Ok, I've given up after a week and restarted squid using ufs today at 13:30 in France.
Now, MRTG graphs are showing a lower CPU usage for our squid proxy, as cachemgr.cgi (CPU Usage, 60 minute avg: 23.25%) and vmstat: > vmstat 1 10 Virtual Memory Statistics: (pagesize = 8192) procs memory pages intr cpu r w u act free wire fault cow zero react pin pout in sy cs us sy id 2 111 32 48K 1509 12K 359K 74K 145K 278 44K 0 4K 187K 4K 21 40 39 3 110 32 48K 1492 12K 5 16 18 0 28 0 3K 2K 3K 10 41 49 3 110 32 48K 1458 12K 0 0 0 0 0 0 5K 4K 4K 19 25 56 2 110 33 48K 1422 12K 0 0 0 0 0 0 4K 2K 4K 13 44 43 2 110 33 48K 1403 12K 1 0 0 0 0 0 6K 4K 5K 23 28 48 3 110 32 48K 1365 12K 0 0 1 0 0 0 5K 3K 4K 13 47 40 2 111 32 48K 1367 12K 0 0 0 0 0 0 6K 4K 6K 20 30 50 5 109 31 48K 1340 12K 0 0 0 0 0 0 6K 2K 5K 12 44 44 2 111 32 48K 1326 12K 0 0 0 0 0 0 4K 3K 5K 13 22 65 5 109 31 48K 1292 12K 0 0 0 0 0 0 6K 3K 5K 14 39 47 Curiously, top and dxsysinfo (a Dec tool) keep saying CPU load is very high: load averages: 1.39, 1.46, 1.38 14:55:52 62 processes: 1 running, 1 waiting, 14 sleeping, 46 idle CPU states: 23.7% user, 0.0% nice, 65.4% system, 10.7% idle Memory: Real: 297M/489M act/tot Virtual: 1500M use/tot Free: 9200K PID USERNAME PRI NICE SIZE RES STATE TIME CPU COMMAND 3557 root 42 0 154M 151M WAIT 17:25 20.20% squid 3578 squid 42 0 1776K 196K sleep 0:20 0.40% unlinkd 3645 root 44 0 8920K 6086K run 0:00 0.20% top ... Who's right ? Any advice ? My squid is really slow. > I've upgraded from squid-2.5.STABLE4 to squid-2.5.STABLE5 on a > Tru64Unix 5.1 alpha XP1000. > > First I've started 2.5.ST5 Monday at noon using ufs. > Then I've restarted 2.5.ST5 Tuesday at noon using diskd. > > Just see at: > http://www.univ-st-etienne.fr/criter/stats/mrtg/cpu.janon.html > > CPU load is, say, twice the load of squid before using diskd. > Also, nightly CPU load is really higher than squid-2.5.ST4 > > It seems squid is using CPU, not diskd: > janon/root> ps aux > USER PID %CPU %MEM VSZ RSS TTY S STARTED TIME COMMAND > squid 3931 77.2 34.5 181M 176M ?? R Mar 09 10:20:10 (squid) > root 0 17.3 5.3 643M 27M ?? R < Mar 08 08:55:50 [kernel > idle] > squid 3953 1.5 0.1 2.63M 480K ?? U Mar 09 18:45.20 diskd 40 > 25344 4025345 4025346 > > >From cachemgr.cgi: > CPU Usage, 5 minute avg: 77.92% > CPU Usage, 60 minute avg: 76.15% > > I thought diskd would help our squid cache under heavy load > (2,000+ clients, more than 60 requests/second, very long answers) > > Any idea ? > Thanks in advance. -- _________________________________________________________________ Magali BERNARD - CRITeR - Universit� Jean Monnet de Saint-Etienne 23 rue du Dr Paul Michelon - 42023 St-Etienne Cedex 2 - FRANCE Tel: 04.77.48.50.62
