>-----Message d'origine----- >De : ferret@xxxxxxx [mailto:ferret@xxxxxxx] De la part de Chris Robertson >Envoyé : 25 mars 2008 15:41 >À : squid-users@xxxxxxxxxxxxxxx >Objet : Re: TCP_HIT and TCP_MISS > >Guillaume Chartrand wrote: >>> -----Message d'origine----- >>> De : ferret@xxxxxxx [mailto:ferret@xxxxxxx] De la part de Chris Robertson >>> Envoyé : 20 mars 2008 21:21 >>> À : squid-users@xxxxxxxxxxxxxxx >>> Objet : Re: TCP_HIT and TCP_MISS >>> >>> Guillaume Chartrand wrote: >>> >>>> I try the solution on the other post to increase file descriptor >>>> I have 4096 when I do a ulimit -n >>>> I recompile squid >>>> Here what I have when I run squid -v >>>> Squid Cache: Version 2.6.STABLE12 >>>> configure options: >>>> >>>> >>> No configure options at all? The default (last I checked) did not allow >>> for support of aufs cache dirs. >>> >> >> >> I've just run ./configure >> Without no other option. Now I look for enable aufs cache dir but I didn't find with option I need to enable. The only >option who's near that it's >> --with-aufs-threads=N_THREADS >> >> If it's that option, how many threads should I put. >> >> > >Personally I use "--enable-storeio=aufs,null,ufs", with a few other >options (with-large-files, enable-snmp, >enable-removal-policies=heap,lru). There is a message in the archives > (somewhere, I can't find it right now) where Henrik explains that ufs is >actually better for a lightly loaded cache (less overhead), but the >blocking becomes a factor as the requests per second rise. For me it >has become reflexive to suggest using aufs. >>>> 2008/03/18 09:11:01| NOTICE: no explicit transparent proxy support enabled. Assuming getsockname() works on >>>intercepted conne >>>> ctions >>>> 2008/03/18 09:11:01| WARNING: Forwarding loop detected for: >>>> Client: 172.20.20.18 http_port: 172.20.20.18:3128 >>>> GET http://172.20.20.18:3128/design/motherbd/software/ias/updates.htm HTTP/1.0 >>>> Via: 1.0 squid.collanaud.qc.ca:3128 (squid/2.6.STABLE12) >>>> X-Forwarded-For: 172.21.132.93 >>>> Host: 172.20.20.18:3128 >>>> Cache-Control: max-age=259200 >>>> Connection: keep-alive >>>> >>>> >>>> >> >> >>> So your router is intercepting Squid's traffic and redirecting it back >>> to Squid. That's not so good. In a big way. >>> > >This was not addressed in your reply. Hopefully it was addressed on >your network. I feel it's the real issue. >>>> And here is some of my squid.conf >>>> # Squid normally listens to port 3128 >>>> #http_port 3128 >>>> http_port 3128 transparent >>>> #Default: >>>> # cache_mem 8 MB >>>> cache_mem 512 MB >>>> #Default: >>>> # maximum_object_size 4096 KB >>>> maximum_object_size 25600 KB#Default: >>>> cache_dir ufs /usr/local/squid/var/cache 2500 16 256 # this one is a symlink to another disk >>>> >>>> >> >> >>> A symlink, or is the other disk mounted here. No matter, but you should >>> probably be using aufs, which you will have to compile support for. >>> >> >> It's a symlink only. >> >Interesting. Any reason for using a symlink instead of a mount point? I deleted the symlink and make a mount point >> >>>> cache_dir ufs /usr/local/squid/var/cache2 2500 16 256 >>>> >>>> >> >> >>> So how much memory does this box have? You've dedicated about a GB of >>> RAM for Squid alone (512 cache_mem + (5GB of cache_dir * 0.1)). >>> >> >> The machine is on VMware virtual machine and have 2 disk of 40GB each and 1GB of RAM >> >Ugh. My calculation was off by an order of magnitude. 5GB of cache >will only take (on average) 50MB of memory. See >http://wiki.squid-cache.org/SquidFaq/SquidMemory for more details. But >be aware, squid does not put objects from the disk cache BACK into >memory. Only objects fetched from the net are put in the memory cache. I've downgrade my cache_mem to 100M cache_mem 100 MB I've modified the cache_dir cache_dir aufs /usr/local/squid/var/cache 2500 16 256 cache_dir aufs /usr/local/squid/var/cache2 2500 16 256 I've make a make clean on my src dir I've deleted all file and directory in my cache directory I make my mount point of my second disk to /usr/local/squid/var/cache2 and deleted my symlink to have direct access I recompile with this line ./configure --enable-storeio=aufs,null,ufs --with-large-files Make Make install I rerun squid with option -z to remake my directory After I run squid normally It's about 12 hours and that squid running and I don't have TCP_HIT I try to access a gif with 2 different browser on the same machine and here What I got in my access.log 1206545448.392 6413 172.20.51.11 TCP_MISS/200 596 GET http://www.nu.nl/img/balkje.gif - DIRECT/62.69.179.208 image/gif 1206545708.067 252 172.20.51.11 TCP_MISS/200 596 GET http://www.nu.nl/img/balkje.gif - DIRECT/62.69.184.229 image/gif So I don't know again what I misconfigured Thank
