[squid-users] High cpu usage by re_search_internal

[Marcus Kool]

I suspect that the language setting is causing it.
If $LANG is different from "C" it may have a huge impact on the
performance of regular expression evaluation (not only in Squid but also
awk, sed etc.)
Try this:
   LANG=C /etc/init.d/squid start
and see if Squid improves.

Marcus

> Hi,
>
> I have 2 squid boxes . Same version,OS and almost same config,hardware .
> Both have same problem also . normally cpu usage by squid is very high . I
> have tried this guide http://wiki.squid-cache.org/SquidFaq/SquidProfiling
> and found more than 85% of cpu usage is by re_search_internal symbol name
> .
> Please help me to solve this problem
>
> samples  %        image name               app name                 symbol
> name
> 3297480  89.3408  libc-2.15.so             squid3
> re_search_internal
>
>
>  squid3 -v
> Squid Cache: Version 3.1.20
> configure options:  '--build=x86_64-linux-gnu' '--prefix=/usr'
> '--includedir=${prefix}/include' '--mandir=${prefix}/share/man'
> '--infodir=${prefix}/share/info' '--sysconfdir=/etc'
> '--localstatedir=/var'
> '--libexecdir=${prefix}/lib/squid3' '--srcdir=.'
> '--disable-maintainer-mode'
> '--disable-dependency-tracking' '--disable-silent-rules'
> '--datadir=/usr/share/squid3' '--sysconfdir=/etc/squid3'
> '--mandir=/usr/share/man' '--with-cppunit-basedir=/usr' '--enable-inline'
> '--enable-async-io=8' '--enable-storeio=ufs,aufs,diskd'
> '--enable-removal-policies=lru,heap' '--enable-delay-pools'
> '--enable-cache-digests' '--enable-underscores' '--enable-icap-client'
> '--enable-follow-x-forwarded-for'
> '--enable-auth=basic,digest,ntlm,negotiate'
> '--enable-basic-auth-helpers=LDAP,MSNT,NCSA,PAM,SASL,SMB,YP,DB,POP3,getpwnam,squid_radius_auth,multi-domain-NTLM'
> '--enable-ntlm-auth-helpers=smb_lm,'
> '--enable-digest-auth-helpers=ldap,password'
> '--enable-negotiate-auth-helpers=squid_kerb_auth'
> '--enable-external-acl-helpers=ip_user,ldap_group,session,unix_group,wbinfo_group'
> '--enable-arp-acl' '--enable-esi' '--enable-zph-qos' '--enable-wccpv2'
> '--disable-translation' '--with-logdir=/var/log/squid3'
> '--with-pidfile=/var/run/squid3.pid' '--with-filedescriptors=65536'
> '--with-large-files' '--with-default-user=proxy'
> '--enable-linux-netfilter'
> 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -fPIE -fstack-protector
> --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wall'
> 'LDFLAGS=-Wl,-Bsymbolic-functions -fPIE -pie -Wl,-z,relro -Wl,-z,now'
> 'CPPFLAGS=-D_FORTIFY_SOURCE=2' 'CXXFLAGS=-g -O2 -fPIE -fstack-protector
> --param=ssp-buffer-size=4 -Wformat -Werror=format-security'
> --with-squid=/build/buildd/squid3-3.1.20
>
>
>
> Linux 3.5.0-51-generic #76-Ubuntu SMP Thu May 15 21:19:10 UTC 2014 x86_64
> x86_64 x86_64 GNU/Linux
>
>
>
>
>
>
> --
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