SQUID的info信息，命中率太低

kevinadmin

1. 我的系统是FreeBSD的，squid2.6 反向代理

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1. 
   
2. HTTP/1.0 200 OK
   
3. Server: squid/2.6.STABLE16+ICAP
   
4. Date: Wed, 23 Jul 2008 08:23:15 GMT
   
5. Content-Type: text/plain
   
6. Expires: Wed, 23 Jul 2008 08:23:15 GMT
   
7. Last-Modified: Wed, 23 Jul 2008 08:23:15 GMT
   
8. X-Cache: MISS from image.bade.com
   
9. X-Cache-Lookup: MISS from image.bade.com:80
   
10. Via: 1.0 image.bade.com:80 (squid/2.6.STABLE16+ICAP)
    
11. Connection: close
    
12. 
    
13. Squid Object Cache: Version 2.6.STABLE16+ICAP
    
14. Start Time:     Wed, 23 Jul 2008 08:20:04 GMT
    
15. Current Time:   Wed, 23 Jul 2008 08:23:15 GMT
    
16. Connection information for squid:
    
17.         Number of clients accessing cache:      136
    
18.         Number of HTTP requests received:       1506
    
19.         Number of ICP messages received:        0
    
20.         Number of ICP messages sent:    0
    
21.         Number of queued ICP replies:   0
    
22.         Number of HTCP messages received:       0
    
23.         Number of HTCP messages sent:   0
    
24.         Request failure ratio:   0.00
    
25.         Average HTTP requests per minute since start:   473.1
    
26.         Average ICP messages per minute since start:    0.0
    
27.         Select loop called: 68234 times, 2.799 ms avg
    
28. Cache information for squid:
    
29.         Request Hit Ratios:     5min: 58.2%, 60min: 58.2%
    
30.         Byte Hit Ratios:        5min: -7.4%, 60min: -7.4%
    
31.         Request Memory Hit Ratios:      5min: 3.4%, 60min: 3.4%
    
32.         Request Disk Hit Ratios:        5min: 60.0%, 60min: 60.0%
    
33.         Storage Swap size:      8240116 KB
    
34.         Storage Mem size:       5176 KB
    
35.         Mean Object Size:       54.64 KB
    
36.         Requests given to unlinkd:      132
    
37. Median Service Times (seconds)  5 min    60 min:
    
38.         HTTP Requests (All):   0.00919  0.00919
    
39.         Cache Misses:          0.04277  0.04277
    
40.         Cache Hits:            0.00463  0.00463
    
41.         Near Hits:             0.00286  0.00286
    
42.         Not-Modified Replies:  0.00379  0.00379
    
43.         DNS Lookups:           0.00000  0.00000
    
44.         ICP Queries:           0.00000  0.00000
    
45. Resource usage for squid:
    
46.         UP Time:        190.985 seconds
    
47.         CPU Time:       2.965 seconds
    
48.         CPU Usage:      1.55%
    
49.         CPU Usage, 5 minute avg:        1.61%
    
50.         CPU Usage, 60 minute avg:       1.61%
    
51.         Process Data Segment Size via sbrk(): 34528 KB
    
52.         Maximum Resident Size: 38680 KB
    
53.         Page faults with physical i/o: 0
    
54. Memory accounted for:
    
55.         Total accounted:        19206 KB
    
56.         memPoolAlloc calls: 1140773
    
57.         memPoolFree calls: 677318
    
58. File descriptor usage for squid:
    
59.         Maximum number of file descriptors:   11072
    
60.         Largest file desc currently in use:    276
    
61.         Number of file desc currently in use:  245
    
62.         Files queued for open:                   0
    
63.         Available number of file descriptors: 10827
    
64.         Reserved number of file descriptors:   100
    
65.         Store Disk files open:                   2
    
66.         IO loop method:                     kqueue
    
67. Internal Data Structures:
    
68.         150913 StoreEntries
    
69.            213 StoreEntries with MemObjects
    
70.            157 Hot Object Cache Items
    
71.         150817 on-disk objects
    
72. 
    
73. sysctl -a | grep kern.maxfiles
    
74. kern.maxfiles: 12328
    
75. kern.maxfilesperproc: 11095

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[ 本帖最后由 kevinadmin 于 2008-7-25 11:41 编辑 ]

kevinadmin

在用top查看的时候squid一天基本上要释放4－5次内存，而在info里看到，并没有缓存太多到内存里啊

看过之前的贴子，最关键的是文件描述符、内存、还有一个IO来着，不过我的都没有达到上限啊，
所以没有明白为什么命中率为这么低，尤其是内存命率
还请知道的人言讲言讲，谢谢

[ 本帖最后由 kevinadmin 于 2008-7-23 16:47 编辑 ]

dexter_yccs

Cache information for squid:
        Request Hit Ratios:        5min: 55.9%, 60min: 53.7%
        Byte Hit Ratios:        5min: 42.9%, 60min: 39.1%
        Request Memory Hit Ratios:        5min: 66.0%, 60min: 56.9%
        Request Disk Hit Ratios:        5min: 13.1%, 60min: 18.1%
        Storage Swap size:        21503872 KB
        Storage Mem size:        409588 KB
        Mean Object Size:        21.50 KB
对这个也不是搞的很清楚，帮我看下我这个正常吗？

ahsiao

原帖由 dexter_yccs 于 2008-7-24 08:06 发表
Cache information for squid:
        Request Hit Ratios:        5min: 55.9%, 60min: 53.7%
        Byte Hit Ratios:        5min: 42.9%, 60min: 39.1%
        Request Memory Hit Ratios:        5min: 66.0%, 60min: 56.9%
        Request Disk Hit ...

还可以。有人说30%以上就正常。你的已经达到60%了。我的memory命中率跟lz的差不多，很低。一直很郁闷。

kevinadmin

原帖由 dexter_yccs 于 2008-7-24 08:06 发表
Cache information for squid:
        Request Hit Ratios:        5min: 55.9%, 60min: 53.7%
        Byte Hit Ratios:        5min: 42.9%, 60min: 39.1%
        Request Memory Hit Ratios:        5min: 66.0%, 60min: 56.9%
        Request Disk Hit ...

可以说说你的应用跟你的squid配置 吗？

你的内存命中率已经很高了

closed

呵呵，提高正向命中率很简单，限制你的客户机只允许他们访问少数几个网站

dexter_yccs

我也就基本配置，三百个账号左右，能正常上网就行了，呵呵。
明天上班再把我的配置贴上来。

kevinadmin

原帖由 dexter_yccs 于 2008-7-24 22:59 发表
我也就基本配置，三百个账号左右，能正常上网就行了，呵呵。
明天上班再把我的配置贴上来。

哦 你做的是正向代理？公司内部用的？

我的是反向代理

dexter_yccs

對的啊

zhengwei_zw

Cache information for squid:
        Request Hit Ratios:     5min: 70.3%, 60min: 68.4%
        Byte Hit Ratios:        5min: 56.1%, 60min: 52.4%
        Request Memory Hit Ratios:      5min: 2.0%, 60min: 0.8%
        Request Disk Hit Ratios:        5min: 36.1%, 60min: 40.2%
        Storage Swap size:      725898 KB
        Storage Mem size:       108108 KB
        Mean Object Size:       35.85 KB
        Requests given to unlinkd:      227
我的才低 啊