压力测试工具Benchmark

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（1）WEB服务

ab(Apache Bench)
使用：

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$ ab -n 100000 -c 100 -t 1 -k http://127.0.0.1:8080/

结果：

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Concurrency Level:      100
Time taken for tests:   1.000 seconds
Complete requests:      11996
Failed requests:        0
Write errors:           0
Keep-Alive requests:    11923
Total transferred:      10184239 bytes
HTML transferred:       7341552 bytes
Requests per second:    11996.00 [#/sec] (mean)
Time per request:       8.336 [ms] (mean)
Time per request:       0.083 [ms] (mean, across all concurrent requests)
Transfer rate:          9945.55 [Kbytes/sec] received

Weighttp
使用：

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$ weighttp -n 10000 -c 1000 -t 4 -k http://127.0.0.1:8080/

结果：

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finished in 1 sec, 707 millisec and 611 microsec, 5856 req/s, 1847 kbyte/s
requests: 10000 total, 10000 started, 10000 done, 10000 succeeded, 0 failed, 0 errored
status codes: 10000 2xx, 0 3xx, 0 4xx, 0 5xx
traffic: 3230000 bytes total, 1720000 bytes http, 1510000 bytes data

wrk

使用：

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$ wrk -t12 -c400 -d30s http://127.0.0.1:8080/index.html

结果：

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Running 30s test @ http://127.0.0.1:8080/index.html
    12 threads and 400 connections
    Thread Stats   Avg      Stdev     Max   +/- Stdev
      Latency   635.91us    0.89ms  12.92ms   93.69%
      Req/Sec    56.20k     8.07k   62.00k    86.54%
    22464657 requests in 30.00s, 17.76GB read
  Requests/sec: 748868.53
  Transfer/sec:    606.33MB

httperf

使用：

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$ httperf --server=127.0.0.1 --port=8080 --rate=100 --num-conns=100 --num-calls=100000 --timeout=5 --hog --uri=/

结果：

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Maximum connect burst length: 1

Total: connections 10 requests 10 replies 10 test-duration 9.286 s

Connection rate: 1.1 conn/s (928.6 ms/conn, <=1 concurrent connections)
Connection time [ms]: min 284.2 avg 303.2 max 376.2 median 284.5 stddev 38.4
Connection time [ms]: connect 91.8
Connection length [replies/conn]: 1.000

Request rate: 1.1 req/s (928.6 ms/req)
Request size : 68.0

Reply rate [replies/s]: min 1.0 avg 1.0 max 1.0 stddev 0.0 (1 samples)
Reply time [ms]: response 99.1 transfer 112.3
Reply size [B]: header 241.0 content 29147.0 footer 0.0 (total 29388.0)
Reply status: 1xx=0 2xx=10 3xx=0 4xx=0 5xx=0

CPU time [s]: user 1.99 system 7.27 (user 21.5% system 78.3% total 99.7%)
Net I/O: 31.0 KB/s (0.3*10^6 bps)

Errors: total 0 client-timo 0 socket-timo 0 connrefused 0 connreset 0
Errors: fd-unavail 0 addrunavail 0 ftab-full 0 other 0

[b]（2）数据库

SysBench
使用：

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$ sysbench --test=oltp --db-driver=mysql --mysql-password=sbtest prepare
$ sysbench --test=oltp --db-driver=mysql --mysql-password=sbtest run

结果：

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sysbench 0.4.12:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1

Doing OLTP test.
Running mixed OLTP test
Using Special distribution (12 iterations,  1 pct of values are returned in 75 pct cases)
Using "BEGIN" for starting transactions
Using auto_inc on the id column
Maximum number of requests for OLTP test is limited to 10000
Threads started!
Done.

OLTP test statistics:
    queries performed:
        read:                            140000
        write:                           50000
        other:                           20000
        total:                           210000
    transactions:                        10000  (25.72 per sec.)
    deadlocks:                           0      (0.00 per sec.)
    read/write requests:                 190000 (488.63 per sec.)
    other operations:                    20000  (51.43 per sec.)

Test execution summary:
    total time:                          388.8436s
    total number of events:              10000
    total time taken by event execution: 388.7773
    per-request statistics:
         min:                                 28.61ms
         avg:                                 38.88ms
         max:                                178.72ms
         approx.  95 percentile:              44.83ms

Threads fairness:
    events (avg/stddev):           10000.0000/0.00
    execution time (avg/stddev):   388.7773/0.00

pgbench
使用：

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$ pgbench -i testdb
$ pgbench -c 10 -t 1000 testdb

结果：

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starting vacuum...end.
transaction type: TPC-B (sort of)
scaling factor: 1
query mode: simple
number of clients: 10
number of transactions per client: 1000
number of transactions actually processed: 10000/10000
tps = 657.505424 (including connections establishing)
tps = 659.935326 (excluding connections establishing)

mysqlslap

使用：

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mysqlslap -a -c 500 -i 10 -uroot -p123456

结果：

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Benchmark
    Running for engine innodb
    Average number of seconds to run all queries: 9.451 seconds
    Minimum number of seconds to run all queries: 9.288 seconds
    Maximum number of seconds to run all queries: 9.704 seconds
    Number of clients running queries: 50
    Average number of queries per client: 2000

参考：
http://gwan.com/en_apachebench_httperf.html
http://d.hatena.ne.jp/sh2/20120723
http://www.aikaiyuan.com/7569.html
http://en.wikipedia.org/wiki/Transaction_Processing_Performance_Council