I am using Squid version 3.1.20 running on Intel I7 processor with 16GB RAM. Even on connecting a single client I could able to reproduce this problem.
2015/10/22 20:34:23.146| ipcache_nbgethostbyname: Name 'mail.com'. <<<<<<<<<<<<<<<<<<<<<<<<<<<< DNS start time 2015/10/22 20:34:23.146| ipcache_nbgethostbyname: MISS for 'mail.com' 2015/10/22 20:34:23.146| cbdataLock: 0x7f9c3f4ca628=2 2015/10/22 20:34:23.146| idnsALookup: buf is 26 bytes for mail.com, id = 0x7a4f 2015/10/22 20:34:23.146| cbdataLock: 0x7f9c3f46df28=1 2015/10/22 20:34:23.146| comm_udp_sendto: Attempt to send UDP packet to 8.8.8.8:53 using FD 8 using Port 46787 2015/10/22 20:34:23.146| event.cc(343) schedule: schedule: Adding 'idnsCheckQueue', in 1.00 seconds 2015/10/22 20:34:23.146| StoreEntry::unlock: key '0F71D6DA8407C509D35DA6ADB5BD52BD' count=2 2015/10/22 20:34:24.114| idnsRead: FD 8: received 84 bytes from 8.8.8.8:53 2015/10/22 20:34:24.114| idnsGrokReply: ID 0x7a4f, 0 answers 2015/10/22 20:34:24.114| idnsGrokReply: mail.com has no AAAA records. Looking up A record instead. 2015/10/22 20:34:24.114| comm_udp_sendto: Attempt to send UDP packet to 8.8.8.8:53 using FD 8 using Port 46787 2015/10/22 20:34:24.114| comm_udp_recvfrom: FD 8 from 8.8.8.8:53 2015/10/22 20:34:25.064| idnsRead: FD 8: received 226 bytes from 8.8.8.8:53 2015/10/22 20:34:25.064| idnsGrokReply: ID 0xe9c1, 1 answers 2015/10/22 20:34:25.065| dns_internal.cc(1152) idnsGrokReply: Sending 1 DNS results to caller. <<<<<<<<<<<<<<<<<<<<<<<<<<< DNS end time It looks like almost 2 seconds spent in resolving DNS for an URL. I guess it could be the reason. Also it tries for IPv6 first even i configured dns_v4_first option. It looks bad. Suppose if an URL has many embedded pages a delay of 2 second is added to total page load time for each embedded page request. Regards, Saravanan N On Thu, Oct 22, 2015 at 3:54 PM, Eliezer Croitoru <elie...@ngtech.co.il> wrote: > What version of squid are you using now? > Squid 3.1.20 is very old and it is recommended to use newer versions. > If you are having specific troubles I think you figure out the issues > pretty fast. > What hardware are you using for you squid? is it a VM? RAM? CPU?Disk? > How many clients? Have you used the squid cache manager interface? > > My first suggestion it to try and use squid 3.4.14 just to make sure you > are on something more current then 3.1.20. > > Eliezer > > On 22/10/2015 21:47, SaRaVanAn wrote: > >> Hi , >> we have been using squid 3.1.20 comes with debian wheezy 7. We could see >> there is a peformance hit in http traffic when we use Squid. >> >> For each HTTP GET request coming from client to proxy server, Squid takes >> nearly 2 seconds to generate HTTP GET in order to establish a connection >> with server. >> >> There is always a ~2 second delay between the request coming to our system >> and going out of Squid. Suppose if a page has lot of embedded URL's it's >> taking more time with squid in place.Suppose If I disable squid the page >> loads very fast in client browser. >> >> What could be the reason? Do I need to tweak any configuration for this? >> The first page request always loads slow with Squid. >> >> >> *Configuration*http_port 3128 >> >> http_port 3129 tproxy >> http_port 80 accel defaultsite=example.com >> acl manager proto cache_object >> acl localhost src 127.0.0.1/32 ::1 >> acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1 >> acl QUERY urlpath_regex cgi-bin \? >> cache deny QUERY >> acl denied_status_404 http_status 404 >> deny_info http://example.com/ denied_status_404 >> http_reply_access deny denied_status_404 >> acl denied_status_503 http_status 503 >> deny_info http://example.com denied_status_503 >> http_reply_access deny denied_status_503 >> acl SSL_ports port 443 >> acl Safe_ports port 80 >> acl Safe_ports port 21 >> acl Safe_ports port 443 >> acl Safe_ports port 70 >> acl Safe_ports port 210 >> acl Safe_ports port 1025-65535 >> acl Safe_ports port 280 >> acl Safe_ports port 488 >> acl Safe_ports port 591 >> acl Safe_ports port 777 >> acl CONNECT method CONNECT >> acl PURGE method PURGE >> http_access allow PURGE localhost >> http_access deny PURGE >> http_access allow manager localhost >> http_access deny manager >> http_access deny !Safe_ports >> http_access deny CONNECT all >> http_access allow all >> icp_access allow all >> tcp_outgoing_address x.y.z.5 >> acl VIDEO url_regex ^http://example\.examplevideo\.com >> cache allow VIDEO >> cache_mem 100 mb >> maximum_object_size_in_memory 10 kb >> memory_replacement_policy heap LFUDA >> cache_replacement_policy heap LFUDA >> cache_dir aufs //var/logs/cache 6144 16 256 >> store_dir_select_algorithm round-robin >> maximum_object_size 51200 kb >> cache_swap_low 70 >> cache_swap_high 80 >> access_log //var/logs/access.log squid >> cache_store_log none >> logfile_rotate 1 >> mime_table //var/opt/abs/config/acpu/mime.conf >> pid_filename /var/run/squid3.pid >> strip_query_terms off >> cache_log //var/logs/cache.log >> coredump_dir //var/cache >> acl apache rep_header server ^apache >> refresh_pattern -i ^http://.wsj./.* 10 200% 10 override-expire >> override-lastmod reload-into-ims ignore-reload >> refresh_pattern -i \.(gif|png|jpg|jpeg|ico)$ 480 100% 480 override-expire >> override-lastmod reload-into-ims >> refresh_pattern -i \.(htm|html|js|css)$ 480 100% 480 override-expire >> override-lastmod reload-into-ims >> 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 >> quick_abort_min 0 kb >> quick_abort_max 0 kb >> negative_ttl 1 minutes >> positive_dns_ttl 1800 seconds >> store_objects_per_bucket 100 >> forward_timeout 2 minutes >> shutdown_lifetime 2 seconds >> visible_hostname x.y.z.3 >> server_persistent_connections off >> dns_nameservers x.y.z.1 x.y.z.2 >> ipcache_size 8192 >> fqdncache_size 8192 >> memory_pools off >> >> Regards, >> >> Saravanan N >> >> >> >> _______________________________________________ >> squid-users mailing list >> squid-users@lists.squid-cache.org >> http://lists.squid-cache.org/listinfo/squid-users >> >> > _______________________________________________ > squid-users mailing list > squid-users@lists.squid-cache.org > http://lists.squid-cache.org/listinfo/squid-users >
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