Hi,
When i have heavy traffic that time squid always consume 100% cpu
utilization. Is there anyway to tune squid or OS to reduce cpu utilization?
When i remove traffic from router to squid means that time, there is no
traffic on squid box and that time also i can see same 100% cpu
utilization in top command. What could be the reason behind that? Does
squid occupied cpu usage even in there is no traffic?
OS: CENTOS 64 bit
squid -v
Squid Cache: Version 3.1.10
configure options: '--build=x86_64-unknown-linux-gnu'
'--host=x86_64-unknown-linux-gnu' '--target=x86_64-redhat-linux-gnu'
'--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr'
'--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc'
'--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib64'
'--libexecdir=/usr/libexec' '--sharedstatedir=/var/lib'
'--mandir=/usr/share/man' '--infodir=/usr/share/info'
'--exec_prefix=/usr' '--libexecdir=/usr/lib64/squid'
'--localstatedir=/var' '--datadir=/usr/share/squid'
'--sysconfdir=/etc/squid' '--with-logdir=$(localstatedir)/log/squid'
'--with-pidfile=$(localstatedir)/run/squid.pid'
'--disable-dependency-tracking' '--enable-arp-acl'
'--enable-follow-x-forwarded-for'
'--enable-auth=basic,digest,ntlm,negotiate'
'--enable-basic-auth-helpers=LDAP,MSNT,NCSA,PAM,SMB,YP,getpwnam,multi-domain-NTLM,SASL,DB,POP3,squid_radius_auth'
'--enable-ntlm-auth-helpers=smb_lm,no_check,fakeauth'
'--enable-digest-auth-helpers=password,ldap,eDirectory'
'--enable-negotiate-auth-helpers=squid_kerb_auth'
'--enable-external-acl-helpers=ip_user,ldap_group,session,unix_group,wbinfo_group'
'--enable-cache-digests' '--enable-cachemgr-hostname=localhost'
'--enable-delay-pools' '--enable-epoll' '--enable-icap-client'
'--enable-ident-lookups' '--enable-linux-netfilter'
'--enable-referer-log' '--enable-removal-policies=heap,lru'
'--enable-snmp' '--enable-ssl' '--enable-storeio=aufs,diskd,ufs'
'--with-aufs-threads=128' '--enable-useragent-log' '--enable-wccpv2'
'--enable-esi' '--with-aio' '--with-default-user=squid'
'--with-filedescriptors=16384' '--with-dl' '--with-openssl'
'--with-pthreads' '--enable-zph-qos' '--enable-err-languages=English'
'--enable-default-err-language=English'
'build_alias=x86_64-unknown-linux-gnu'
'host_alias=x86_64-unknown-linux-gnu'
'target_alias=x86_64-redhat-linux-gnu' 'CFLAGS=-O2 -g -pipe -Wall
-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector
--param=ssp-buffer-size=4 -m64 -mtune=generic -fpie' 'LDFLAGS=-pie'
'CXXFLAGS=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fpie'
--with-squid=/root/rpmbuild/BUILD/squid-3.1.10
We have Intel(R) Xeon(R) CPU E5504 @ 2.00GHz ( 4 core ).
Concurrent users are 2500-3000 users and bandwith usage is 250-300 Mbps.
We are using squid for only cache gain purpose.Does my squid configure
options are ok with my requirement or do i need to make changes with them?
Also please suggest me that my current processor is fine as per my
network traffic or suggest me better processor.
Regards,
Benjamin
