针对同一个静态页面，squid、varnish、trafficserver性能以及命中率的比较
注：以下测试是在自己组装机器内进行
[root@www varnish]# cat /proc/cpuinfo #cpu信息一个
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz
stepping : 9
cpu MHz : 1600.000
cache size : 3072 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt xsave avx f16c lahf_lm arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
bogomips : 6584.86
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
[root@www varnish]# cat /proc/version #内核信息
Linux version 2.6.32-220.el6.x86_64
[root@www varnish]# lsb_release -a #操作系统信息
LSB Version: :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID: CentOS
Description: CentOS release 6.2 (Final)
Release: 6.2
Codename: Final
[root@www varnish]# cat /proc/meminfo #内存情况，共8G
MemTotal: 7736292 kB
MemFree: 4841624 kB
Buffers: 294216 kB
Cached: 2132408 kB
SwapCached: 0 kB
Active: 1340076 kB
测试详细结果：
[root@localhost ~]# webbench -c 500 -t 60 http://www.bbs.linuxblind.com/index.html
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.
Benchmarking: GET http://www.bbs.linuxblind.com/index.html
500 clients, running 60 sec.
Speed=495622 pages/min, 2788085 bytes/sec.
Requests: 495167 susceed, 455 failed.
-----------------------------------------------------------------------------------------
[root@localhost ~]# /usr/local/squid/bin/squidclient -h 192.168.1.108 -p 80 mgr:info
HTTP/1.1 200 OK
Server: squid/3.3.8
Mime-Version: 1.0
Date: Wed, 21 Aug 2013 08:28:44 GMT
Content-Type: text/plain
Expires: Wed, 21 Aug 2013 08:28:44 GMT
Last-Modified: Wed, 21 Aug 2013 08:28:44 GMT
X-Cache: MISS from linuxblind
X-Cache-Lookup: MISS from linuxblind:80
Via: 1.1 linuxblind (squid/3.3.8)
Connection: close
Squid Object Cache: Version 3.3.8
Start Time: Wed, 21 Aug 2013 08:25:16 GMT
Current Time: Wed, 21 Aug 2013 08:28:44 GMT
Connection information for squid:
Number of clients accessing cache: 2
Number of HTTP requests received: 495341
Number of ICP messages received: 0
Number of ICP messages sent: 0
Number of queued ICP replies: 0
Number of HTCP messages received: 0
Number of HTCP messages sent: 0
Request failure ratio: 0.00
Average HTTP requests per minute since start: 142850.5
Average ICP messages per minute since start: 0.0
Select loop called: 610212 times, 0.341 ms avg
Cache information for squid:
Hits as % of all requests: 5min: 100.0%, 60min: 100.0%
Hits as % of bytes sent: 5min: 100.0%, 60min: 100.0%
Memory hits as % of hit requests: 5min: 100.0%, 60min: 100.0%
Disk hits as % of hit requests: 5min: 0.0%, 60min: 0.0%
Storage Swap size: 4220 KB
Storage Swap capacity: 0.4% used, 99.6% free
Storage Mem size: 224 KB
Storage Mem capacity: 0.1% used, 99.9% free
Mean Object Size: 26.38 KB
Requests given to unlinkd: 0
Median Service Times (seconds) 5 min 60 min:
HTTP Requests (All): 0.00000 0.00000
Cache Misses: 0.00000 0.00000
Cache Hits: 0.00000 0.00000
Near Hits: 0.00000 0.00000
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: 208.053 seconds
CPU Time: 60.177 seconds
CPU Usage: 28.92%
CPU Usage, 5 minute avg: 33.42%
CPU Usage, 60 minute avg: 33.42%
Process Data Segment Size via sbrk(): 4492 KB
Maximum Resident Size: 50624 KB
Page faults with physical i/o: 0
Memory usage for squid via mallinfo():
Total space in arena: 4624 KB
Ordinary blocks: 4500 KB 179 blks
Small blocks: 0 KB 0 blks
Holding blocks: 10916 KB 5 blks
Free Small blocks: 0 KB
Free Ordinary blocks: 124 KB
Total in use: 124 KB 1%
Total free: 124 KB 1%
Total size: 15540 KB
Memory accounted for:
Total accounted: 942 KB 6%
memPool accounted: 942 KB 6%
memPool unaccounted: 14598 KB 94%
memPoolAlloc calls: 40123090
memPoolFree calls: 40124835
File descriptor usage for squid:
Maximum number of file descriptors: 20480
Largest file desc currently in use: 60
Number of file desc currently in use: 26
Files queued for open: 0
Available number of file descriptors: 20454
Reserved number of file descriptors: 100
Store Disk files open: 0
Internal Data Structures:
213 StoreEntries
54 StoreEntries with MemObjects
53 Hot Object Cache Items
160 on-disk objects
-----------------------------------------------------------------------------------------
[root@www ats]# webbench -c 500 -t 60 http://www.bbs.linuxblind.com/index.html
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.
Benchmarking: GET http://www.bbs.linuxblind.com/index.html
500 clients, running 60 sec.
Speed=1604781 pages/min, 8554361 bytes/sec.
Requests: 1604781 susceed, 0 failed.
---------------------------------------------------------------------------------------
[root@www ats]# echo "show:cache-stats" |traffic_shell
Successfully Initialized MgmtAPI in /usr/local/ats/var/trafficserver
trafficserver> show:cache-stats
Bytes Used --- 0 GB
Cache Size --- 599 GB
--RAM Cache--
Total Bytes -- 2147483648
Bytes Used --- 16384
Hits --------- 1604521
Misses ------- 4
--Lookups--
In Progress -- 0
Hits --------- 0
Misses ------- 0
--Reads--
In Progress -- 0
Hits --------- 1604524
Misses ------- 751
--Writes--
In Progress -- 0
Hits --------- 4
Misses ------- 747
--Updates--
In Progress -- 0
Hits --------- 0
Misses ------- 0
--Removes--
In Progress -- 0
Hits --------- 0
Misses ------- 0
-----------------------------------------------------------------------------------------
[root@www varnish]# webbench -c 500 -t 60 http://www.bbs.linuxblind.com/index.html
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.
Benchmarking: GET http://www.bbs.linuxblind.com/index.html
500 clients, running 60 sec.
Speed=1498734 pages/min, 8988399 bytes/sec.
Requests: 1498725 susceed, 9 failed.
---------------------------------------------------------------------------------------
[root@www vcache]# /usr/local/varnish/bin/varnishstat -n /var/vcache
0+00:04:26 /var/vcache
Hitrate ratio: 10 61 61
Hitrate avg: 1.0000 1.0000 1.0000
1498607 0.00 5633.86 client_conn - Client connections accepted
1498855 0.00 5634.79 client_req - Client requests received
1498854 0.00 5634.79 cache_hit - Cache hits
1 0.00 0.00 cache_miss - Cache misses
1 0.00 0.00 backend_conn - Backend conn. success
1 0.00 0.00 backend_recycle - Backend conn. recycles
1 0.00 0.00 fetch_length - Fetch with Length
299 . . n_sess_mem - N struct sess_mem
0 . . n_sess - N struct sess
1 . . n_object - N struct object
113 . . n_objectcore - N struct objectcore
113 . . n_objecthead - N struct objecthead
112 . . n_waitinglist - N struct waitinglist
1 . . n_vbc - N struct vbc
113 . . n_wrk - N worker threads
113 0.00 0.42 n_wrk_create - N worker threads created
1130 0.00 4.25 n_wrk_queued - N queued work requests
1 . . n_backend - N backends
30 . . n_lru_moved - N LRU moved objects
1475441 0.00 5546.77 n_objwrite - Objects sent with write
1498860 0.00 5634.81 s_sess - Total Sessions
1498855 0.00 5634.79 s_req - Total Requests
1 0.00 0.00 s_fetch - Total fetch
519864531 0.00 1954377.94 s_hdrbytes - Total header bytes
19485115 0.00 73252.31 s_bodybytes - Total body bytes
通过上图可以看出：
单位时间内，squid、varnish、ats性能呈现递增趋势，然而命中率却呈现出了下降趋势。
本文出自 “zhangdh开放空间” 博客，谢绝转载！