slow server (gameserver)

ocean eyes · #1 01-22-2006, 05:18 PM

I have a gameserver running now: 3.0 Ghz - 1Gb RAM - 80 Gb SATA disk.

At the beginning it was acting fast. At this moment i'm running about 4 soldier of fortune 2 servers on it (privates of our clan).

For some reason it start acting very slow since 2 days ago.

I checked everything Hard disk space - Connection speed

Everything seems to be fine, till i change a map on one of those servers. Server cpu raise till 100% for about 30 seconds. Normally that should be finished on 6 seconds like before.

RAM usage is normal.

Is there a way to check if there is a problem? Cpu problem? Ram problem? Disk failures?

I'm running debian as os.

GFuse|Kevin · #2 01-22-2006, 05:43 PM

Post output of..

hdparm -tT /dev/sda
cat /proc/loadavg
free -m
cat /proc/meminfo
top | head -5

ocean eyes · #3 01-22-2006, 06:05 PM

thanks for your reply

hdparm -tT /dev/sda

Code:

hdparm: command not found

cat /proc/loadavg

Code:

0.18 0.20 0.21 1/70 14301

free -m

Code:

             total       used       free     shared    buffers     cached
Mem:          1002        972         29          0        139        496
-/+ buffers/cache:        336        665
Swap:          964          0        964

cat /proc/meminfo

Code:

MemTotal:      1026056 kB
MemFree:         29724 kB
Buffers:        142456 kB
Cached:         508916 kB
SwapCached:          0 kB
Active:         400560 kB
Inactive:       511308 kB
HighTotal:      122048 kB
HighFree:          120 kB
LowTotal:       904008 kB
LowFree:         29604 kB
SwapTotal:      987896 kB
SwapFree:       987896 kB
Dirty:              52 kB
Writeback:           0 kB
Mapped:         272036 kB
Slab:            77556 kB
CommitLimit:   1500924 kB
Committed_AS:   342396 kB
PageTables:        820 kB
VmallocTotal:   114680 kB
VmallocUsed:      1124 kB
VmallocChunk:   113164 kB

top | head -5

Code:

top - 23:28:10 up 10:09,  2 users,  load average: 0.16, 0.19, 0.20
Tasks:  71 total,   2 running,  69 sleeping,   0 stopped,   0 zombie
Cpu(s): 12.1% us,  0.3% sy,  0.0% ni, 87.0% id,  0.3% wa,  0.0% hi,  0.3% si
Mem:   1026056k total,   996340k used,    29716k free,   142460k buffers
Swap:   987896k total,        0k used,   987896k free,   508980k cached

**Scott.Mc** · #4 01-22-2006, 09:31 PM

You need some more ram if you look at your free -m output.

Soldier of fortune is quite lightweight however it does require some ram too run it and 512 simply isn't going to run 4 servers.

I have never hosted any servers other than my own personal ones but I did find that on sof2 if you are doing anything on the server at the time, such as say updating anything you will `lag` out the entire sof2 servers. This happens on all forms of linux I tested, however did not happen on freeBSD.

GFuse|Kevin · #5 01-22-2006, 11:02 PM

Looks fine to me.
Try to apt-get install hdparm, and re run the hdparm command.
This sould let you know how fast your hd is performing.
You havent touched swap yet so you are good on ram.
Also try ifconfig | grep errors
I doubt this is the issue, but collisions cause packet loss.
So check for that as well.
Otherwise, it could be very large log files being parsed on the game server.
I know with statsme on HLDS/CS, if you have a large server..
When you change maps it will take a long time to parse the entire log file for stats, before people can join the game.

mahadri · #6 01-23-2006, 04:19 AM

Quote:

Originally Posted by Scott.Mc

You need some more ram if you look at your free -m output.

Soldier of fortune is quite lightweight however it does require some ram too run it and 512 simply isn't going to run 4 servers.

ocean eyes has 1 GB of RAM and is only using 337 MB. The amount of RAM is more than adequate.

ocean eyes · #7 01-23-2006, 06:57 AM

apt-get install hdparm

Code:

Reading package lists... Done
Building dependency tree... Done
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
  webmin-apache: Depends: webmin (>= 1.140) but it is not installable
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

i tried apt-get -f install but that doesn't solve this problem. it seems i can't remove that part.

ifconfig | grep errors

Code:

          RX packets:6620427 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4120833 errors:0 dropped:0 overruns:0 carrier:0
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

I checked for large logs which i didn't found.

The server is not overloaded or something, it worked fine a few days ago. We didn't installed anything

**Scott.Mc** · #8 01-23-2006, 07:17 AM

Quote:

Originally Posted by mahadri

ocean eyes has 1 GB of RAM and is only using 337 MB. The amount of RAM is more than adequate.

That's because I read the output wrong, you are correct however now that I have looked at it again.

ocean eyes · #9 01-23-2006, 08:18 AM

Quote:

Originally Posted by Scott.Mc

That's because I read the output wrong, you are correct however now that I have looked at it again.

How can you see i'm using only 337 Mb?

mahadri · #10 01-23-2006, 10:53 AM

Quote:

Originally Posted by ocean eyes

How can you see i'm using only 337 Mb?

used - buffers - cache = resident memory used by processes
972 - 139 - 496 = 337 MB

GFuse|Kevin · #11 01-23-2006, 01:50 PM

wget http://www.linex.org/dcc/pool/main/h...6.1-2_i386.deb
dpkg --ignore-depends=webmin --install hdparm_6.1-2_i386.deb

This may report an error of webmin but not a warning, allowing it to install.

ocean eyes · #12 01-23-2006, 03:22 PM

Quote:

Originally Posted by TDK-Kevin

wget http://www.linex.org/dcc/pool/main/h...6.1-2_i386.deb
dpkg --ignore-depends=webmin --install hdparm_6.1-2_i386.deb

This may report an error of webmin but not a warning, allowing it to install.

Thanks for your reply

cat /etc/fstab

Code:

/dev/md0   /boot ext3 defaults 0 1
/dev/md1   none  swap swap
/dev/md2   /     ext3 defaults,errors=remount-ro 0 1
/dev/md3   /data ext3 defaults,errors=remount-ro 0 1
proc       /proc proc
/data/var /var bind bind
/data/home /home bind bind

hdparm -i /dev/md0

Code:

/dev/md0:
HDIO_GET_IDENTITY failed: Invalid argument

hdparm /dev/md3

Code:

/dev/md3:
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 60048/2/4, sectors = 105337984, start = 0

Is this the info you need?

ocean eyes · #13 01-23-2006, 04:07 PM

hdparm -tT /dev/md0

Code:

/dev/md0:
 Timing cached reads:   3668 MB in  2.00 seconds = 1833.89 MB/sec
 Timing buffered disk reads:   70 MB in  1.24 seconds =  56.45 MB/sec

Doesn't seems to be a problem...

GFuse|Kevin · #14 01-23-2006, 04:26 PM

hdparm -d1 /dev/md
Sould set DMA on if it is off.
Thou the hd speeds seem about average for that type of disk.
It seems like it is game specific.
See if the game supports a debug mode such as developer 1.
If so it may output exactly what it is loading etc besides simply the map.

ocean eyes · #15 01-23-2006, 04:55 PM

Quote:

Originally Posted by TDK-Kevin

hdparm -d1 /dev/md
Sould set DMA on if it is off.
Thou the hd speeds seem about average for that type of disk.
It seems like it is game specific.
See if the game supports a debug mode such as developer 1.
If so it may output exactly what it is loading etc besides simply the map.

hdparm -d1 /dev/md0

Code:

/dev/md0:
 setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Invalid argument

There is a debug mode yes. But i already tried that. It's still the same as before. And we didn't changed any setting since a few days....

slow server (gameserver)

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