Hello,
We have a Squid 3.1.23 running on a FreeBSD 8.3 (amd64)
The proxy is used to handle web access for ~2500 workstations and in
pure proxy/filter (squidGaurd) mode with no cache (all disk caching is disabled)
It's not a tranparent/intercepting proxy, just a plain explicit proxy
mode.
What we see, is that the squid process is using 100% of CPU (userland
CPU usage, not kernel) all the time. Even in late night when the whole traffic
is very minimalistic.
What I'm looking for is some advice on how to track down what is
causing this CPU misbehaviour. Maybe it's some stupid config option not
suitable for this kind of setup, maybe a bug etc.
What would be the tools/methodology that I can use to profile the
running process.
Any help/suggestion would be really appreciated.
Youssef Ghorbal
squid -v
Squid Cache: Version 3.1.23
configure options: '--with-default-user=squid' '--bindir=/usr/local/sbin'
'--sbindir=/usr/local/sbin' '--datadir=/usr/local/etc/squid'
'--libexecdir=/usr/local/libexec/squid' '--localstatedir=/var/squid'
'--sysconfdir=/usr/local/etc/squid' '--with-logdir=/var/log/squid'
'--with-pidfile=/var/run/squid/squid.pid' '--enable-removal-policies=lru heap'
'--disable-linux-netfilter' '--disable-linux-tproxy' '--disable-epoll'
'--disable-translation' '--disable-ecap' '--disable-loadable-modules'
'--enable-auth=basic digest negotiate ntlm' '--enable-basic-auth-helpers=DB
NCSA PAM MSNT SMB squid_radius_auth LDAP YP'
'--enable-digest-auth-helpers=password ldap'
'--enable-external-acl-helpers=ip_user session unix_group wbinfo_group
ldap_group' '--enable-ntlm-auth-helpers=smb_lm' '--enable-storeio=ufs diskd
aufs' '--enable-disk-io=AIO Blocking DiskDaemon DiskThreads'
'--enable-delay-pools' '--enable-icap-client' '--enable-kqueue'
'--with-large-files' '--enable-stacktraces' '--disable-optimizations'
'--prefix=/usr/local' '--mandir=/usr/local/man' '--infodir=/usr/local/info/'
'--build=amd64-portbld-freebsd8.3' 'build_alias=amd64-portbld-freebsd8.3'
'CC=cc' 'CFLAGS=-pipe -I/usr/local/include -g -g -DLDAP_DEPRECATED' 'LDFLAGS=
-L/usr/local/lib' 'CPPFLAGS=' 'CXX=c++' 'CXXFLAGS=-pipe -I/usr/local/include -g
-g -DLDAP_DEPRECATED' 'CPP=cpp'
--with-squid=/wrkdirs/usr/ports/www/squid31/work/squid-3.1.23
--enable-ltdl-convenience
