Hello i do some tests for compare two different filesystems whitch squid uses as cache_dir. Two identical machines: Intel(R) Pentium(R) 4 CPU 3.20GHz 2 GB of ram 4 SCSI 10k disks (U320) Running squid is 2.5Stable9 +epoll patch And: Machine with xfs filesystem: [14:05:04 root@w3cache1 /etc/bm]$ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 5.6G 2.5G 3.2G 44% / tmpfs 1013M 0 1013M 0% /dev/shm /dev/sda3 28G 9.6G 19G 35% /cache0 /dev/sdb1 35G 9.6G 25G 28% /cache1 /dev/sdc1 35G 9.6G 25G 28% /cache2 /dev/sdd1 35G 9.6G 25G 28% /cache3 [14:09:04 root@w3cache1 /etc/bm]$ iostat 1 -x Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.05 16.18 4.17 10.14 49.06 224.74 24.53 112.37 19.14 0.33 23.34 3.37 4.82 sdb 0.05 12.35 3.97 6.08 47.16 161.92 23.58 80.96 20.80 0.19 19.38 3.64 3.66 sdc 0.05 12.53 3.41 5.77 41.20 160.50 20.60 80.25 21.97 0.17 18.15 3.58 3.28 sdd 0.05 12.25 3.99 5.84 47.23 159.07 23.62 79.54 20.98 0.21 21.37 3.68 3.62 avg-cpu: %user %nice %sys %iowait %idle 1.50 0.00 3.00 3.00 92.50 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 6.93 0.00 79.21 0.00 39.60 0.00 11.43 0.02 3.14 3.14 2.18 sdb 0.00 0.00 4.95 0.00 39.60 0.00 19.80 0.00 8.00 0.02 3.60 3.60 1.78 sdc 0.00 0.00 1.98 2.97 15.84 127.72 7.92 63.86 29.00 0.03 6.20 5.60 2.77 sdd 0.00 0.00 4.95 0.00 63.37 0.00 31.68 0.00 12.80 0.02 4.00 4.00 1.98 avg-cpu: %user %nice %sys %iowait %idle 1.00 0.00 2.00 2.00 95.00 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 4.04 0.00 40.40 0.00 20.20 0.00 10.00 0.01 3.25 3.25 1.31 sdb 0.00 0.00 6.06 0.00 64.65 0.00 32.32 0.00 10.67 0.04 6.17 6.17 3.74 sdc 0.00 0.00 2.02 13.13 16.16 140.40 8.08 70.20 10.33 0.04 2.87 1.73 2.63 sdd 1.01 0.00 14.14 0.00 315.15 0.00 157.58 0.00 22.29 0.07 4.86 4.86 6.87 avg-cpu: %user %nice %sys %iowait %idle 1.50 0.00 1.50 3.00 94.00 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 3.00 0.00 24.00 0.00 12.00 0.00 8.00 0.04 12.67 8.33 2.50 sdb 0.00 0.00 11.00 0.00 96.00 0.00 48.00 0.00 8.73 0.03 2.64 2.64 2.90 sdc 0.00 0.00 4.00 1.00 40.00 64.00 20.00 32.00 20.80 0.03 6.20 6.20 3.10 sdd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 avg-cpu: %user %nice %sys %iowait %idle 0.50 0.00 1.00 3.00 95.50 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 1.98 0.00 15.84 0.00 7.92 0.00 8.00 0.01 5.50 5.50 1.09 sdb 0.00 0.00 9.90 0.00 95.05 0.00 47.52 0.00 9.60 0.05 5.10 5.10 5.05 sdc 0.00 0.00 5.94 6.93 79.21 64.36 39.60 32.18 11.15 0.06 4.85 4.31 5.54 sdd 0.00 0.00 1.98 0.00 15.84 0.00 7.92 0.00 8.00 0.01 6.00 6.00 1.19 avg-cpu: %user %nice %sys %iowait %idle 1.50 0.00 2.00 12.00 84.50 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 16.16 6.06 16.16 64.65 258.59 32.32 129.29 14.55 0.06 2.91 2.14 4.75 sdb 0.00 0.00 7.07 0.00 96.97 0.00 48.48 0.00 13.71 0.02 2.71 2.71 1.92 sdc 0.00 416.16 3.03 55.56 32.32 4192.93 16.16 2096.46 72.12 2.32 39.57 4.00 23.43 sdd 0.00 0.00 16.16 2.02 153.54 11.11 76.77 5.56 9.06 0.08 4.22 4.22 7.68 avg-cpu: %user %nice %sys %iowait %idle 1.00 0.00 1.49 7.46 90.05 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 14.00 0.00 144.00 0.00 72.00 0.00 10.29 0.09 6.71 4.36 6.10 sdb 0.00 0.00 8.00 0.00 80.00 0.00 40.00 0.00 10.00 0.09 11.12 7.38 5.90 sdc 0.00 0.00 2.00 2.00 32.00 128.00 16.00 64.00 40.00 0.02 3.50 4.00 1.60 sdd 0.00 0.00 13.00 0.00 160.00 0.00 80.00 0.00 12.31 0.08 6.31 5.69 7.40 vmstat 1 [14:09:43 root@w3cache1 /etc/bm]$ vmstat 1 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 0 0 0 417492 22856 747516 0 0 46 17 41 45 4 12 80 5 0 0 0 416748 22856 747924 0 0 192 172 2845 1390 1 3 91 5 0 2 0 414516 22856 748332 0 0 260 192 2638 1585 2 2 91 6 0 0 0 413804 22912 748752 0 0 308 132 2593 1184 1 2 89 8 0 0 0 412492 22936 749068 0 0 76 1047 2637 1060 2 2 94 4 0 0 0 410940 22936 749476 0 0 172 96 2700 1198 2 2 93 4 0 0 0 409908 22936 749816 0 0 180 128 2584 1168 1 2 95 3 0 0 0 409036 22936 750156 0 0 136 128 2616 1177 1 2 94 3 0 1 0 407796 22936 750564 0 0 88 64 2753 1446 1 3 94 2 0 1 0 405956 22972 751208 0 0 364 2759 2752 1665 2 2 73 24 [14:10:17 root@w3cache1 /etc/bm]$ mpstat -P ALL 1 Linux 2.6.12-rc2 (w3cache1) 04/14/05 14:10:40 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:10:41 all 0.50 0.00 0.50 1.50 0.00 0.50 97.00 2051.00 14:10:41 0 0.00 0.00 0.00 1.00 0.00 0.00 99.00 1002.00 14:10:41 1 1.00 0.00 1.00 2.00 0.00 2.00 95.00 1050.00 14:10:41 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:10:42 all 1.00 0.00 1.00 0.50 0.00 0.50 97.00 2056.44 14:10:42 0 0.00 0.00 0.99 0.00 0.00 0.00 99.01 991.09 14:10:42 1 1.98 0.00 0.99 0.99 0.00 0.99 94.06 1065.35 14:10:42 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:10:43 all 1.50 0.00 0.50 4.50 0.00 1.00 92.50 2240.40 14:10:43 0 0.00 0.00 0.00 4.04 0.00 0.00 95.96 1011.11 14:10:43 1 3.03 0.00 1.01 4.04 0.00 2.02 90.91 1229.29 14:10:43 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:10:44 all 1.00 0.00 1.00 4.48 0.00 0.50 93.03 2073.00 14:10:44 0 0.00 0.00 1.00 7.00 0.00 0.00 92.00 1001.00 14:10:44 1 2.00 0.00 1.00 2.00 1.00 1.00 94.00 1073.00 14:10:44 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:10:45 all 1.01 0.00 1.01 3.02 0.50 0.50 93.97 2130.69 14:10:45 0 0.99 0.00 0.00 5.94 0.00 0.00 93.07 991.09 14:10:45 1 1.98 0.00 1.98 0.99 0.00 0.99 93.07 1139.60 14:10:45 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:10:46 all 1.49 0.00 1.00 8.96 0.00 1.00 87.56 2155.00 14:10:46 0 1.00 0.00 1.00 12.00 0.00 0.00 86.00 1001.00 14:10:46 1 2.00 0.00 1.00 6.00 0.00 2.00 90.00 1152.00 14:10:46 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:10:47 all 1.51 0.00 1.01 12.06 0.00 1.51 83.92 2300.00 14:10:47 0 0.99 0.00 1.98 12.87 0.00 0.00 84.16 991.09 14:10:47 1 1.98 0.00 0.99 9.90 0.00 2.97 81.19 1308.91 14:10:47 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:10:48 all 1.49 0.00 0.99 2.97 0.00 0.99 93.56 2058.59 14:10:48 0 0.00 0.00 0.00 3.03 0.00 0.00 96.97 1012.12 14:10:48 1 2.02 0.00 1.01 3.03 0.00 1.01 92.93 1046.46 14:10:48 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:10:49 all 1.01 0.00 0.50 0.50 0.00 0.50 97.49 2050.50 14:10:49 0 0.00 0.00 0.99 1.98 0.00 0.00 97.03 991.09 14:10:49 1 1.98 0.00 0.99 0.00 0.99 1.98 96.04 1059.41 14:10:49 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:10:50 all 1.00 0.00 1.00 0.50 0.00 0.50 97.00 2081.63 14:10:50 0 0.00 0.00 0.00 0.00 0.00 0.00 100.00 1021.43 14:10:50 1 3.06 0.00 1.02 0.00 0.00 1.02 96.94 1060.20 Connection information for squid: Number of clients accessing cache: 0 Number of HTTP requests received: 3169978 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: 2628.8 Average ICP messages per minute since start: 0.0 Select loop called: 72487292 times, 0.998 ms avg Cache information for squid: Request Hit Ratios: 5min: 47.3%, 60min: 43.4% Byte Hit Ratios: 5min: 15.7%, 60min: 14.3% Request Memory Hit Ratios: 5min: 5.4%, 60min: 3.9% Request Disk Hit Ratios: 5min: 47.3%, 60min: 41.8% Storage Swap size: 39325972 KB Storage Mem size: 65488 KB Mean Object Size: 17.34 KB Requests given to unlinkd: 0 Median Service Times (seconds) 5 min 60 min: HTTP Requests (All): 0.07014 0.08729 Cache Misses: 0.33943 0.33943 Cache Hits: 0.00463 0.00379 Near Hits: 0.23230 0.19742 Not-Modified Replies: 0.00000 0.00000 DNS Lookups: 0.00000 0.00000 ICP Queries: 0.00000 0.00000 Resource usage for squid: UP Time: 72351.019 seconds CPU Time: 1866.556 seconds CPU Usage: 2.58% CPU Usage, 5 minute avg: 4.02% CPU Usage, 60 minute avg: 3.57% Process Data Segment Size via sbrk(): 333516 KB Maximum Resident Size: 0 KB Page faults with physical i/o: 3 Memory usage for squid via mallinfo(): Total space in arena: 333516 KB Ordinary blocks: 330624 KB 135392 blks Small blocks: 0 KB 0 blks Holding blocks: 18604 KB 13 blks Free Small blocks: 0 KB Free Ordinary blocks: 2891 KB Total in use: 349228 KB 99% Total free: 2891 KB 1% Total size: 352120 KB Memory accounted for: Total accounted: 230949 KB memPoolAlloc calls: 411187568 memPoolFree calls: 406376855 File descriptor usage for squid: Maximum number of file descriptors: 32768 Largest file desc currently in use: 1668 Number of file desc currently in use: 1423 Files queued for open: 0 Available number of file descriptors: 31345 Reserved number of file descriptors: 100 Store Disk files open: 34 Internal Data Structures: 2280637 StoreEntries 13116 StoreEntries with MemObjects 12793 Hot Object Cache Items 2268407 on-disk objects [14:12:01 root@w3cache1 /etc/bm]$ cat /proc/meminfo MemTotal: 2074192 kB MemFree: 340540 kB Buffers: 23600 kB Cached: 776488 kB SwapCached: 0 kB Active: 921584 kB Inactive: 328760 kB HighTotal: 1178496 kB HighFree: 230976 kB LowTotal: 895696 kB LowFree: 109564 kB SwapTotal: 690784 kB SwapFree: 690784 kB Dirty: 2136 kB Writeback: 0 kB Mapped: 453768 kB Slab: 473684 kB CommitLimit: 1727880 kB Committed_AS: 1080096 kB PageTables: 1440 kB VmallocTotal: 114680 kB VmallocUsed: 2844 kB VmallocChunk: 109572 kB [14:12:07 root@w3cache1 /etc/bm]$ cat /proc/net/sockstat sockets: used 1458 TCP: inuse 2692 orphan 1252 tw 576 alloc 2695 mem 50734 UDP: inuse 3 RAW: inuse 0 FRAG: inuse 0 memory 0 Machine with reiserfs filesystem: [14:14:58 root@w3cache2 /etc/bm]$ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 3.8G 2.7G 1.1G 71% / tmpfs 1013M 0 1013M 0% /dev/shm /dev/sda3 30G 9.6G 20G 33% /cache0 /dev/sdb1 35G 9.6G 25G 28% /cache1 /dev/sdc1 35G 9.6G 25G 28% /cache2 /dev/sdd1 35G 9.6G 25G 28% /cache3 iostat 1 -x Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.07 17.91 4.86 14.60 56.53 260.25 28.27 130.12 16.27 0.45 23.11 3.41 6.64 sdb 0.07 15.32 4.89 11.03 54.70 210.95 27.35 105.47 16.69 0.34 21.25 3.36 5.35 sdc 0.07 14.95 4.87 10.61 55.03 204.58 27.51 102.29 16.78 0.36 23.31 3.38 5.23 sdd 0.07 15.47 4.91 10.45 55.63 207.57 27.81 103.78 17.13 0.39 25.53 3.38 5.19 avg-cpu: %user %nice %sys %iowait %idle 1.00 0.00 1.49 6.47 91.04 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 3.00 0.00 32.00 0.00 16.00 0.00 10.67 0.01 3.67 3.67 1.10 sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdc 0.00 0.00 6.00 0.00 48.00 0.00 24.00 0.00 8.00 0.07 12.33 12.33 7.40 sdd 0.00 0.00 9.00 0.00 72.00 0.00 36.00 0.00 8.00 0.06 6.89 5.89 5.30 avg-cpu: %user %nice %sys %iowait %idle 1.00 0.00 1.49 6.97 90.55 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb 1.00 0.00 6.00 0.00 80.00 0.00 40.00 0.00 13.33 0.03 5.33 5.33 3.20 sdc 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdd 0.00 0.00 15.00 0.00 120.00 0.00 60.00 0.00 8.00 0.14 9.40 6.67 10.00 avg-cpu: %user %nice %sys %iowait %idle 0.50 0.00 1.51 8.54 89.45 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 8.08 0.00 64.65 0.00 32.32 0.00 8.00 0.05 6.75 6.75 5.45 sdb 0.00 0.00 9.09 0.00 72.73 0.00 36.36 0.00 8.00 0.03 3.22 3.22 2.93 sdc 0.00 0.00 7.07 0.00 56.57 0.00 28.28 0.00 8.00 0.03 4.86 4.86 3.43 sdd 0.00 0.00 21.21 0.00 169.70 0.00 84.85 0.00 8.00 0.07 3.10 3.10 6.57 avg-cpu: %user %nice %sys %iowait %idle 1.50 0.00 1.50 9.00 88.00 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.98 0.00 15.69 0.00 235.29 0.00 117.65 0.00 15.00 0.05 3.38 2.50 3.92 sdb 0.00 0.00 7.84 0.00 62.75 0.00 31.37 0.00 8.00 0.03 3.88 3.88 3.04 sdc 0.00 0.00 9.80 0.00 78.43 0.00 39.22 0.00 8.00 0.09 9.10 7.70 7.55 sdd 0.00 0.00 10.78 0.00 86.27 0.00 43.14 0.00 8.00 0.03 2.82 2.82 3.04 avg-cpu: %user %nice %sys %iowait %idle 1.50 0.00 2.00 8.00 88.50 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 85.15 0.00 61.39 0.00 1172.28 0.00 586.14 19.10 0.31 5.02 1.56 9.60 sdb 0.00 51.49 0.00 32.67 0.00 673.27 0.00 336.63 20.61 0.16 5.03 2.36 7.72 sdc 0.00 47.52 0.99 31.68 7.92 641.58 3.96 320.79 19.88 0.10 3.09 0.30 0.99 sdd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 avg-cpu: %user %nice %sys %iowait %idle 1.01 0.00 2.01 21.11 75.88 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 24.24 3.03 48.48 24.24 581.82 12.12 290.91 11.76 0.21 4.08 2.57 13.23 sdb 0.00 11.11 7.07 51.52 56.57 501.01 28.28 250.51 9.52 1.18 20.21 3.43 20.10 sdc 0.00 10.10 7.07 47.47 56.57 452.53 28.28 226.26 9.33 0.25 4.61 2.65 14.44 sdd 0.00 71.72 0.00 90.91 0.00 1301.01 0.00 650.51 14.31 0.48 5.23 1.21 11.01 [14:15:25 root@w3cache2 /etc/bm]$ vmstat 1 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 0 0 0 221364 312600 624440 0 0 27 25 15 21 5 15 72 8 0 0 0 220140 312648 624800 0 0 228 0 2559 1098 2 2 85 12 0 0 0 219164 312664 625056 0 0 56 0 2633 1038 2 2 94 4 0 0 0 219740 312704 625492 0 0 176 3796 2886 1446 2 4 52 44 0 0 0 218812 312716 625820 0 0 120 0 2506 929 0 1 93 5 0 0 0 217668 312768 626176 0 0 172 0 2678 1066 1 2 87 9 0 0 0 217692 312796 626624 0 0 156 0 2509 1105 1 1 88 10 0 0 0 216764 312840 626988 0 0 204 0 2802 1537 2 2 85 11 0 1 0 216532 312864 627372 0 0 112 1128 2718 1184 2 2 82 14 0 0 0 215676 312892 627616 0 0 40 1820 3011 1213 1 2 75 22 [14:15:57 root@w3cache2 /etc/bm]$ mpstat -P ALL 1 Linux 2.6.12-rc2 (w3cache2) 04/14/05 14:16:18 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:16:19 all 1.49 0.00 0.50 0.00 0.00 0.50 97.51 2549.00 14:16:19 0 0.00 0.00 0.00 0.00 0.00 0.00 100.00 1001.00 14:16:19 1 3.00 0.00 1.00 0.00 0.00 1.00 96.00 1546.00 14:16:19 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:16:20 all 1.00 0.00 1.00 1.00 0.00 0.50 96.50 2633.00 14:16:20 0 0.00 0.00 0.00 2.00 0.00 0.00 98.00 1001.00 14:16:20 1 2.00 0.00 1.00 0.00 0.00 1.00 95.00 1632.00 14:16:20 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:16:21 all 2.02 0.00 1.01 5.05 0.00 0.51 91.41 2680.00 14:16:21 0 0.00 0.00 1.00 2.00 0.00 0.00 97.00 1001.00 14:16:21 1 4.00 0.00 2.00 9.00 0.00 2.00 84.00 1679.00 14:16:21 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:16:22 all 1.49 0.00 0.99 4.95 0.00 1.49 91.09 2530.69 14:16:22 0 0.99 0.00 0.00 6.93 0.00 0.00 92.08 991.09 14:16:22 1 2.97 0.00 0.99 1.98 0.00 1.98 90.10 1540.59 14:16:22 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:16:23 all 1.00 0.00 1.00 14.00 0.50 1.50 82.00 2821.00 14:16:23 0 0.00 0.00 1.00 10.00 0.00 0.00 89.00 1001.00 14:16:23 1 1.00 0.00 1.00 19.00 1.00 3.00 76.00 1819.00 14:16:23 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:16:24 all 1.51 0.00 2.01 27.64 0.00 0.50 68.34 2902.00 14:16:24 0 0.00 0.00 0.00 16.00 0.00 0.00 84.00 1001.00 14:16:24 1 3.00 0.00 5.00 39.00 0.00 2.00 52.00 1902.00 14:16:24 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:16:25 all 1.00 0.00 1.00 11.00 0.00 1.00 86.00 2599.00 14:16:25 0 1.00 0.00 1.00 15.00 0.00 0.00 83.00 1001.00 14:16:25 1 2.00 0.00 1.00 6.00 1.00 2.00 88.00 1597.00 14:16:25 CPU %user %nice %system %iowait %irq %soft %idle intr/s 14:16:26 all 1.50 0.00 1.00 14.00 0.50 1.00 82.00 2806.06 14:16:26 0 0.00 0.00 0.00 23.23 0.00 0.00 76.77 1011.11 14:16:26 1 3.03 0.00 2.02 5.05 0.00 1.01 89.90 1794.95 Connection information for squid: Number of clients accessing cache: 0 Number of HTTP requests received: 3718206 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: 2770.8 Average ICP messages per minute since start: 0.0 Select loop called: 78572305 times, 1.025 ms avg Cache information for squid: Request Hit Ratios: 5min: 51.2%, 60min: 46.9% Byte Hit Ratios: 5min: 12.2%, 60min: 14.5% Request Memory Hit Ratios: 5min: 3.5%, 60min: 1.8% Request Disk Hit Ratios: 5min: 42.2%, 60min: 37.5% Storage Swap size: 39177764 KB Storage Mem size: 65428 KB Mean Object Size: 14.67 KB Requests given to unlinkd: 0 Median Service Times (seconds) 5 min 60 min: HTTP Requests (All): 0.10857 0.09219 Cache Misses: 0.58309 0.35832 Cache Hits: 0.00000 0.00562 Near Hits: 0.58309 0.33943 Not-Modified Replies: 0.00000 0.00000 DNS Lookups: 0.00000 0.00000 ICP Queries: 0.00000 0.00000 Resource usage for squid: UP Time: 80516.091 seconds CPU Time: 2336.288 seconds CPU Usage: 2.90% CPU Usage, 5 minute avg: 3.92% CPU Usage, 60 minute avg: 3.73% Process Data Segment Size via sbrk(): 372460 KB Maximum Resident Size: 0 KB Page faults with physical i/o: 0 Memory usage for squid via mallinfo(): Total space in arena: 372460 KB Ordinary blocks: 370737 KB 15621 blks Small blocks: 0 KB 0 blks Holding blocks: 23420 KB 13 blks Free Small blocks: 0 KB Free Ordinary blocks: 1722 KB Total in use: 394157 KB 100% Total free: 1722 KB 0% Total size: 395880 KB Memory accounted for: Total accounted: 256280 KB memPoolAlloc calls: 488694647 memPoolFree calls: 483062134 File descriptor usage for squid: Maximum number of file descriptors: 32768 Largest file desc currently in use: 1721 Number of file desc currently in use: 1352 Files queued for open: 0 Available number of file descriptors: 31416 Reserved number of file descriptors: 100 Store Disk files open: 33 Internal Data Structures: 2682196 StoreEntries 13612 StoreEntries with MemObjects 13395 Hot Object Cache Items 2670776 on-disk objects [14:16:26 root@w3cache2 /etc/bm]$ cat /proc/meminfo MemTotal: 2074340 kB MemFree: 174956 kB Buffers: 315304 kB Cached: 647100 kB SwapCached: 0 kB Active: 904464 kB Inactive: 549432 kB HighTotal: 1178560 kB HighFree: 108992 kB LowTotal: 895780 kB LowFree: 65964 kB SwapTotal: 996020 kB SwapFree: 996020 kB Dirty: 4660 kB Writeback: 0 kB Mapped: 494916 kB Slab: 431456 kB CommitLimit: 2033188 kB Committed_AS: 1321792 kB PageTables: 1592 kB VmallocTotal: 114680 kB VmallocUsed: 5220 kB VmallocChunk: 109408 kB [14:17:09 root@w3cache2 /etc/bm]$ cat /proc/net/sockstat sockets: used 1337 TCP: inuse 2636 orphan 1320 tw 883 alloc 2640 mem 43256 UDP: inuse 5 RAW: inuse 0 FRAG: inuse 0 memory 0 Both squid are use aufs store algoritm. 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