Web Hosting :: Server Slow After Using Mail Function

How Much Can Php's Mail Function Really Handle
I have mixed feelings on the mail() function in php. I've seen it send out amazing numbers of emails and yet I keep reading that it is prone to problems. I'm wondering if someone can put an approximation on what you could/would send out in say 60 seconds. I know that there are tonnes of variables, so i'll try and remove a few:

- server hardware is typical of a cpanel/WHM shared hosting environment
- running apache/linux
- email is say 20kb HTML format
- mail is sent in a php script loop, one by one; alternatively, mail() could be called in clusters of x emails - like send 5 emails at once
- there are 400 recipients

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PHP Mail() Function Stopped Working
I have a dedicated that suddenly stop php mail() function to work.

Very strange because if I run php script with mail() function as root on command line all working fine.

But If I run php script with mail() function in my browser so not work. Seems that only ROOT can run mail() function.

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PHP Mail() Function Not Working With Lighttpd
I recently started using lighttpd + with PHP using Fast-CGI on a server hosting 14 blogs powered by WordPress, the server works great and this change reduced server load in about 50% which is nice for us, considering some of our blogs have a very high visitor traffic.

Our only problem so far is that since we switched to lighttpd the PHP's mail() function is just not working. I have compiled and re-compiled PHP and Lighttpd without any effects. I have a test site still working with Apache and PHP scripts can send mail without problems.

I've searched forums and Google for some kind of answer but none whatsoever maybe someone can give me pointers on how to solve this. Thanks a lot!!

Server details:

Lighttpd version: 1.4.15
PHP version: 4.4.4
Kernel: 2.6.9-42.0.3.ELsmp
Server has cPanel/WHM installed

PHP configure options:

--prefix=/usr/local --with-xml --enable-bcmath --enable-calendar --with-curl --enable-exif --enable-ftp --with-gd --with-jpeg-dir=/usr/local --with-png-dir=/usr --with-xpm-dir=/usr/X11R6 --with-gettext --with-imap=/usr/local/imap-2004g --enable-mbstring --enable-mbstr-enc-trans --enable-mbregex --with-mcrypt --enable-magic-quotes --with-mysqli --with-mysql=/usr --with-openssl --enable-discard-path --with-pear --enable-sockets --enable-track-vars --with-ttf --with-freetype-dir=/usr --enable-gd-native-ttf --with-xmlrpc --with-zlib --with-kerberos --with-imap-ssl --enable-fastcgi --enable-force-redirect

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Configure Webserver So That The Php Scripts To Be Able To Use The Mail() Function
I just purchased a vps from rapidswitch, installed lamp, webmin, etc. All is working fine, with one exception. I can't send mail via mail() function.

I have set the MX so that my email addresses are handled by google for domains so i can send and receive mails without problems.

What i cant do, is for example to install a cms and make it send emails for the new registered users, etc.

I have installed postfix via yum, and i've tried to configure it.. but i kind of give up after a few hours of trying.

Someone could point me to the right direction on how to configure postfix for just this ? to be able to send mails via php.

I don't care if it's postfix, qmail, etc.

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Email Function Not Working (MS Window Server 2003)
We have a MS Window server 2003 with SP2, currently there is a website running, the webiste is desgined by using asp.net 2.0 c#.

We reinstalled the window server 2003 last week, and we found the email functions not working any more(users in the website can't receive email each other).

I have spent days and trying to figure out, but no luck, I have tried to reset the IIS settings, SMTP Virtual settings, and add/remove windows componets settings...

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Exim Mail Server :: Your Outgoing SMTP E-mail Server Has Reported An Internal Error ...
I getting this error when our clients are sending mail from outlook but they are able to send mail from webmail.

we are using exim mail server and whm . i can't understand where is problem , anybody can help me ?

Sending' reported error (0x800CCC6A) : 'Your
outgoing (SMTP) e-mail server has reported an internal error. If you
continue to receive this message, contact your server administrator or
Internet service provider (ISP). The server responded: 451 Please try again
later.

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Smarter Mail - Spammers Targetting Mail Server Using Dynamic Ip's
We have been having some problems with one of our mail servers lately. Server is running Smarter Mail 4.x with declude.

Some spammers have been targeting this particular to send spam through this server. This putting lot of load on the server because declude is processing the SPOOL in Smarter Mail and spool goes upto 2000-20000 during the day. We have been checking the headers and blocking the IP's continuously of these spam but these people are using dynamic ip's. And it doesn't seem like single spammer. Content is quite different.

Blocking full ranges of certain IP Range helps though but then lot of legitimate mail is getting blocked as well.

Is there any good suggestion or a serious mail server admin who can have a look and actually sort it.

This is causing serious delays on our mail delivery through this mail server.

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Mail Server - Setup Virtual Mail Boxes
AMD Athlon54 X2 512Kx2 socket AM2 3800
slamd64-11.0

Just completed installing the captioned OS with everything installed except GAME. This is an experiment. slamd64 is now running on the box.

I'm going to setup virtual mail boxes on this server, allowing my friends using the mail server sending and receiving mails. Please advise;

1) how to check whether sendmail is running and configured properly.
2) how to setup virtual mail boxes. Where can I find relevant tutorial.

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Separate Mail Server- Deliver Mail To Hotmail
i'm thinking about building a separate mail server away from my cpanel/whm machine. that mail server will be located on a different IP address with "clean" record so that business email won't get deleted my strict rules of hotmail.

can you please tell me, generally, about this "buidling separate mail server", i.e. what MTA, software, web-mail software, will it be worth? ,etc. Pointing me in the right direction will allow me to complete the project in the shortest time.

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VPS Incredibly Slow, Huge Numbers Of Slow MySQL Queries For Plesk/Watchdog
I've got 25 domains on a Virtuozzo/Plesk8.6/CentOS5 VPS. Each domain has one up-to-date install of WordPress, most have very little traffic (average 200mb per month), maybe 2 domains get 5-7gb traffic per month.

I monitor port 80 connections and rarely see more than 10 at a time.
That should in my opinion be no problem at all for a VPS with 768mb guaranteed ram and 2.4ghz cpu. I've got 30gb hard drive spare too.

But.... about 8 or 10 times a day it grinds to a complete halt: server load at 500-1000%, sites timing out, plesk takes 3mins to load, often I can't even connect with SSH, and the plesk web server, apache

INSERT INTO module_watchdog_sys_stat (time, type, value, service_id) VALUES(FROM_UNIXTIME(1226404705), 'MAINMEM_USAGE', 17472, 11);

80 seconds sounds like a huge amount of time for a MySQL insert to me! Does anyone know if this is likely to be the cause of my trouble? Some problem with Plesk and the database? Or could it be something else?

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Mail Server / Can't Send Or Receive Mail
In webmail, when a person trys to send an email they get this error:

Message not sent. Server replied: Requested action aborted: error in processing
451 Temporary local problem - please try later

We have tried all the mail processing apps on Webmail (horde/squirrel/roundcube) and all of them seem to do the same thing. We have restart exim and that doesn't do anything either.

I tried searching Google, but I didn't find too much luck there.

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Server Too Slow
this is my server and i host only one site as upload image but it is too slow and usully apache down

how i can optimize this server please
Processor Information

Processor #1 Vendor: GenuineIntel
Processor #1 Name: Intel(R) Pentium(R) 4 CPU 2.26GHz
Processor #1 speed: 2262.422 MHz
Processor #1 cache size: 512 KB

Memory Information

Memory: 1002104k/1015744k available (2150k kernel code, 12844k reserved, 716k data, 164k init, 98240k highmem)

System Information

Linux 2.6.9-42.0.3.EL #1 Fri Oct 6 05:59:54 CDT 2006 i686 i686 i386 GNU/Linux

Physcial Disks

Current Memory Usage

total used free shared buffers cached
Mem: 1003164 976220 26944 0 102932 471740
-/+ buffers/cache: 401548 601616
Swap: 1052216 171412 880804
Total: 2055380 1147632 907748

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Slow Server ...
frends now iam haveing dedicated server with pentium-4 and RAM is 2GB,my site online members is more than 100 members,now i feel slow in server,what i have add extra RAM or any chage in server

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Server Is Slow
Why is my hosting server usually slow and down?
CPU Usage : 100%
Main : >3GB (total physical memory: 3GB)

i dont know Do user access to website that are hosted on my server too crowded make server slow while bandwidth only have 4MB.

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Slow Server
Server is dead slow. Its 3.0 1GB Ram Plesk Lniux Red Hat E4 machine. The top -c result is as below.

197 total, 6 running, 191 sleeping, 0 stopped, 0 zombie
Cpu(s): 4.0% us, 1.7% sy, 0.3% ni, 0.0% id, 94.0% wa, 0.0% hi, 0.0% si
Mem: 1027556k total, 953880k used, 73676k free, 23604k buffers
Swap: 2040244k total, 102308k used, 1937936k free, 87872k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3167 mysql 15 0 288m 67m 4336 S 0.8 6.8 40:37.97 /usr/libexec/mysqld --defaults-file=/etc/my.cnf --basedir=/usr --
3247 apache 18 0 125m 75m 4344 D 0.7 7.5 0:00.34 /usr/sbin/httpd
3039 root 26 10 13628 5808 2656 S 0.3 0.6 0:00.69 mytop
3250 apache 16 0 121m 71m 4520 R 0.3 7.1 0:00.35 /usr/sbin/httpd
4671 apache 15 0 141m 89m 6512 S 0.2 9.0 0:57.54 /usr/sbin/httpd
1882 popuser 15 0 4176 700 564 S 0.2 0.1 0:00.17 /usr/bin/pop3d Maildir
2111 popuser 15 0 4036 712 564 S 0.2 0.1 0:00.47 /usr/bin/pop3d Maildir
3327 apache 17 0 124m 73m 5556 R 0.2 7.3 0:00.50 /usr/sbin/httpd
1 root 16 0 3580 484 456 S 0.0 0.0 0:02.11 init [3]
2 root 34 19 0 0 0 S 0.0 0.0 0:14.01 [ksoftirqd/0]
3 root 5 -10 0 0 0 S 0.0 0.0 0:00.56 [events/0]
4 root 9 -10 0 0 0 S 0.0 0.0 0:00.00 [khelper]
5 root 15 -10 0 0 0 S 0.0 0.0 0:00.00 [kacpid]
19 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 [kblockd/0]
40 root 10 -10 0 0 0 S 0.0 0.0 0:00.00 [aio/0]
20 root 15 0 0 0 0 S 0.0 0.0 0:00.00 [khubd]
39 root 15 0 0 0 0 S 0.0 0.0 4:09.01 [kswapd0]
186 root 25 0 0 0 0 S 0.0 0.0 0:00.00 [kseriod]
295 root 15 0 0 0 0 D 0.0 0.0 2:29.80 [kjournald]
1373 root 6 -10 2272 376 372 S 0.0 0.0 0:00.02 udevd
1606 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 [kauditd]
1648 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 [kmirrord]
1672 root 15 0 0 0 0 S 0.0 0.0 0:00.00 [kjournald]
1673 root 19 0 0 0 0 S 0.0 0.0 0:00.00 [kjournald]
2443 root 15 0 1608 528 456 D 0.0 0.1 2:14.13 syslogd -m 0
2447 root 16 0 2696 368 316 S 0.0 0.0 0:00.00 klogd -x
2474 rpc 15 0 3304 404 400 S 0.0 0.0 0:00.00 portmap
2493 rpcuser 18 0 2648 528 524 S 0.0 0.1 0:00.00 rpc.statd
2519 root 16 0 4672 188 152 S 0.0 0.0 0:00.10 rpc.idmapd
2590 root 15 0 1952 436 284 S 0.0 0.0 0:00.07 /usr/sbin/smartd
2599 root 19 0 1940 356 352 S 0.0 0.0 0:00.00 /usr/sbin/acpid
2659 named 16 0 43736 7664 1884 S 0.0 0.7 12:22.15 /usr/sbin/named -u named -c /etc/named.conf -u named -t /var/name
2702 root 16 0 4956 912 792 S 0.0 0.1 0:03.86 /usr/sbin/sshd
2715 root 16 0 3104 712 620 S 0.0 0.1 1:02.87 xinetd -stayalive -pidfile /var/run/xinetd.pid
2869 postgres 16 0 19772 1440 1332 S 0.0 0.1 0:00.08 /usr/bin/postmaster -p 5432 -D /var/lib/pgsql/data
2873 postgres 18 0 10572 216 176 S 0.0 0.0 0:00.00 postgres: stats buffer

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Server Is So Slow
My server is so slow I don’t know where the problem is

Server Load from 2 to 8 Monthly bandwidth 1300 GB Unique visitor 4000 - 5000 daily Page loads 13.000 – 20.000

This is current server features
Intel Pentium 4 2.8Ghz 1024MB RAM Bandwidth: 1500GB

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Slow Server-to-server FTP'ing On Windows
I have a number of dedicated servers at different hosting companies, all with 100mbps burstable ports, using several versions of Windows (2003 or 2008, Standard or Enterprise).

I've tried setting up FTP servers (the one that is part of IIS) on 4 of them, to transfer files between the servers. But, I can't get a single transfer to go faster than about 10-12Mbps. If I upload multiple files, each will go at right around 10-12Mbps (so I can get, say, ~50Mbps if transferring 5 files simultaneously). I've tried passive FTP, and I've tried tweaking the TCP settings (TcpWindowSize, GlobalTcpWindowSize, Tcp1323Opts), and the results are the same.

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Server Slow To Load
I dont know much about what could be cuasing this so i come to you for advice, i am currently at wired tree on their VPS384 package with 348MB of ram and my site is really slow to load [url]sometimes it is so embaressing to show people i just dont bother, i am sure this is deferring visitors from my content how can i speed this up?

I can add more ram but it will push the price and if the price goes too high i might aswell move to a Hybrid with wiredtree.

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Server Network Very Slow
problem with my server running CentOS 5.3.

I noticed that there are huge pings to my server from time to time, example:

------------------
64 bytes from HOSTNAME (server-IP): icmp_seq=0 ttl=60 time=2.93 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=1 ttl=60 time=2.70 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=2 ttl=60 time=1901 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=3 ttl=60 time=899 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=5 ttl=60 time=2.69 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=6 ttl=60 time=2.62 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=4 ttl=60 time=2132 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=8 ttl=60 time=2.57 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=7 ttl=60 time=1190 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=10 ttl=60 time=2.65 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=9 ttl=60 time=1048 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=12 ttl=60 time=2.74 ms
64 bytes from HOSTNAME (server-IP): icmp_seq=11 ttl=60 time=1205 ms
------------------

First I thought that it is network related, but most strange for me was that I did not have any packets lose.

Then I tried to ping from my server to other hosts - situation was the same - some ping were good and some were huge (700ms, 800ms, even 2000ms)

I checked:
cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max
and it was 65536

Then I checked:
cat /proc/sys/net/ipv4/netfilter/ip_conntrack_count
and it was ~1600 so normal.

dmesg was showing such errors:

conntrack_ftp: partial 227 3331059707+13

Then I checked ifconfig, here is the output:

------------------
eth0 Link encap:Ethernet HWaddr 00:24:21:57:2B:6F
inet addr:MAIN=IP Bcast:BCAST=IP Mask:255.255.255.192
inet6 addr: fe80::224:21ff:fe57:2b6f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:170557113 errors:0 dropped:2421127049 overruns:0 frame:0
TX packets:182047660 errors:0 dropped:46 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2756835074 (2.5 GiB) TX bytes:79640621 (75.9 MiB)
Interrupt:82 Base address:0xe000
------------------

Strange for me was:

RX packets [...] dropped:2421127049
TX packets [...] dropped:46

I did not have such dropped information on all my other servers. Dropped counter for RX was constatnly increasing.

So I decided to restart all services on the server. After restarting network and ipaliases - problem disappeared. RX dropped counter is still rising, but I do not have any slowdowns on the server and pings are normal.

My question is - does anyone could have any idea what can casue my problem and how can I prevent this in the future?

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Server Running Very Slow
i have a strange problem at my server ,

i hosted 1 wesite ( forum script with no plugins )

when my traffic consuption reache to 25mbs the server running very slow for hours although the load avarage is very normal 1-2 Iowait 3% ram consumption 8-10Gb

my uplink port 1Gb and of course my DC said the connection is normal with no limitation

the server specs are good
Quad procs 7200 ,16Gb ram ,15K SCSI speed

connections reache to 2000-2500 per seconds

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Server Is Responding Slow
Server is responding slow!

My server is responding slow

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Server Running Slow
i have installed redhat Cent O.S 4.2 on my sever.

while client is accesing its homepage , it has a slow response.

when client use ftp for file transfer, response from server is slow.

i am running php software and MYSQL database in my server.

i am using 80GB hard disk and still 28GB freespace is remaining.

i have 512 MB of memory, in which currently 91 MB is still free.

o/p for " vmstat" command is

procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 160 91296 40656 287300 0 0 9 7 60 34 0 0 100 0

o/p for "free" command is

total used free shared buffers cached
Mem: 507932 416572 91360 0 40636 287284
-/+ buffers/cache: 88652 419280
Swap: 779144 160 778984

o/p of "top" command is

top - 14:31:52 up 2 days, 1:12, 2 users, load average: 0.00, 0.00, 0.00
Tasks: 74 total, 1 running, 73 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.7% us, 0.0% sy, 0.0% ni, 98.3% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 507932k total, 416772k used, 91160k free, 40612k buffers
Swap: 779144k total, 160k used, 778984k free, 287268k cached

In the /var/log/messages there are no errors

But in the /var/log/httpd/error_log it is showing a long list of same error i.e" an unknown filter was not added :PHp".in this way my server is responding very slow for ftp and while accesssing through http.will u pls help me to solve this problem.

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Midphase Server Frustratingly Slow
I'm based in the UK and recently I purchased a midphase ns01 dedicated server.

All was going well until I decided to test out downloading a file from the server. The transfer rate on the download was and still continues to be terrible. (I did a traceroute and ping on the server as shown below.)

My ISP is AOL with a connection speed of 100 mbps.

Heres the traceroute and ping of my midphase server...

Midphase traceroute
Tracing route to ---.com [000.00.000.000]
over a maximum of 30 hops:

1 * * * Request timed out.
2 40 ms 38 ms 38 ms host-000.00.000.000.as43234.net [000.00.000.000]
3 44 ms 42 ms 40 ms 000.00.000.000
4 42 ms 41 ms 41 ms xe-10-3-0-scr001.log.as13285.net [78.144.2.135]
5 41 ms * 51 ms Opal-ge-2.2.0.mpr1.lhr2.above.net [213.161.78.209]
6 115 ms * 109 ms so-0-1-0.mpr1.dca2.us.above.net [64.125.27.57]
7 113 ms 111 ms 113 ms xe-1-1-0.er1.iad10.above.net [64.125.26.238]
8 202 ms 110 ms 110 ms dcp-brdr-03.inet.qwest.net [63.146.26.61]
9 190 ms 191 ms 192 ms tuk-core-01.inet.qwest.net [67.14.4.106]
10 190 ms 190 ms 191 ms tuk-edge-09.inet.qwest.net [205.171.11.70]
11 197 ms 194 ms 195 ms te2-1.cer02.sea01.seattle-datacenter.com [65.112.24.22]
12 195 ms 197 ms 195 ms po02.fcr01.sea01.seattle-datacenter.com [67.228.118.138]
13 * 239 ms 240 ms 000.00.000.000-static.reverse.softlayer.com [000.00.000.000]

Trace complete.

Midphase Ping
Pinging -------.com [000.00.000.000] with 32 bytes of data:

Reply from 000.00.000.000: bytes=32 time=199ms TTL=51
Reply from 000.00.000.000: bytes=32 time=195ms TTL=51
Reply from 000.00.000.000: bytes=32 time=192ms TTL=51
Reply from 000.00.000.000: bytes=32 time=189ms TTL=51

Ping statistics for 000.00.000.000:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 189ms, Maximum = 199ms, Average = 193ms

========================================================

I was just wondering if anyone based within the uk was experiencing similar problems with midphase or perhaps has some suggestions as to how I can remedy this problem?

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Slow Response Time From Server ...
I have a dedicated server that I am renting that appears to randomly respond very slowly for some reason (pings are between 90-4000ms with about 75% packet loss).

This has been happening lately (about once a week for the past 4 weeks) and I thought I had originally found the cause of the problem but it appears I haven't.

Originally, when this problem was happening we were getting an abnormally high about of traffic but a reboot always fixed the issue. I've checked every where I can think of but I cannot find anything out of the ordinary.

ight now we're averaging less than 2Mbps in traffic, the CPU load is less than 0.75, the memory usage is at 55% with no swap being used, Apache connections are normal, no active SSH, FTP, or mail connections, I've restarted all services which had no impact, I've checked the access and error logs but can't see anything out of the ordinary.

I have a ticket open with the data center but I'm trying to figure this out on my own to fix whatever is causing this so I can move my data over to a new server we just got setup over the weekend in a local data center.

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Server A Little Slow, Site Or My Connection?
I rented a server from VD a month ago and hosted some of my websites. But I'm constantly noticing that my websites are loading very slow. How can I check if other users are experiencing the same problem, or if the problem lies with my Internet connection?

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Server Going Slow For No Apparent Reason
I have a dual processor, dual core server with 12GB memory.. It uses less than 4% CPU utilization and less than 5% memory utilization, but for some reason It's really slow to load sites...

I know this isn't much information, but would any have any ideas as to what could cause the slow speed?

If is anyone is available to look at it, I'll pay you (obviously).

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Dedicated Server A Bit Slow
My dedicated server starts to be a bit too slow.

But on Munin it seems just fine.

what can i do to solve this problem ?

This is the link to munin :
[url]

and this is what i have :

Quote:

Tier 1 Bandwidth: 2000GB
Operating System **Select One**: Ubuntu Server Edition (6.0x)
Memory: 6144MB RAM
Uplink Port Speed - Disc: 100mbps
Processor: Dual Processor Dual Core Xeon 5160 3.0GHz Woodcrest 2 x 4MB cache

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How To Prove Your Web Server Is Too Slow
How can I prove to my web hosting company that the server is extremely slow and overloaded?

If I call support, they are saying that it is fine for them. But I've checked with different internet connections and it's slow.

I want to be moved to another server or get a partial refund or something. At this point my website is unusable during peak business hours.... and I get barley any traffic.

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Mysql Server Busy And Slow
Mysql server always busy and slow (in my VPS).

How I can know which website/account uses mysql very heavely?

or just any monitoring Idea?

I want to know which user is responsible of that overuse?

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Slow Server Response Time ....
I recently made a shift to FDC for one of my servers that I use for downloadable content.

I went for a $199 server with a 100mbps shared bandwidth port. Now, the only problem I seem to be having with it is that downloads appear to be, I would say recognized, very slowly by the server before they start, however, once the download starts I get a full speed. This usually happens during peak times.

I'm using about 10/15mbps on the server according to my cPanel statistics. I just wanted to ask here prior to contacting FDC on this, whether this slow server response time has something to do with the bandwidth port, or perhaps the server's RAM, CPU, etc? Given I'm using quite minimal bandwidth on the port, should I consider having them fix this or upgrade the server instead?

And if I had to upgrade, would I need to upgrade the port or the RAM, or both for this?

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My Server Works Slow But It's Ok Of Memory
My server is hosted within a Virtuozzo VPS Server, and it runs very slow. Sometimes, when I type commands via shell, it takes 1-2 seconds to be echoed.

I've just checked free memory ('free -m') and it seems to be ok:

Code:
free -m
total used free shared buffers cached
Mem: 8104 7642 461 0 220 3979
-/+ buffers/cache: 3443 4661
Swap: 4094 0 4094
If I check "ps -ef" I don't see any weird process and with "top" the most memory-wasting process is 'mysqld' (0.8%).

Which extra parameters might I check?

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Slow Server - DoS Attack
My server (Xeon 3.0Ghz) went down for no reason yesterday and ever since it was rebooted (and I've rebooted a couple of times since then), pages load extremely slowly or just timeout. Server load is constantly hovering around 1 and top stats indicate that the server's resources are not under heavy load, which is contrary to the usual pattern during peak times.

I've checked netstat and I notice a lot of SYN_RECV. Could this be a DoS attack? If so, what steps do I take to stop it?

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Slow Virtual Private Server (VPS)
The subject line pretty much sums up my major problem. My site has been intermittently slow (somtimes slow, sometimes not) for... like since I can remember. So my site isn't that big

Sometimes for me it takes forever to load a vbulletin page, or even the main page of the site. I thought I had found the problem (a mysql-intensive script), removed it, improved things quite a bit, but there is still a long way to go!

Many site users report the same exact things.
"The site is sloowww" ...
"It wasn't slow yesterday but it is today" ...
"Today it's really fast, but last week I was having problems pulling up pages".

Its fustrating becase this is a VPS, and although I know how to use Cpanel, WHM is really big and I am not sure what I could do to speed up my website or to even begin to locate any potential problems.

My site is basically Joomla CMS, vBulletin BBS and 4images image gallery. The later two use a common user database. My current mysql usage is 327.55MB in total. Apache 1.3.34, PHP 4.4.1 and MySQL 4.1.19-standard. Powered by WHM/Cpanel & Virtuozzo.

What should I do? Where can I start? Where can I look?

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High Server Load And Slow Performance
I am currently hosting my website on one server with the specs:

2.8ghz Dual Quad-Core processor + 8 gigs of ram + two 500 hard drives with a 50 mbps unmetered bandwidth package.

My current problem lies in high server loads and very slow server performance throughout the day.

I am considering migrating over to The Planet onto server with the specs:

3.0ghz Dual Quad-Core + 18 gigs of ram + two 50gb hard drives with 2TB of monthly bandwidth transfer.

In an attempt to have great bandwidth pricing and server performance, I plan on downgrading my current server with my current host to a lowe-end server and keeping it only to host my VIDEO and MUSIC files with the 50mbps unmetered package. The Planet will then host my database and all other web related files on their new server.

Is this a good idea as an attempt to save money in bandwidth costs and eliminating my server lag issues?

I was offered a setup of a separate web and database server at my current host but from what I have read, no one touches the performance and reliability The Planet has to offer.

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Server Network Speed Gets Very Slow Then Unconnectable
I have a server with a overheating problem and a network problem.

(With a lot of users connecting to it every second)

Well, recently the server started to get slow then finally it was up on KVM but network connections do not work.

After reboot, it works for around 10+ hours but it won't last for a day as it gets slower then unconnectable.

When I look at the logs, I see this:

Mar 5 00:38:35 cn1 kernel: printk: 769 messages suppressed.
Mar 5 00:38:36 cn1 kernel: dst cache overflow
Mar 5 00:38:39 cn1 kernel: CPU0: Temperature above threshold
Mar 5 00:38:39 cn1 kernel: CPU1: Temperature above threshold
Mar 5 00:38:39 cn1 kernel: CPU1: Running in modulated clock mode
Mar 5 00:38:39 cn1 kernel: CPU0: Running in modulated clock mode
Mar 5 00:38:41 cn1 kernel: printk: 709 messages suppressed....

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Godaddy Linux Server Response Very Slow
Godaddy linux server respons very slow

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Can Uptime Monitoring Services, Slow A Server?
Does websites uptime monotoring tools and services like for example: pindom, siteuptime or host-tracker can in any way affect the server or vps performance of the website being monitor.

I think that a Monitor service that do a test every 30 minutes dont cause any inpact, but if the interval on check test is every 1 minute.

Can this every minute check affect in any way the performance of a server or vps?

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Moved In Some Sites, Now The Server Is Running Slow
If you check out [url], you can see that its not running super fast. The load is nothing, iostat, vmstat, etc don't show anything out of the ordinary. Is there anything else I can do to see what might be causing it? Am I just in need of some good mysql optimization?

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My Server Has A Low Load, And Still Runs Slow.
My server has a small load (about 30% of it is being used) and it is still running very slow. When I reboot it runs fast for about 5-10 min, and then it is back to slow. I reported this to hivelocity and the responded with
"
The problem was one of your apache process was pegged out. Restarting apache resolved this issue. If you still have issues check top and run lsof on the process ID that is pegged out."

and after it continued
"It will continur to happen until you isolate the source of the issue and stop it.

The load looked fine just now, so I am not seeing an issue.

What you can do is when it pegs out (simply restarting webserver will get it back up but not resolve) run the following command:

ps -aux

Look through the processes to see what is calling it."

Whn I run ps -aux i see a username on my server. i suspended that username but the problem is still happening.

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Server Load Is Low But Site Is VERY Slow
My machine is pretty good. Here are the specs:

Intel Xeon-Woodcrest 5148-DualCore
3 gigs of ram
250GB Western Digital WD Cavia

I run a forum with a modest amount of traffic along with a content management system handling the other sections of the website. I'm pretty sure the forum isn't the problem though.

The server load for this machine is almost never above a 1. Right now as I type this the load is at 0.17, but it's unbearably slow! Taking up to 16 seconds to load a single page.

What could be causing this? I'm a server n00b. Is there a setting I should be doing to one of my servers configuration files to make it run faster?

My website gets 30-40,000 visitors a day and these problems always occur during peak hours. It would be easier to deal with this though if not for the fact that the server load is always so low. How is it possible for the site to get so slow while the server load is always so low?

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Putty SSH Slow Open A Connection FROM ANOTHER SERVER
I am using Putty to connect to my server via ssh.

When opening a direct connection, i can login quickly without any problem

Quote:

login as: gracie
gracie@server1's password:
Last login: Thu May 7 07:31:26 2009 from 192.168.0.5
gracie@server1 [~]# sudo su -
Password:
root@server1 [~]#

When I open a connection FROM ANOTHER SERVER, I have to wait more than 20 seconds

Quote:

login as: tech2
tech2@server2's password:
Last login: Thu May 7 07:32:07 2009 from 192.168.0.5
tech2@server2 [~]# ssh gracie@192.168.0.222
Password:

After I enter the password, I waited 20 seconds before I am logged in.

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1paket.com Server. Slow For Anyone? Need Support To Answer My Tix.
Im having problems contacting 1paket.com support. The site is mighty slow and unreachable at times.

I have sent two requests and got no reply. is there phone number for 1paket support?

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CPU Load Low, Server Slow, Need More Ram
My server gets 300 - 600 concurrent connections to http port 80, has a CPU load of 1 - 2%, has practically all RAM of 1 GB used, is running apache 2 and centos 5.

It tends to get slow and when I ban IPs that use many connections to my server (raping it), it becomes fast again. But soon after that new ******* users come which I again ban and the process repeats itself

I'm starting to think that maybe I just don't have enough RAM to handle them because it seems at least some of those users are legit. I don't however have even that much content that needs to be cached so I'm not sure what good RAM would do but perhaps apache just needs more.

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Low Server Load But Websites Loading Slow
server load is low according to top command / mytop but what I dont understand all websites on the server are loading very slow.

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SLOW Connection: 2 Webservers Using A Single Database Server
I am developing an application on a load balanced network.

It is configured as follows:

Webserver1, Webserver 2 (Fedora 5 - Linux, Apache, Zend Opt, PHP)

and a DataBase Server (MySQL)

When the webserver attempt to use the Database server the connections and page output are REALLY slow!

The database server is within the webservers local intranet - so I thought it would be a lot faster.

----------

Here is a quick test: : :

Testing Database Connection on localhost
Connecting to Database... 0.00054502487182617 seconds
SELECT * FROM users... 0.00076389312744141 seconds

Testing Database Connection on '192.168.1.200'
Connecting to Database... 19.998768091202 seconds
SELECT * FROM users... 0.0021719932556152 seconds

20 seconds to connect to the database server...

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Server Very Slow, But Server Load Is Near Zero
I'm having trouble with a new server. It's a dedicated (Q6600 + 8 gig RAM + 4 x 250gig in Raid 10 + Centos 5.3 64bit + Cpanel).

The machine is way overpowered for the traffic going to the site.

The server load is rarely above .10 and often closer to zero.

I'm getting periodic extreme slow downs. Web pages will take 30-60 seconds to load (or longer). SSH will timeout, or if I can connect, it will take seconds (sometimes 10-15 seconds) for key press to register in the SSH terminal. Pop3 times out, etc.

This might last for 15 minutes or 3-4 hours. Then, everything will start running like a champ again. Traceroutes to the server during the slow downs haven't shown a problem between the server and where I am testing from (have connected from multiple proxies and remote sites to eliminate my local internet connection).

I'm looking for any advice on how to trouble shoot this. Hardware? Software? Configuration issue?

It is definitely not a capacity/load issue. There have been no spikes in web traffic. The opposite, this is a very slow time for my site, which is why I moved to a new server in May.

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