My sites have been receiving a little more traffic these days (but not too much) and it seems my vps is slowing and at times vbulletin/wordpress page doesn't loads or loads a bit sluggishly (refreshing the page gets rids of not loading issue but not sluggishness).
So I logged into Virtozzo and saw the following QOS alerts:
Jul 05, 2008 11:38:25 AM Green zoneGreen zone kmemsize
Jul 05, 2008 11:38:25 AM Green zoneGreen zone tcpsndbuf
Jul 05, 2008 11:34:54 AM Green zoneGreen zone privvmpages
Jul 05, 2008 11:33:54 AM Yellow zoneYellow zone privvmpages
Jul 05, 2008 11:33:15 AM Black zoneBlack zone kmemsize
Jul 05, 2008 11:33:15 AM Black zoneBlack zone tcpsndbuf
Jul 05, 2008 11:28:05 AM Black zoneBlack zone kmemsize
Jul 05, 2008 11:28:05 AM Black zoneBlack zone tcpsndbuf
Jul 05, 2008 11:27:55 AM Red zoneRed zone tcpsndbuf
Jul 05, 2008 11:22:55 AM Black zoneBlack zone kmemsize
Jul 05, 2008 11:22:54 AM Black zoneBlack zone tcpsndbuf
Jul 05, 2008 11:17:54 AM Black zoneBlack zone kmemsize
Jul 05, 2008 11:17:45 AM Black zoneBlack zone tcpsndbuf
Jul 03, 2008 05:31:29 PM Green zoneGreen zone othersockbuf
Jul 03, 2008 05:26:19 PM Black zoneBlack zone othersockbuf
I have previously seen tcpsndbuf going into yellow and even black zone (but only once in a blue moon) however never saw kemsize going into black zone.
These are the limits my host has set:
IDCurrent UseSoft LimitHard LimitUnits
tcpsndbuf301,8602,580,4804,055,040bytes
kmemsize9,135,28929,614,08030,474,240bytes
othersockbuf17,8881,689,1203,145,728bytes
My Cpanel VPS has around 384MB of dedicated ram and around 896Mb of burst Ram. At any given time, there is at least 150Mb of free dedicated RAM. So based on this, are these values correct or they need to be changed or do I need to look for something else which might be causing this problem?
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?
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
I'm currently on a VPS 2.0 Pro package from WebFusion. Ubuntu.
I've been with them for years, first on shared, now VPS. I generally run Invision discussion forums on them, as well as a few static websites.
Ok for disk space, memory etc. but recently it has been sooooooo slow, lag is getting unacceptable. It is intermittently ok, then slow as treacle. My customers are starting to complain.
I've spoken to tech support, and all they say is it's fine, but will look into it and then contact data centre.
To be honest, over the last few years I've seen a decline in tech support and customer service, but wondering what to do now. I pay annually and my budget is about £400 pa.
Renewal is due about March, but thinking about leaving early. Just getting too much hassle.
I just wonder who to go with? Do the smaller companies offer the same performance? Do they all have the same connnections to the backbone?
I have a website that I recently moved to a dedicated server. Before hand I had the website hosted with 2 other hosting companies (not dedicated).
I decided to go to a dedicated server because the website ran extremely slow or even went down due to traffic.
With the dedicated server I am having the same problem with the same amount of visitors online. This usually occurs with aprox 250 members online.
I know nothing about servers and have no idea how to cure this problem or if possibly it could be a setting in the server. However this is killing my website because new people are unable to register because of site coming down from traffic.
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
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.
I am migrating my sites from a Xen based Centos 5.3 + cPanel/WHM instante to another Xen based cPanel/WHM solution with Centos 5.3 64-bit. I am having issues with easyApache now after it was successfully ran for the first time.
It does not time out however even the profile selection screen takes well over 10 minutes to get to once easyApache is initiated. Once the profile selection is made it is still slow moving to the customization screen.
The server is neither overloaded, nor out of memory. I have actually executed /scripts/checkperlscripts in hopes that it would identify something. I am planning to remove /home/cpeasyapache folder however I am not confident whether this is the right approach or not.
Today, without any change on the server side my single running website on my server started running low. After checking the running processes I realised I have these 8 processes running with high cpu load something that didn't had before.
4245 user 20 0 283m 103m 10m R 85.1 0.3 6:44.88 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini 4243 user 20 0 241m 68m 8736 R 83.8 0.2 6:33.45 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini 4259 user 20 0 254m 82m 8720 R 83.5 0.3 6:11.00 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini 4244 user 20 0 282m 103m 10m R 82.1 0.3 6:46.49 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini 4247 user 20 0 248m 76m 8712 R 78.8 0.2 6:50.31 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini 4264 user 20 0 258m 85m 8712 R 72.9 0.3 6:49.83 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini
apache error log doesn't show any warnings, errors.
I'm having the oddest issue. For some reason, some of the websites on my server load fine, and some take a really long time to load (2 minutes).
Now, the server load is fine, and the size of the sites aren't the issue either. I've restarted Apache and a couple more services, and still the same sites seem to load very slow.
What could be causing this since it's only effecting certain websites?
We have about 100 servers using CSF, and CSF is generating A LOT of mail alerts.. which is causing us to receive over 1000 mails daily, just from CSF alerts.. this doesn't include support emails or others.
My question..
How do you handle mail alerts when you have lot of servers? See... i can not waste 5 hours reading every mail.. even if I start deleting those mails a lot of important and critical alerts can be erased in the process..
I have started having daily numproc black alerts on my VPS. Tech Support have increased the numproc limit already to 1500 but say that I will need a dedicated server, that's the last I have heard. I'd like to know if there is anything I can do to limit this numproc problem without the need to get a dedicated server. The numproc alerts seem to be getting more frequent but the visitors to the site are not increasing. Here are the details:
Only one site is hosted on the VPS. Includes phpbb forum & various php / mysql sections like an affiliate store & photo gallery. Averaging about 11000 visitors/day I tried to run /proc/user_beancounters & ps axv commands when the numproc was maxed this morning but could not log in to run it so these are the ones I ran yesterday.
I configured monit to send me email alerts when apache is using too many resources but I cannot receive email alerts. I use Qmail. As for syslog, there is this message:
monit[6473]: Sendmail: error receiving data from the mailserver 'localhost' -- Resource temporarily unavailable
I tried to add for server name the name used in MX record but with the same result. Btw: other things configured in cron (eg. RKHUNTER) send me alerts OK.
can any1 tell me if this is ok for 3 or 4 days i was having Black and yellow zone alerts for NUMFILE on my vps, vps has 256Ram,1024 burst, using centos, virtuozzo and cpanel
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
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?
Being using the free version of siteuptime.com but this month alone i have had so far 3 false alerts reported, i am always in the putty and does not get interrupted, and i am sure i am around on the site too while supposedly siteuptime reports down (i am guessing firewall blocks their server ip for w/e reason). So am wondering is there any really good public tracking site out there which can do public reports more accurately and not kak out on me?
Whats your experience with siteuptime for monitoring if any ? Sometimes it works "ok" other times its just off the charts.
I keep receiving emailed alerts with subject like: "<server name> alarm level changed"
with content like:
Server health parameter "Memory > Real memory usage" changed its status from "green" to "yellow". or Server health parameter "Services > Apache CPU usage" changed its status from "red" to "yellow".
(and then a readout of the top command)
1) Where in Plesk can I see live alerts (or a historical log of these alerts)
2) Where can I change the settings (I think it may be too sensitive and the thresholds need to be adjusted)
3) I don't quite understand the alerts in general either, for example, the "Memory > Real memory usage", the TOP command output is for example:
At 15.00 PM (+1 hours here) my isp rebooted the hardware node. After the reboot there were some issues, they think it is possibly a DDoS Attack. They said the load on the host node was in the hunderds and my VPS was stopped because of the reboot and when I started it, HyperVM first told me it was not possible and after a few tries it started finally.
But the load was very high, and it still is. How can I check what the problem is that creates the high load?
I solve the sshd problem cos I edited the conf file with UseDNS no so it faster right now but I couldnt do anything with mc.
I have to wait about 15 seconds to load it.
Any suggestion?
or any ideal why my server become slower?
System: Debian 4.0 kernel: grsec 2.6.19-1
Till today morning its okey.
Oh, yes, I run tiger and got the following message in log:
09:50> Beginning security report for atdn.us (GNU/Linux Linux 2.6.19.1-grsec). # Performing check of passwd files... # Checking entries from /etc/passwd. --WARN-- [pass014w] Login (firebird) is disabled, but has a valid shell. --WARN-- [pass016w] User oident has / as home directory --WARN-- [pass015w] Login ID sshd does not have a valid shell (/usr/sbin/nologin). --WARN-- [pass015w] Login ID sync does not have a valid shell (/bin/sync). # Performing check of PATH components... --WARN-- [path009w] /etc/csh.login does not setenv an initial setting for PATH. # Only checking user 'root'
I modificated this to the correct one (I mean I try to solve this warnings) but when I noticed that my machine becmome slower, I recover everything.
I have an ASP.Net + SQL Server 2008 Express website I was hosting with DiscountASP.net. Their service seems pretty solid, and I didn't have any issues hosting with them. Customer support was quick and knowledgeable.
However, I had noticed for quite some time that the website seemed pretty slow. Please note that the website isn't live yet, so it was only me and a colleague who were accessing it. I was accessing the website from Dubai, UAE and he from Doha, Qatar. Therefore traffic/load definitely wasn't the problem.
We tried an instance of the website on a VPS (the DB was still running on DASP), and it was blazing fast! The difference in speed was quite significant and sustained. What could the reason for this be? Is it because we can't expect good speeds from shared hosting? Or should I report this issue to DASP?
I would be paying around 5x of what I'm paying right now ($100 instead of $20) if I switched to a VPS, but if there are definite advantages, I would be willing to do so. I don't expect large volumes of traffic on the website for quite a while.
I have a problem with my company's web hosting solution: occasionally we go through periods where we cannot seem to access our webpages very quickly. In different browsers (IE, Firefox) it takes literally minutes to load a single page. Most of the time the pages load very quickly from inside our office or outside.
Our self-hosting configuration is:
Windows XP Pro. w/ SP3 Apache 2.2.11 with PHP5.2.9-2 Norton Internet Security
Our internet connection is 10Mbps down / 900 kbps up cable behind a DLink router with port 80 forwarded over to the web server. Each page of our site is relatively small in size.
The same computer server as a mail server for about 10 email addresses.
When we encounter this problem, restarting the Apache service never seems to help, but restarting the computer does seem to help. XP was put on the computer with the latest updates about 3 weeks ago, so I am not concerned about spyware, particularly since this computer is only used as a server.
Does anyone have any troubleshooting steps to determine what the problem is? We don't have hundreds of visitors at a time in traffic as far as I am aware.
I own the website [url]and it's hosted at Host Excellence. Recently there have been some downtime periods, and most importantly, I have noticed that downloads are very slow. For instance, when I download a file such as [url]I get an approximative transfer rate of 100-150 KB/sec (whereas most other sites download at 500 KB/sec or more). First of all I'd like to know if you guys get similar results, and what do you recommend? I have contacted my host about it, they seem to deny the problem. Should I switch? What to? I need something reliable and fast.
After my bad experiences with the other provider, I decided to go with GeekStorage.com for my hosting needs. I found plenty of positive reviews for them but so far, it doesn't look good :-/
The support was fast enough, but not really helpfull. My basic problems, so far, are:
1. The VPS is _really_ slow. Simple operations like listing (ls) the contents of directories with 4-5 files takes around 1~1.5seconds. Editing /etc/vim/vimrc with vim takes around 3 seconds (to open, I mean).
2. While trying to install phpmyadmin from the default ubuntu repository took me almost 10 minutes, from downloading to installing the packages. Something my old Dual P3 (yes, pentium 3) did in less than 2 minutes. Accessing the phpmyadmin page (with a web browser) took around 3 seconds, and no, I don't mean loading the database scheme and stuff, just the login screen. It just stood there for 3 seconds, then instant load. No, it wasn't a DNS problem. My browser was just hanging at "Waiting..."
3. Bandwidth is _really_ low. Tried downloading different files located all around the world and I never seen more than 300k/s, max. Sometimes it drops to a painfull 150k/s and just stays there.
4. Timeouts. First night they got my VPS up I had small downtime periods. I was trying to edit the DNS files and I had like 20 disconnects in 1 hour. The connection was working for 2 minutes, then *poof* dropped for another 2 minutes.
5. The virtualization. I can't install simple software as pureftpd. All I get is "Jan 4 20:38:21 vps pure-ftpd: (?@?) [ERROR] Unable to switch capabilities : Operation not permitted". Tried different workarounds (trying to avoid recompilation with --without-capabilities) but nothing worked.
As answers, all I got so far is:
- for the connection problem:
"Could you please provide the results of a traceroute when this problem is occurring? We will forward it to the DC and see if they can determine any network issues. Thank you, and apologies for the trouble."
Got the answer 1 hour after I asked them if there's something wrong, but it was too late... the problems were gone, for the moment.
- the slow response from the vps: "2-3 seconds is understandable during peak hours, however we have not seen this issue come up on node3 since the server was rebooted recently. If the issues arise again
please let us know, we will check on the cause." I *almost* understand about the peak hours, but it's not normal. I remember this was an issue with *shared* hosting. This was one of the reasons I got a VPS in the first place. Basically they're telling me that during peak hours my customers will have to wait 3 seconds for my websites to load. You know what the average user does after waiting that many seconds for a page to load? Closes the browser or types another address.
I have the VPS512 plan (the $55 one + $3 safetyweb protection) + extra 50% bandwidth and disk space. My VPS is located on NODE3.
Anyone else experiencing the same issues (maybe on another node?) I'm still hoping for this issues to go away, maybe it's something temporary, but if this happens for the whole week, I'll definatelly ask for money back (they have a 60day return policy).
