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@test-ha SPECS]# arch x86_64 [root@test-ha SPECS]# cat /etc/redhat-release CentOS release 5.4 (Final) [root@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.
