Optimizing Server For Proxy Hosting

Mar 21, 2007

i have a Pentium D 820, 2GB Ram at LT where i am hosting a few proxies. Using Centos and Directadmin.

It's realy fast and i am happy with it. The only problem i am facing is that load is jumping up to 60 sometimes but just for a few seconds. Especially when a lot of people are using the proxy and it slows down a bit. That affects only the proxified pages and not a few personal html sites i also host there.

At the moment i am seeing in top that the CPU usage varies from 0,2 to 8, 12, 21 etc but just for a second or two

here is the top output

Quote:

[root@server ~]# top
top - 12:46:18 up 23 days, 2:36, 1 user, load average: 0.36, 0.44, 0.29
Tasks: 353 total, 1 running, 351 sleeping, 0 stopped, 1 zombie
Cpu(s): 1.2% us, 0.5% sy, 0.0% ni, 98.3% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 2066668k total, 1297168k used, 769500k free, 53192k buffers
Swap: 2040244k total, 0k used, 2040244k free, 273108k cached

and another output

Quote:

[root@server ~]# top
top - 12:58:34 up 23 days, 2:48, 1 user, load average: 0.58, 0.39, 0.30
Tasks: 209 total, 4 running, 205 sleeping, 0 stopped, 0 zombie
Cpu(s): 16.9% us, 5.1% sy, 0.0% ni, 77.9% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 2066668k total, 1100760k used, 965908k free, 53196k buffers
Swap: 2040244k total, 0k used, 2040244k free, 276744k cached

and the number of connections on port 80

Quote:

[root@server ~]# netstat -an |grep :80 |wc -l
216
[root@server ~]#

is there any way to tweak or optimize the server so than it can cope better when a lot of people are using the proxy.

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Code:
[Thu Oct 04 12:05:43 2007] [notice] caught SIGTERM, shutting down
[Thu Oct 04 12:05:48 2007] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] Init: SSL server IP/port conflict: default-69-64-36-86:443 (/etc/httpd/conf.d/zz010_psa_httpd.conf:271) vs. webmail:443 (/etc/httpd/conf.d/zz010_psa_httpd.conf:344)
[Thu Oct 04 12:05:48 2007] [warn] Init: SSL server IP/port conflict: default-69-64-37-16:443 (/etc/httpd/conf.d/zz010_psa_httpd.conf:111) vs. *****:443 (/var/www/vhosts/*****/conf/httpd.include:12)
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[Thu Oct 04 12:05:48 2007] [notice] Digest: done
[Thu Oct 04 12:05:48 2007] [notice] mod_python: Creating 4 session mutexes based on 512 max processes and 0 max threads.
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:05:48 2007] [warn] Init: SSL server IP/port conflict: default-69-64-36-86:443 (/etc/httpd/conf.d/zz010_psa_httpd.conf:271) vs. webmail:443 (/etc/httpd/conf.d/zz010_psa_httpd.conf:344)
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[Thu Oct 04 12:05:48 2007] [notice] Apache configured -- resuming normal operations
[Thu Oct 04 12:06:40 2007] [warn] child process 25195 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25197 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25204 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25207 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25219 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25228 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25232 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25244 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25246 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25257 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25261 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25262 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25265 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25275 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25278 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25281 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25283 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25287 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25351 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25291 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25300 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25302 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25307 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25355 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25365 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25374 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25376 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25377 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25408 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25412 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25423 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25430 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25434 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25437 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25460 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25463 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25474 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25475 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25476 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25565 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25478 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25480 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25481 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25483 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25484 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25485 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25486 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25583 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25489 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25490 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25491 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25493 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25590 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:40 2007] [warn] child process 25591 still did not exit, sending a SIGTERM
[Thu Oct 04 12:06:42 2007] [notice] caught SIGTERM, shutting down
[Thu Oct 04 12:06:46 2007] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Thu Oct 04 12:06:46 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:06:46 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:06:46 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:06:46 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:06:46 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:06:46 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:06:46 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:06:46 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:06:46 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:06:46 2007] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Thu Oct 04 12:06:46 2007] [warn] Init: SSL server IP/port conflict: default-69-64-36-86:443 (/etc/httpd/conf.d/zz010_psa_httpd.conf:272) vs. webmail:443 (/etc/httpd/conf.d/zz010_psa_httpd.conf:345)

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ServerLimit 1000
MaxClients 500
MaxRequestsPerChild 5000
ServerSignature On

my.cnf (Seprate box with 2GB RAM)

log-slow-queries = /var/log/mysql/mysql-slow.log
skip-external-locking
skip-locking
skip-innodb
skip-bdb
skip-name-resolve
max_connections = 800
max_user_connections = 800
key_buffer = 36M
key_buffer_size = 64M
myisam_sort_buffer_size = 64M
join_buffer_size = 2M
read_buffer_size = 2M
sort_buffer_size = 3M
thread_stack = 128K
table_cache = 1024
thread_cache_size = 286
interactive_timeout = 25
wait_timeout = 1800
connect_timeout = 10
max_allowed_packet = 16M
max_connect_errors = 999999
query_cache_limit = 8M
query_cache_size = 64M
query_cache_type = 1
tmp_table_size = 16M
old_passwords=1
user=mysql
quick
quote-names
max_allowed_packet = 16M
[isamchk]
key_buffer = 16M

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