[squid-users] High cpu load with squid

Hi.
For the last few days I have had troubles with my squid (3.0.24) - it gets a lot of cpu, and
response time is very long, about 4000 ms. I didn't see any information
in cache.log, so I tried to upgrade to latest stable release - it
doesn't change anything. I have read a lot about high cpu usage when squid
rebuild disc cache, so I try change cache_dir type from ufs to aufs or
coss (./configure said about remove coss from squid 3.x), but the problem still exists.

What am I doing wrong? My squid has been working perfectly for two years :(. Here's my config.log and squid.conf:

./configure --prefix=/usr/local/squid-3.1.8 --enable-useragent-log
--enable-referer-log --enable-default-err-language=Polish
--enable-err-languages=Polish --enable-linux-netfilter --enable-ssl
--with-large-files --with-filedescriptors=16384 -enable-snmp
--with-maxfd=16384 --with-pthreads --enable-async-io --disable-dlmalloc
--with-aio --enable-epoll

http_port 192.168.1.1:8080 transparent
pid_filename /var/run/squid/squid.pid
acl sloneczko src 192.168.0.0/23
http_access allow sloneczko
error_default_language pl-pl

redirect_program /usr/local/bin/redirector.pl
redirect_children 80

store_avg_object_size 8 kB
minimum_object_size 1 KB
maximum_object_size 100 MB
maximum_object_size_in_memory 1 MB
cache_mem 1000 MB

cache_swap_low 80%
cache_swap_high 100%
# previous cache
#cache_dir ufs /var/spool/squid-cache/cache 30000 12 256
cache_dir aufs /var/spool/squid-cache/cache 30000 60 100

dns_nameservers 192.168.1.100 192.168.1.200
ipcache_size 8192
fqdncache_size 1024
positive_dns_ttl 2 hours
negative_dns_ttl 1 minutes
ipcache_low 90
ipcache_high 95

emulate_httpd_log on
access_log /var/log/squid/access.log
cache_log /var/log/squid/cache.log
cache_store_log /dev/null

Rest of squid.conf are acls. I have about 30 - 40 mbps of traffic. On board
are core2duo 1.8 ghz 4 gb ram on intel chipset, 2x SATA on soft raid (for cache - md0).

Any ideas? When I run -k debug I can't do anything - load has increased,
and nothing could be seen, thousands lines per second was write to cache.log.
Maybe I have something wrong in my squid.conf? Thanks for any ideas.

-- 
Pozdrawiam
Michał Prokopiuk
michal[@]sloneczko.net
http://www.sloneczko.net