Re: [squid-users] squid performance epoll. 350req/sec 100% cpu

Michal Mihalik wrote:
> Hello.
> I am tring to optimize squid for best possible performance.
> it is in production and it's doing more than 350req/sec. At peaks upto
> 500req/sec.
>
> My problem is only one. 100% cpu. :-)
>
> I tried to update my debian to 2.6.16 and recompiled squid:
>
> Squid Cache: Version 2.5.STABLE12
> configure options: --prefix=/usr --exec_prefix=/usr --bindir=/usr/sbin
> --sbindir=/usr/sbin --libexecdir=/usr/lib/squid --sysconfdir=/etc/squid
> --localstatedir=/var/spool/squid --datadir=/usr/share/squid
> --enable-async-io --with-pthreads --enable-storeio=ufs,aufs,diskd,null
> --enable-linux-netfilter --enable-arp-acl --enable-removal-policies=lru,heap
> --enable-snmp --enable-delay-pools --enable-htcp --enable-epoll
> --enable-cache-digests --enable-underscores --enable-referer-log
> --enable-useragent-log --enable-auth=basic,digest,ntlm --enable-carp
> --with-large-files i386-debian-linux
>
> the thing I realy don't like is 25% cpu + 50% system cpu .
>
> why the 50% system!!!!!
> can anyone help?

Try compiling with the epoll-patch. Made an enormous
performance-improvement here. System-time is "wasted" in the
connection-handling (polling/select) - which is more efficient with epoll.

Regards,
 Stefan
Received on Mon Mar 27 2006 - 09:37:35 MST