I have a home CentOS server and here is my issue
When I try to connect to it via SSH its laggy and often times out. I also notice packet loss.
My home network is 100 Mbps and the router is a crappy netgear WPN824 V3
I am facing high ping and packet loss issues with a server hosted at hetzner.de (CentOS + WHM)
For some unknown reason pings go high and stay like this (average 1500ms) until I reboot the server.
Here is a screenshot of tracert from server to me: [url]
root@server [~]# tail -f /var/log/messages
Jun 10 14:14:49 server kernel: printk: 56 messages suppressed.
Jun 10 14:14:49 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:14:54 server kernel: printk: 59 messages suppressed.
Jun 10 14:14:54 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:14:59 server kernel: printk: 85 messages suppressed.
Jun 10 14:14:59 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:04 server kernel: printk: 90 messages suppressed.
Jun 10 14:15:04 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:09 server kernel: printk: 58 messages suppressed.
Jun 10 14:15:09 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:14 server kernel: printk: 70 messages suppressed.
Jun 10 14:15:14 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:19 server kernel: printk: 193 messages suppressed.
Jun 10 14:15:19 server kernel: ip_conntrack: table full, dropping packet.
Anyone know what this is about?
Using Centos / Cpanel
Linux server.domain.com 2.6.9-67.0.15.ELsmp #1 SMP Thu May 8 10:52:19 EDT 2008 i686 i686 i386 GNU/Linux
root@server [~]# sysctl net.ipv4.netfilter.ip_conntrack_max
net.ipv4.netfilter.ip_conntrack_max = 65536
I ran this in the meantime.
sysctl -w net.ipv4.netfilter.ip_conntrack_max=72000
I am noticing some packet loss on one of my boxes, most notably when i'm accessing the webmail (however i'm pretty sure it's not that)
Can anyone offer some tips as to how to nail this down?
I have a dedicated windows 2003 server at a colocation facility that i use for game server hosting. Over the past 7 months, packet loss has become horrible with random periods of massive lag. My host says it's something on my end. I use a firewall with SPI enabled. Could that be causing it?
Strange thing is, the first few months my server was at that colo, they only had around 40 other servers on a single OC-192 pipe and i never had packet loss despite having the same SPI firewall. But now they have over 300 servers on the same OC-192 pipe. Could the packet loss be caused by my SPI firewall or them overloading the network with servers?
Basically I registered with a new host. They sent me the details with obviously includes the IP address. I tested the IP address on just-ping.com and it came back with all of them having between 80% to 100% packet loss. Surely this is not normal is it? I havent moved my domain yet but it doesnt look good does it? Should I cancel?
View 14 Replies View RelatedAnyone else experiencing packet loss with a GoDaddy VDS?
I'm in the 208.109.93 subnet.
--- google.com ping statistics ---
200 packets transmitted, 53 received, 73% packet loss, time 199086ms
rtt min/avg/max/mdev = 41.970/42.813/46.022/0.994 ms
with two 3com 3870 switches.
Our setup looks like this
Computer A (GigE) Switch 1 (gigE) Media Converter (Fiber Run) Media Converter (gigE) Switch 2 (gigE) Computer B
We have a cross connect in our data center that uses media converters (fiber) to regular 1000FD on each end.
Each end of the 1000FD handoff is plugged into port 1 of the 3870's (switch 1 and switch 2).
Pinging from Computer A to Computer B we receive a 50% packet loss.
Pinging from Computer B to Switch 1, no packet loss.
Pinging from Computer A to Switch 2, 50% packet loss.
Looking in the interface, the port 1's on each switch auto negotiate to 1000FD, however flow control shows as off.
We asked our data center to run tests on the media converts and fiber runs and everything comes back 100% fine. Has anyone seen a weird issue like this before with 3com switches not playing nicely with media converters?
I have no clue whats going on and our data center said the fiber run/media converter is fine... [url]
I have smokeping monitoring my game servers and so far in the little time that it has been running all my game servers have been encountering an average of 4 to 10% packet loss. Are there are tweaks i can run on the server computer to reduce packet loss? (registry modifications, etc.)
I downloaded a TCP tweak program called "TCP Optimizer" is it safe to run on a Windows 2003 Server OS?
The colo connection is an OC 192 and i have a 100Mbit ethernet card.
Here are my current TCP settings:
Quote:
[SYSTEMCurrentControlSetServicesTcpipParameters]
TcpWindowSize=-1
GlobalMaxTcpWindowSize=-1
EnablePMTUDiscovery=-1
EnablePMTUBHDetect=-1
SackOpts=-1
DefaultTTL=-1
TcpMaxDupAcks=-1
Tcp1323Opts=-1
DisableUserTOSSetting=-1
DefaultTOSValue=-1
[SYSTEMCurrentControlSetServicesAfdParameters]
DefaultReceiveWindow=-1
[SoftwareMicrosoftWindowsCurrentVersionInternet Settings]
MaxConnectionsPerServer=-1
MaxConnectionsPer1_0Server=-1
[SYSTEMCurrentControlSetServicesICSharingSettingsGeneral]
InternetMTU=-1
[SOFTWAREMicrosoftWindowsCurrentVersionExplorerRemoteComputerNameSpace{D6277990-4C6A-11CF-8D87-00AA0060F5BF}]
{D6277990-4C6A-11CF-8D87-00AA0060F5BF}=-1
[SYSTEMCurrentControlSetServicesDnscacheParameters]
MaxNegativeCacheTtl=-1
NegativeCacheTime=-1
NetFailureCacheTime=-1
NegativeSOACacheTime=-1
[SOFTWAREPoliciesMicrosoftWindowsPsched]
NonBestEffortLimit=-5
[SYSTEMCurrentControlSetServicesTcpipServiceProvider]
LocalPriority=499
HostsPriority=500
DnsPriority=2000
NetbtPriority=2001
[SystemCurrentControlSetServicesLanmanServerParameters]
SizReqBuf=-1
[SYSTEMCurrentControlSetServicesNdisWanParametersProtocols]
ProtocolMTU=-2
[SYSTEMCurrentControlSetServicesTcpipParametersInterfaces{D63AC0FA-D2C9-4D83-B057-31A353516AB3}]
MTU=-1
TcpWindowSize=-1
[SYSTEMCurrentControlSetServicesPschedParametersAdapters{D63AC0FA-D2C9-4D83-B057-31A353516AB3}]
NonBestEffortLimit=-2
[SYSTEMCurrentControlSetServicesTcpipParametersInterfaces{8190D94A-3B2D-45C4-998D-312E99D6061D}]
MTU=-1
TcpWindowSize=-1
[SYSTEMCurrentControlSetServicesPschedParametersAdapters{8190D94A-3B2D-45C4-998D-312E99D6061D}]
NonBestEffortLimit=-2
Recently I have been having this problem with two high traffic servers on two different network.
Both servers are Quad-Core Xeons with CentOS 4.5 x86_64 and they are on 100mbps full duplex network. Software configuration is Nginx+Apache+MYSQL control panel is Directadmin.
The servers are serving lots static files and some php scripts.
When the servers start push near or over 30mbps, there will be packet loss when I ping them. around 5% loss, push more bandwidth the more packet loss. I have checked all the log files, I don't see any unusual errors.
Server Load is fine. The NICs were on 100mbps full-duplex mode.
The datacenters claim the networks were fine and all the other servers running on the same switches were fine with no packet loss.
I'm trying to find out why a single interface is causing packet loss on my entire network.
The network consists of four 2924's trunked to a 3550. I have about 20 vlans and a single default route for all traffic my uplink.
The network is perfect until I enable a single server. After I issue a 'no shut' on the interface packet loss is anywhere from 5% to 20% for anything going through the 3550 or even pings from the 3550 to other switches or the uplink.
Here's the statistics/settings of the interface after 1 minute of activity:
Code:
interface FastEthernet0/1
description 228
switchport access vlan 58
switchport mode dynamic desirable
speed 100
duplex full
spanning-tree portfast
FastEthernet0/1 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 0014.f2e6.df01 (bia 0014.f2e6.df01)
Description: 228
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 6/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:01:01
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 2536000 bits/sec, 924 packets/sec
5 minute output rate 341000 bits/sec, 469 packets/sec
60922 packets input, 21630544 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 2 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
31585 packets output, 2859788 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
Transmit FastEthernet0/1 Receive
3583183 Bytes 27018085 Bytes
39516 Unicast frames 76403 Unicast frames
46 Multicast frames 0 Multicast frames
0 Broadcast frames 0 Broadcast frames
0 Discarded frames 0 No dest, unicast
0 Too old frames 0 No dest, multicast
0 Deferred frames 0 No dest, broadcast
0 1 collision frames
0 2 collision frames 0 FCS errors
0 3 collision frames 0 Oversize frames
0 4 collision frames 0 Undersize frames
0 5 collision frames 0 Collision fragments
0 6 collision frames
0 7 collision frames 4355 Minimum size frames
0 8 collision frames 56237 65 to 127 byte frames
0 9 collision frames 1205 128 to 255 byte frames
0 10 collision frames 14 256 to 511 byte frames
0 11 collision frames 67 512 to 1023 byte frames
0 12 collision frames 14528 1024 to 1518 byte frames
0 13 collision frames
0 14 collision frames 0 Flooded frames
0 15 collision frames 3 Overrun frames
0 Excessive collisions 0 VLAN filtered frames
0 Late collisions 0 Source routed frames
0 Good (1 coll) frames 0 Valid oversize frames
0 Good(>1 coll) frames 0 Pause frames
0 Pause frames 0 Symbol error frames
0 VLAN discard frames 0 Invalid frames, too large
0 Excess defer frames 0 Valid frames, too large
0 Too large frames 0 Invalid frames, too small
3672 64 byte frames 0 Valid frames, too small
34066 127 byte frames
2152 255 byte frames
110 511 byte frames
38 1023 byte frames
28 1518 byte frames
CPU utilization for five seconds: 13%/3%; one minute: 12%; five minutes: 9%
77 1317620 3220725 409 9.27% 8.35% 6.20% 0 IP Input
How does 1400 packets/second (4mbits) cause my 3550 to drop packets?
a tool that can measure how much packet loss we are having on a given server by looking at the packets being sent from it. I.e, something than looks at all TCP/80 connections and measures how many packets and bytes are being retransmitted vs actual packets and bytes sent.
This documents explains it:
[url]
We need this to measure network performance of different hosts where we have dedicated servers. This would be a good way of measuring performance with the actual data of our users.
Does anyone know of such tool? I.e, something that can say
2532 packets/second - 132 retransmits/second (4.8%)
25.43Mbps/sec total traffic - 24.84 Mbps/sec actual data sent - 0.59Mbps retransmits
Even better if it can then break it out on IP prefixes. like
192.0/16: 0.2% retransmits
192.1/16: 3.2% retransmits
192.2.16: 0.3% retransmits
192.3/16: 22.5% retransmits
192.4/16: 0.3% retransmits
This would be a good indicator of connectivity between the host where the tests are ran and other specific hosts.
I recently switched over to SoftLayer for dedicated hosting and the servers are great. However we've been getting hit on and off with massive (50-80%) packet loss, which has been crippling our performance and causing all sorts of problems
I put in a support ticket and they linked me to the Internet Health Report website and said it was due to one of their bandwidth providers (I think Global CrossinG) and not on their internal network and to be patient as it could take time to resolve
Are any other SoftLayer customers going through this? Is this an unusual occurrence? I feel like if it was really one of their partners that it would be affecting a lot of their customers and it would be a high priority issue right?
I'm kind of stuck on what to do; I just invested a lot of energy into moving content onto these new servers and am concerned about whether to wait it out or whether to start finding a new company. This kind of packet loss is really unacceptable...
my server sql keeps loss db connection during 'cpbackup' in progresss.
below are my.cnf settings. can someone suggest me how to tweak to optimize?
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-locking
skip-innodb
query_cache_limit=1M
query_cache_size=128M
query_cache_type=1
max_user_connections=200
max_connections=500
interactive_timeout=10
wait_timeout=20
connect_timeout=20
thread_cache_size=128
key_buffer=512M
join_buffer=1M
max_allowed_packet=16M
table_cache=1024
record_buffer=1M
sort_buffer_size=4M
read_buffer_size=4M
max_connect_errors=10
thread_concurrency=8
myisam_sort_buffer_size=64M
server-id=1
I understand the risks of not using a datacenter, but for a smallish site to which uptime isn't key, is it possible to get server-quality bandwidth to my house? (No I don't mean like Gigabit, I mean like upwards of 5mbps)? I'd really like to maintain my own server (probably build one).
I live in Milwaukee, so colocation is, AFAIK, out. And while I can save up for and buy a computer every few years, I cannot sustain $80/month. (I am a middle school student. My income isn't exactly regular.)
So the question... can I get an ISP to let me run a server at decent speeds out of my house? Would its costs exceed colocation or that of a dedicated server?
I have a spare machine which is fairly fast, i like to know what are the steps to make a web server from home that actually works well, i have a static IP and a fast internet too.
Which operating system works better and any guide to a step by step setup.
I want to ask if what are the things needed to establish my own server here at home? What are racks? I did some research but I can't understand it.
What are the things needed? RAM? bandwidth where to get? by the way my location is here in philippines
I'm just wondering what the practicalities and problems might be in setting up a web server from home. At the moment we have a 2Mb cable connection but our provider offers a 20Mb connection.
Would it be possible to set up a small hosting business from home with such a connection?
I want to run a server from my home, so I find this provider:
[url]
and the plan is FastAccess 6MB
so with the plan comes a static IP and I asked theyr support and they say YES , I cant run my own server
so here is my question: is that a good idea and what about the speed?
I am currently leasing a VPS and the kbps upload rate is below my upload rate at home, so I am going to save 50 bucks/ month and move it to home.
I plan on using an older dell desktop with 512mb ram. I would like to use this also as sorta a sync host between my laptop and desktop. I would like to be able to sync certain folders and files which would be stored on the server. I also obviously need to have ftp access, smtp (no knowledge of this area), mysql, php, etc. My big question is which OS should I use? I have fiddled around had a local copy of my site working on my main desktop in windows using apache. Should I stick with windows or would I be better served using a linux distro such as ubuntu? I currently have a static IP address at home. How do I handle the nameservers?
Another thing is how easily can I manage things like emails and subdomains?
So I have designed some software for my brother who owns a business and needed a website to manage his clients and send emails to them and stuff. Right now we are using Hostmonster, which has been pretty good so far.
He was talking to me how it would be nice to be able to email the website and have the site automatically store the information in these emails into a database for information regarding his clients, which I know is possible, but not on a shared host it seems. I have tested my own email receiving script on a test server on my computer and it works fine. So we are continually finding our limits with a shared host. We have been looking into dedicated hosting, but as you all know its quite a price jump to go from $7 a month to $200+.
I got thinking and remembered that my dad has always had a business web plan from our ISP at home (cause he likes fast internet), which according to there website serves 1Mbps upload speed. We also have 2-3 old computers sitting at home that we don't use anymore (2)2ghz pentium 4 Dells and a 3.0ghz+ Pentium 4 HP. I was thinking we could probably just plug one of those into the router, forward some ports and have our own server up and running. For now we would only host this software I made for my bro, which is used by only 4 people, and that's not even at the same time usually. So there is very little load to deal with. But in the future we may put a few other sites that we have in mind which would use PHP and MySQL quite a bit.
I was just curious what some of your opinions were on creating a home server. I was looking at Ubuntu Server edition as a possibility, or XAMPP since all my machines are Windows XP. One machine doesn't work cause the hard drive is out, so if I use that I would probably have to put Ubuntu on it. Any suggestions on good server software would be great! I believe the business web plan my dad has also comes with a static IP as well, so that will help. Look forward to hearing your suggestions!
I wanna host my website from home.But i dont know to much about it.Can you help me or give me some link where i can find Guides?Im using Uniform Server btw...but i dont know what next? Main goal for me is to setup server,,and i need definitive guide!
View 14 Replies View Relatedit possible to test own server in my home(only to test)
iam haveing centos 5.4 with vmware
need 2mpbs for testing it be good i think so
but only i haveing issue is ip(iam useing dynamic ips
it anyway to test as local server with dynamic ips?
I am running windows 7 Ultimate.
I have installed Apache, PHP and MySQL cus they are |33t.
I am using free dns.. the domain name is PowerfulPlacement.com
localhost WORKS
PowerfulPlacement.com does not work... Here is my VirtualHost in my httpd.conf..
NameVirtualHost 72.219.185.53
<VirtualHost 72.219.185.53:80>
ServerName powerfulplacement.com
ServerPath D:/www
DocumentRoot "D:/www/"
<directory D:/www/>
allow from all
</directory>
</VirtualHost>
I dont know why powerfulplacement.com isn't working. I remember in linux I had to start up named or dns or something for it to work but I'm not quit sure with Windows.
I am mainly using asp.net2.0 (C#, VB) for programming), so I need the server pc meets the requirement for that.
Would you please let me know where to find those information such as minim requirement for the hardware, also related software?
In the future I'm thinking of running a web server from my residential house.
I currently have rogers cable , but they do not allow you to run a server from their residential internet connection.
Does anyone run a server from their house? What kind of internet connection do you have?
I'm guessing most people don't do this because they find out it cost way to much to get a special connection ran to their house. Colocation might be the only way to go.
im going to be setting up a basic linux server in my home to host a small family website, i plan to use centos or debian, but was wondering what other things would i need to get my server online,
View 7 Replies View Relatedive got a windows server 2003 enterprise edition server at home and i have 8 static ip addresses that came with my adsl broadband
how can i set up a web server with that i also have a domain
step by step guide on setting up a web server at home
Ive recently inherited a decent desktop pc and am wondering if its feasable to run it as a web server from my home to serve pages from a few small websites. I know some about setting up a web server with linux and think i could get it going in theory but am wondering if a home pc setup would be reliable enough in this situation....?
View 4 Replies View RelatedI'm going to set up a streaming server at home, since I think streaming hosting is very expensive, so I would rather to spend my money in a good home connection.
That is where my question starts, what home connection should I have in order to stream live video at 200 kbps to over 5000 clients?
I want to host my own sites and I want 24/7 access to my server so if I brought one how would I host it from home?
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