> I appreciate your response. I don't believe it's a file system issue, I've > tried troubleshooting that for several weeks. Originally, I was using 16 > 256 (the default) as directory layout. I've tried using ext4, reiser (my > favorite filesystem) and now it's on btrfs. I also have the filesystem > mounted with noatime. When I was using reiser, I had disabled tail > packing as well. As you can see, I'm using aufs, but I've also tried > diskd. > > The IP tables NAT/DNAT stuff happens at my router. See this DD-WRT wiki > article for how it's done > (http://www.dd-wrt.com/wiki/index.php/Transparent_Proxy), I actually wrote > the section on multiple hosts can bypass the proxy. Either way, it's not a > router issue. If I set my browser to the use the proxy directly, the > delays still happen 99% of the time. > > Originally,I was using dans with antivirus. But the delays have gotten to > be horrible. I went back to a standard squid setup to try to resolve the > problem. At this point, I simply want to get squid working because a lot > of the sites we visit continously may benefit from cacheing (news sites > with lots of graphics, etc). Once I get this problem resolved, I'll go > back to using dans w/ antivirus. > > 10.0.0.254 (the squid host) is excluded from the IP tables rules on > DD-WRT, along with my Xbox 360, my BluRay player, my HD-DVD player and my > DirecTV receiver. > > The three DNS servers specified in the squid.conf all resolve names > properly and are open to the squid host. > > Thanks > Doug Eubanks > admin@xxxxxxxxxxxx > 919-201-8750 Strange. What is the output of "squid -v" and "squidclient mgr:info" (AKA info cachmgr page)? Amos > > _____ > From: Amos Jeffries [mailto:squid3@xxxxxxxxxxxxx] > To: admin@xxxxxxxxxxxx > Cc: squid-users@xxxxxxxxxxxxxxx > Sent: Mon, 18 May 2009 14:55:39 +0000 > Subject: Re: Transparent Squid Stalls For Up To Two Minutes > > Doug Eubanks wrote: >> I'm having an intermittent squid issue. It's plagued me with CentOS 5.x, >> Fedora 6, and now Fedora 11 (all using the RPM build that came with the >> OS). >> >> My DD-WRT router forwards all of my outgoing port 80 requests to my >> transparent proxy using IP tables. For some reason, squid will hang when >> opening a URL for up to two minutes. It doesn't always happen and >> sometimes restarting squid will correct the problem (for a while). The >> system is pretty hefty 3ghz P4 with 2G of RAM with a SATA II drive. That >> should be plenty for a small home network of about 10 clients. >> >> When I test DNS lookups from the host, requests are returned within less >> than a second. I'm pretty sure that's not the problem. >> >> Here is my squid.conf, any input would be greatly appreciated! >> >> acl manager proto cache_object >> acl localhost src 127.0.0.1/32 >> acl to_localhost dst 127.0.0.0/8 >> 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 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 >> acl CONNECT method CONNECT >> http_access allow manager localhost >> http_access deny manager >> http_access allow localnet >> http_access deny !Safe_ports >> http_access deny CONNECT !SSL_ports >> http_access allow localnet >> http_access allow localhost >> http_access deny all >> htcp_access allow localnet >> htcp_access deny all >> http_port 3128 transparent > > Is the NAT / REDIRECT/DNAT happening on the Squid box? > It needs to. > >> hierarchy_stoplist cgi-bin ? >> cache_mem 32 MB >> maximum_object_size_in_memory 128 KB >> cache_replacement_policy heap LRU >> cache_dir aufs /var/spool/squid 4096 8 16 > > 4GB of objects under 512KB small (avg set at 64KB later), using only an > 8x16 inode array. You may have a FS overload problem. > > Also, Squid 'pulses' cache garbage collection one directory at a time. > Very large amounts of files in any one directory can slow things down a > lot at random times. > > It's generally better to increase the L1/L2 numbers from default as the > cache gets bigger. > >> max_open_disk_fds 0 >> minimum_object_size 0 KB >> maximum_object_size 512 KB >> access_log /var/log/squid/access.log squid >> refresh_pattern ^ftp: 1440 20% 10080 >> refresh_pattern ^gopher: 1440 0% 1440 >> refresh_pattern (cgi-bin|\?) 0 0% 0 >> refresh_pattern . 0 20% 4320 >> visible_hostname doug-linux.dougware.net >> unique_hostname doug-linux.dougware.net >> coredump_dir /var/spool/squid >> cache_mgr admin@xxxxxxxxxxxx >> dns_nameservers 10.0.0.254 10.0.0.253 69.197.163.239 >> store_avg_object_size 64 KB >> memory_replacement_policy heap LRU >> tcp_outgoing_address 10.0.0.254 >> udp_outgoing_address 10.0.0.254 > > Does 10.0.0.254 port 53 have access to ALL the DNS servers: 10.0.0.254 > 10.0.0.253 69.197.163.239 > > Are you excluding 10.0.0.254 from the interception at the DD-WRT? > > Amos > -- > Please be using > Current Stable Squid 2.7.STABLE6 or 3.0.STABLE15 > Current Beta Squid 3.1.0.7 >
