Hi Chris, > > Also, i have: > > Last 5 minutes: > > client_http.requests = 2.723098/sec > > client_http.hits = 0.779933/sec > > Well, the box is not being stressed... What is the output of "hdparm -t > /dev/sda" (I think SATA shows up as SCSI in linux)? # cat /proc/partitions major minor #blocks name 8 0 120059840 sda 8 1 104391 sda1 8 2 1 sda2 8 5 2008093 sda5 8 6 117941166 sda6 # hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 170 MB in 3.03 seconds = 56.15 MB/sec [root@ns1 ~]# hdparm -tT /dev/sda # hdparm -tT /dev/sda /dev/sda: Timing cached reads: 3792 MB in 2.00 seconds = 1896.29 MB/sec Timing buffered disk reads: 156 MB in 3.02 seconds = 51.73 MB/sec [root@ns1 ~]# I am using 2 sata HDD drives mounted in RAID1 hardware controller (3ware - 2 ports) Timings above are ok or not? > If I set the BIOS to > use the SATA drives in "Enhanced" (both SATA and PATA drives are available) > or "SATA Only", I get very poor performance. Only if I set them as > "Combined" (the SATA drives "act" like a PATA channel) do I get decent > performance. > I can't access BIOS settings now (require to stop our services)... Only tonight, when our network will be free... I will do it only if speed above is poor .... > I see nothing in here that would be causing the horrid performance that you > are reporting. What do the Median Service Times (under the General Runtime > Info) look like? I increased cache_mem from 32 MB to 256MB and nothing seems to change my life ... as you said, the box is not being stressed anyway.... Now, I have only 138 clients accessing cache and squid is working worse then a dial-up connection. Here comes General Runtime Info including Median Service Times too... Connection information for squid: Number of clients accessing cache: 135 Number of HTTP requests received: 82681 Number of ICP messages received: 0 Number of ICP messages sent: 0 Number of queued ICP replies: 0 Request failure ratio: 0.00 Average HTTP requests per minute since start: 62.4 Average ICP messages per minute since start: 0.0 Select loop called: 22219278 times, 3.579 ms avg Cache information for squid: Request Hit Ratios: 5min: 34.3%, 60min: 38.8% Byte Hit Ratios: 5min: 4.4%, 60min: 24.5% Request Memory Hit Ratios: 5min: 1.0%, 60min: 5.9% Request Disk Hit Ratios: 5min: 39.3%, 60min: 32.4% Storage Swap size: 4053340 KB Storage Mem size: 43480 KB Mean Object Size: 17.73 KB Requests given to unlinkd: 0 Median Service Times (seconds) 5 min 60 min: HTTP Requests (All): 0.01955 0.02317 Cache Misses: 0.44492 0.35832 Cache Hits: 0.00865 0.01035 Near Hits: 0.28853 0.22004 Not-Modified Replies: 0.01164 0.01035 DNS Lookups: 0.08717 0.16304 ICP Queries: 0.00000 0.00000 Resource usage for squid: UP Time: 79515.851 seconds CPU Time: 387.250 seconds CPU Usage: 0.49% CPU Usage, 5 minute avg: 0.24% CPU Usage, 60 minute avg: 0.17% Process Data Segment Size via sbrk(): 79920 KB Maximum Resident Size: 0 KB Page faults with physical i/o: 0 Memory usage for squid via mallinfo(): Total space in arena: 79920 KB Ordinary blocks: 79544 KB 3201 blks Small blocks: 0 KB 0 blks Holding blocks: 1784 KB 3 blks Free Small blocks: 0 KB Free Ordinary blocks: 375 KB Total in use: 81328 KB 100% Total free: 375 KB 0% Total size: 81704 KB Memory accounted for: Total accounted: 65164 KB memPoolAlloc calls: 11051188 memPoolFree calls: 10437330 File descriptor usage for squid: Maximum number of file descriptors: 1024 Largest file desc currently in use: 140 Number of file desc currently in use: 130 Files queued for open: 0 Available number of file descriptors: 894 Reserved number of file descriptors: 100 Store Disk files open: 0 Internal Data Structures: 228996 StoreEntries 6823 StoreEntries with MemObjects 6819 Hot Object Cache Items 228639 on-disk objects Alex
