Hello all.
Squid 3.1.1 utilizing cpu (near 100%) when client using CONNECT & hitting
delay pool.
How to reproduce:
1. Install squid 3.1.1
2. Add delay pool to specific host.
3. Using CONNECT to download any file from this host.
4. See cpu utilization on proxy when download in progress.
Below is my config:
[config_start]
cache_effective_user nobody
access_log /var/log/squid/access.log
cache_store_log /var/log/squid/store.log
cache_log /var/log/squid/cache.log
debug_options ALL,2
#
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl localhost src ::1/128
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32
acl to_localhost dst ::1/128
# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 10.0.0.0/8 # RFC1918 possible internal network
acl localnet src 172.16.0.0/12 # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
acl localnet src fc00::/7 # RFC 4193 local private network range
acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines
#tested machine
acl im src 172.16.7.101
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
#
# Recommended minimum Access Permission configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager
# Deny requests to certain unsafe ports
http_access deny !Safe_ports
# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost
#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#
http_access allow im
# And finally deny all other access to this proxy
http_access deny all
# Squid normally listens to port 3128
http_port 3128
# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?
# Uncomment and adjust the following to add a disk cache directory.
cache_dir ufs /var/cache/squid 100 16 256
# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid
# Add any of your own refresh_pattern entries above these.
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320
#delay pool for "im" acl
delay_pools 1
delay_class 1 1
delay_access 1 allow im
delay_access 1 deny all
delay_parameters 1 64000/64000
[config_end]
top reports:
87.7 4.5 0:24.82 squid
87.7% is the cpu utilization here
cache.log:
2010/04/07 14:52:33.009| The request CONNECT www.squid-cache.org:80 is
ALLOWED, because it matched 'im'
2010/04/07 14:52:33.009| client_side_request.cc(547) clientAccessCheck2: No
adapted_http_access configuration.
2010/04/07 14:52:33.009| The request CONNECT www.squid-cache.org:80 is
ALLOWED, because it matched 'im'
2010/04/07 14:53:06.302| commHandleWrite: FD 16: write failure: (104)
Connection reset by peer.
2010/04/07 14:53:06.302| TunnelStateData::Connection::error: FD 16: read/write
failure: (104) Connection reset by peer
2010/04/07 14:53:06.303| ConnStateData::swanSong: FD 16
Some additional info about system:
[root_at_test-ha SPECS]# arch
x86_64
[root_at_test-ha SPECS]# cat /etc/redhat-release
CentOS release 5.4 (Final)
[root_at_test-ha SPECS]# squid -v
Squid Cache: Version 3.1.1
configure options: '--build=x86_64-redhat-linux-gnu'
'--host=x86_64-redhat-linux-gnu'
'--target=x86_64-redhat-linux-gnu'
'--program-prefix='
'--prefix=/usr'
'--exec-prefix=/usr'
'--bindir=/usr/bin'
'--sbindir=/usr/sbin'
'--sysconfdir=/etc'
'--includedir=/usr/include'
'--libdir=/usr/lib64'
'--libexecdir=/usr/libexec'
'--sharedstatedir=/usr/com'
'--mandir=/usr/share/man'
'--infodir=/usr/share/info'
'--exec_prefix=/usr'
'--bindir=/usr/sbin'
'--libexecdir=/usr/lib64/squid'
'--localstatedir=/var'
'--datadir=/usr/share'
'--sysconfdir=/etc/squid'
'--disable-dependency-tracking'
'--enable-arp-acl'
'--enable-auth=basic,digest,ntlm,negotiate'
'--enable-basic-auth-helpers=LDAP,MSNT,NCSA,PAM,SMB,YP,getpwnam,multi-domain-NTLM,SASL'
'--enable-negotiate-auth-helpers=squid_kerb_auth'
'--enable-cache-digests'
'--enable-cachemgr-hostname=localhost'
'--enable-delay-pools'
'--enable-digest-auth-helpers=password'
'--enable-epoll'
'--enable-esi'
'--enable-external-acl-helpers=ip_user,ldap_group,unix_group,wbinfo_group'
'--enable-icap-client' '--enable-ident-lookups'
'--enable-linux-netfilter'
'--enable-ntlm-auth-helpers=smb_lm,fakeauth'
'--enable-referer-log'
'--enable-removal-policies=heap,lru'
'--enable-snmp'
'--enable-ssl'
'--enable-storeio=aufs,diskd,ufs'
'--enable-useragent-log'
'--enable-wccpv2'
'--with-aio'
'--with-default-user=squid'
'--with-filedescriptors=16384'
'--with-dl'
'--with-openssl=/usr/kerberos'
'--with-pthreads'
'build_alias=x86_64-redhat-linux-gnu'
'host_alias=x86_64-redhat-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'
'CXXFLAGS=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic'
'FFLAGS=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic'
--with-squid=/usr/src/redhat/BUILD/squid-3.1.1
--enable-ltdl-convenience
Please, verify this bug and confirm it. After this i will open it on
bugs.squid-cache.org. Maybe it's already known issue ? I will provide any
additional info, if needed.
Thanks.
Received on Wed Apr 07 2010 - 11:05:50 MDT
This archive was generated by hypermail 2.2.0 : Wed Apr 07 2010 - 12:00:03 MDT