Marcos, What OS are you running squid on? According to the Docs, squid cannot take advantage of an SMP kernel but there is a reference about having multiple instances of squid running, However some OS's are very specific on how they handle processes, a little more information about your setup would be helpful Saul -----Original Message----- From: Marcos Camões Bourgeaiseau [mailto:marcoscamoes@xxxxxxxxxxxxx] Sent: Tuesday, March 11, 2008 3:21 PM To: squid-users@xxxxxxxxxxxxxxx Subject: Multi processors I have compiled squid with those options below: squid -v Squid Cache: Version 2.5.STABLE12 configure options: --sysconfdir=/etc/squid --enable-storeio=aufs,coss,diskd,ufs --enable-poll --enable-delay-pools --enable-linux-netfilter --enable-htcp --enable-carp --with-pthreads --enable-underscores --enable-external --enable-arp-acl --with-maxfd=16384 --enable-async-io=50 --enable-snmp It runs in a machine with 4 Itel Xeon processors, but squid no matter how many instances i start, uses only one processor, and my other three processors stay idle. My Squid.conf is this: (I have cutted-out my acls and http_acces) http_port 8080 hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin aspx \? no_cache deny QUERY # OPTIONS WHICH AFFECT THE CACHE SIZE cache_mem 3072000 KB maximum_object_size 20000 KB minimum_object_size 0 KB maximum_object_size_in_memory 4 MB cache_replacement_policy lru memory_replacement_policy lru # LOGFILE PATHNAMES AND CACHE DIRECTORIES cache_dir ufs /var/spool/squid 5000 16 256 cache_access_log /var/log/squid/access.log cache_log none cache_store_log none pid_filename /var/run/squid.pid # OPTIONS FOR EXTERNAL SUPPORT PROGRAMS ftp_list_width 32 ftp_passive on auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off # OPTIONS FOR TUNING THE CACHE refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 quick_abort_pct 98 # MISCELLANEOUS append_domain .rio.rj.gov.br memory_pools_limit 50 MB log_icp_queries off snmp_port 3401 Does anyone have an idea? I have looked up in this list old mails, and have not found anything. Thanks a lot, -- Marcos Camões Bourgeaiseau - KIKO ================================================ e-mail pessoal: mcbourgeaiseau@xxxxxxxxx e-mail institucional: marcoscamoes@xxxxxxxxxxxxx No virus found in this incoming message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1325 - Release Date: 3/11/2008 1:41 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1325 - Release Date: 3/11/2008 1:41 PM