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-   -   Using not all hardware speed (http://www.litespeedtech.com/support/forum/showthread.php?t=5652)

GiedriusQ 01-22-2012 09:56 AM
Using not all hardware speed
 
Hello,

First of all I want to say hello to everyone in this forum and sorry if I posted my thread in wrong section.

Ok, now about my "problem".
Currently my server running on:
Intel Q6600 processor (4core/4th/2,4Ghz/8Mb L2)
8GB of RAM
3x120GB SSD (2 in software raid0, mounted on /files/ )
1Gbps network.
Debian Linux
2Core lite license.

Internet speed (IN) are around 200-300Mbps, OUT: 150-200Mbps
I think it's quiet too slow for such fast disk[?].
I'm using moded rapidleech script, so in fact it just read data from external sites and write data to files (located in /files/), then serve files to users. In one word, work with files.

So in my opinion something wrong with litespeed server settings, because speed is too low, IO sometimes gets very high, maybe someone can help me?

All my configuration and real-time stats:http://imageshack.us/g/194/muninq.png/

NiteWave 01-22-2012 06:07 PM
please paste output
#top -c

GiedriusQ 01-26-2012 07:56 AM
Quote:
Originally Posted by NiteWave (Post 31638)
please paste output
#top -c
Code:
root@52585:~# top -c
top - 17:53:48 up 11 days, 14:26,  1 user,  load average: 1.69, 1.27, 1.29
Tasks: 207 total,  2 running, 204 sleeping,  0 stopped,  1 zombie
Cpu(s): 11.2%us, 19.2%sy,  0.0%ni, 58.5%id,  1.5%wa,  0.4%hi,  9.2%si,  0.0%st
Mem:  8188092k total,  8136972k used,    51120k free,    15176k buffers
Swap: 14115832k total,    21432k used, 14094400k free,  7202876k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
19385 mysql    20  0  326m  36m 2940 S  96  0.5  1589:53 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/mysqld/mysqld.pid
22246 proxy    20  0 39016  19m 1424 S  13  0.2  77:48.11 (squid) -D -YC
17343 nobody    1 -19 95424 9488 3636 R    3  0.1  0:08.64 lsphp5:/home/<...>/index.php
17339 nobody    1 -19 95424 9652 3688 S    3  0.1  0:05.12 lsphp5:/home/<...>/index.php
16163 nobody    1 -19 95024 9508 3640 S    2  0.1  0:06.44 lsphp5
 7957 nobody    1 -19  125m  23m 5152 S    2  0.3  30:57.43 litespeed (lshttpd)
15142 nobody    1 -19 95428 9572 3684 S    2  0.1  0:07.36 lsphp5:/home/<...>/index.php
16031 nobody    1 -19 97880  11m 3608 S    2  0.1  0:04.24 lsphp5:/home/<...>/index.php
18291 nobody    1 -19 97892  11m 3608 S    2  0.1  0:00.65 lsphp5:/home/<...>/index.php
  47 root      20  0    0    0    0 S    1  0.0  57:18.83 [kswapd0]
 7956 nobody    1 -19  122m  18m 3216 S    1  0.2  21:28.09 litespeed (lshttpd)
17006 nobody    1 -19 95280 9284 3556 S    1  0.1  0:07.07 lsphp5:/home/<...>/index.php
17189 nobody    1 -19 96700  10m 3584 S    1  0.1  0:06.22 lsphp5:/home/<...>/index.php
 1057 nobody    1 -19 95424 9564 3652 S    1  0.1  0:15.84 lsphp5:/home/<...>/index.php
18798 nobody    1 -19 95684 9864 3652 S    1  0.1  0:05.00 lsphp5:/home/<...>/index.php
20069 nobody    1 -19 96564 9744 3312 S    1  0.1  0:00.13 lsphp5
 2081 nobody    1 -19 98020  11m 3668 S    1  0.1  0:15.13 lsphp5:/home/<...>/index.php
 4449 nobody    1 -19 96560  10m 3672 S    1  0.1  0:16.31 lsphp5:/home/<...>/index.php
 7432 nobody    1 -19 99120  13m 3624 S    1  0.2  0:35.67 lsphp5:/home/<...>/index.php
10969 nobody    1 -19 95536 9988 3628 S    1  0.1  0:11.04 lsphp5:/home/<...>/index.php
17669 nobody    1 -19 96960  10m 3628 S    1  0.1  0:02.92 lsphp5:/home/<...>/index.php
18799 nobody    1 -19 95324 9568 3628 S    1  0.1  0:03.23 lsphp5:/home/<...>/index.php
18802 nobody    1 -19 96960  10m 3672 S    1  0.1  0:02.24 lsphp5:/home/<...>/index.php
    4 root      20  0    0    0    0 S    0  0.0  5:09.72 [ksoftirqd/0]
 2899 nobody    1 -19 95424 9504 3640 S    0  0.1  0:18.62 lsphp5:/home/<...>/index.php
 4267 nobody    1 -19 95424 9448 3628 S    0  0.1  0:12.63 lsphp5:/home/<...>/index.php
11352 nobody    1 -19 95680 9844 3652 S    0  0.1  0:09.96 lsphp5:/home/<...>/index.php
13720 root      20  0 72388  24m 1464 S    0  0.3  0:00.91 lfd - sleeping
14752 nobody    1 -19 95424 9464 3640 S    0  0.1  0:04.14 lsphp5:/home/<...>/index.php
18492 nobody    1 -19 95172 9288 3632 S    0  0.1  0:04.26 lsphp5
20064 root      20  0 19168 1432  996 R    0  0.0  0:00.06 top -c
    1 root      20  0  8352  524  460 S    0  0.0  0:07.06 init [2]
    2 root      20  0    0    0    0 S    0  0.0  0:00.00 [kthreadd]
    3 root      RT  0    0    0    0 S    0  0.0  0:02.96 [migration/0]
    5 root      RT  0    0    0    0 S    0  0.0  0:00.00 [watchdog/0]
    6 root      RT  0    0    0    0 S    0  0.0  0:03.02 [migration/1]
    7 root      20  0    0    0    0 S    0  0.0  1:18.84 [ksoftirqd/1]

GiedriusQ 01-26-2012 10:40 AM
And there is another problem, after sometime server OUT speed become very very low. Sometimes IN speed also lowers...
When using nginx for file serve such problem with speed changes to very low never shows up.

webizen 01-26-2012 01:20 PM
Quote:
Originally Posted by GiedriusQ (Post 31635)
...
3x120GB SSD (2 in software raid0, mounted on /files/ )
1Gbps network.
Debian Linux
2Core lite license.

Internet speed (IN) are around 200-300Mbps, OUT: 150-200Mbps
I think it's quiet too slow for such fast disk[?].
...
Your throughput is not necessarily slow given your 1Gbps network. It depends on what kind of file (smaller files lower the bandwidth usage due to TCP overhead) you serve and where the bottleneck is.

From the 'top -c' screenshot, looks like I/O is not the bottleneck. server load is not high. Real-time stats show you only have less than http 1000 connections used. However, your lsphp5 has max connection of 1000 which is too high. It should be set to 100~150 (in your case). so is the PHP_LSAPI_CHILDREN variable.

GiedriusQ 01-27-2012 12:24 PM
Quote:
Originally Posted by webizen (Post 31686)
Your throughput is not necessarily slow given your 1Gbps network. It depends on what kind of file (smaller files lower the bandwidth usage due to TCP overhead) you serve and where the bottleneck is.

From the 'top -c' screenshot, looks like I/O is not the bottleneck. server load is not high. Real-time stats show you only have less than http 1000 connections used. However, your lsphp5 has max connection of 1000 which is too high. It should be set to 100~150 (in your case). so is the PHP_LSAPI_CHILDREN variable.
I did what You say, but nothing changed.
For example by internet max speed is 500KB/s. When I'm download file from server I get only ~100-200KB/s, but when using nginx and download same file I get all my 500KB/s all the time.
I think something really wrong with my litespeed server settings, but I can't find out what...


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