(1). 前言
对Redis进行基准测试,需要测出最终的QPS.
(2). redis-benchmark命令格式
lixin-macbook:src lixin$ ./redis-benchmark -h
Usage: redis-benchmark [-h <host>] [-p <port>] [-c <clients>] [-n <requests>] [-k <boolean>]
-h <hostname> Server hostname (default 127.0.0.1)
-p <port> Server port (default 6379)
-s <socket> Server socket (overrides host and port) # 指定socket的情况下,host和port将会忽略
-a <password> Password for Redis Auth # 指定Redis密码
--user <username> Used to send ACL style 'AUTH username pass'. Needs -a.
-c <clients> Number of parallel connections (default 50) # 配置client的连接池数量(并发数)
-n <requests> Total number of requests (default 100000) # 总共要发起多少请求
-d <size> Data size of SET/GET value in bytes (default 3) # 以字节的形式指定 SET/GET 值的数据大小
--dbnum <db> SELECT the specified db number (default 0) # 选择哪个DB
--threads <num> Enable multi-thread mode.
--cluster Enable cluster mode.
--enable-tracking Send CLIENT TRACKING on before starting benchmark.
-k <boolean> 1=keep alive 0=reconnect (default 1)
-r <keyspacelen> Use random keys for SET/GET/INCR, random values for SADD, # 设置随机KEY的大小
random members and scores for ZADD.
Using this option the benchmark will expand the string __rand_int__
inside an argument with a 12 digits number in the specified range
from 0 to keyspacelen-1. The substitution changes every time a command
is executed. Default tests use this to hit random keys in the
specified range.
-P <numreq> Pipeline <numreq> requests. Default 1 (no pipeline). # 通过管道传输<numreq>请求
-e If server replies with errors, show them on stdout.
(no more than 1 error per second is displayed)
-q Quiet. Just show query/sec values # 压测退出显示吞吐量
--precision Number of decimal places to display in latency output (default 0)
--csv Output in CSV format # CSV格式输出
-l Loop. Run the tests forever # 生成循环,永久执行测试
-t <tests> Only run the comma separated list of tests. The test # 仅运行以逗号分隔的测试命令列表
names are the same as the ones produced as output.
-I Idle mode. Just open N idle connections and wait. # Idle模式,仅打开N个idle连接并等待.
Examples:
Run the benchmark with the default configuration against 127.0.0.1:6379:
$ redis-benchmark
Use 20 parallel clients, for a total of 100k requests, against 192.168.1.1:
$ redis-benchmark -h 192.168.1.1 -p 6379 -n 100000 -c 20
Fill 127.0.0.1:6379 with about 1 million keys only using the SET test:
$ redis-benchmark -t set -n 1000000 -r 100000000
Benchmark 127.0.0.1:6379 for a few commands producing CSV output:
$ redis-benchmark -t ping,set,get -n 100000 --csv
Benchmark a specific command line:
$ redis-benchmark -r 10000 -n 10000 eval 'return redis.call("ping")' 0
Fill a list with 10000 random elements:
$ redis-benchmark -r 10000 -n 10000 lpush mylist __rand_int__
On user specified command lines __rand_int__ is replaced with a random integer
with a range of values selected by the -r option.
(3). 压测过程
# ************************************************************************
# 机器配置如下:
# MacBook Pro (Retina, 13-inch, Early 2015)
# 2.9 GHz 双核Intel Core i5
# 8 GB 1867 MHz DDR3
# redis-benchmark/redis/redis-stat 都在这一台机器上.
# ************************************************************************
# *************************每一次都跑三轮,取中间值为参考.*************************
# 10个连接,100W请求
# CPU占用率:71%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 10 -n 1000000 -t set,get -d 50
====== SET ======
34191.54 requests per second
35074.18 requests per second
35518.93 requests per second
====== GET ======
35364.43 requests per second
35973.81 requests per second
36121.95 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
16:50:05 23 49 11 0 1.61MB 3.57MB 1 38.4k 0 0 100 38.4k 0 0B
16:50:06 22 48 11 0 1.61MB 3.57MB 1 37.1k 0 0 100 37.1k 0 0B
16:50:07 22 48 11 0 1.61MB 3.57MB 1 37.1k 0 0 100 37.1k 0 0B
# CPU占用率:75%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 20 -n 1000000 -t set,get -d 50
====== SET ======
37154.00 requests per second
38648.84 requests per second
39195.70 requests per second
====== GET ======
38119.93 requests per second
39373.18 requests per second
40293.34 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
16:52:02 27 50 21 0 2.15MB 3.61MB 1 40.6k 0 0 - 0 0 0B
16:52:03 27 50 21 0 2.15MB 3.61MB 1 41.4k 0 0 - 0 0 0B
16:52:05 27 51 21 0 2.15MB 3.61MB 1 41.1k 0 0 - 0 0 0B
# CPU占用率:76%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 30 -n 1000000 -t set,get -d 50
====== SET ======
40859.69 requests per second
41421.59 requests per second
41839.25 requests per second
====== GET ======
37639.27 requests per second
40866.37 requests per second
43306.92 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
16:53:18 25 54 31 0 2.68MB 3.83MB 1 47.5k 0 0 100 47.5k 0 0B
16:53:19 25 54 31 0 2.68MB 3.83MB 1 48.2k 0 0 100 48.2k 0 0B
16:53:20 25 55 31 0 2.68MB 3.83MB 1 49.0k 0 0 100 49.0k 0 0B
# CPU占用率:77%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 40 -n 1000000 -t set,get -d 50
====== SET ======
39560.09 requests per second
43775.17 requests per second
44648.84 requests per second
====== GET ======
44464.21 requests per second
45008.55 requests per second
45545.64 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
16:54:08 29 53 41 0 3.20MB 3.93MB 1 48.9k 0 0 - 0 0 0B
16:54:09 29 53 41 0 3.20MB 3.93MB 1 49.1k 0 0 - 0 0 0B
16:54:10 29 53 41 0 3.20MB 3.93MB 1 48.4k 0 0 - 0 0 0B
16:54:11 25 52 41 0 3.20MB 3.93MB 1 47.1k 0 0 100 34.8k 0 0B
# CPU占用率:78%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 50 -n 1000000 -t set,get -d 50
====== SET ======
44935.74 requests per second
45802.23 requests per second
46354.24 requests per second
====== GET ======
45985.47 requests per second
45369.99 requests per second
46959.38 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
16:54:46 30 54 51 0 3.73MB 3.98MB 1 51.6k 0 0 - 0 0 0B
16:54:47 30 54 51 0 3.73MB 3.98MB 1 52.4k 0 0 - 0 0 0B
16:54:48 30 55 51 0 3.73MB 3.98MB 1 50.5k 0 0 - 0 0 0B
16:54:49 30 54 51 0 3.73MB 3.98MB 1 50.1k 0 0 - 0 0 0B
16:54:50 29 53 51 0 3.73MB 3.98MB 1 50.0k 0 0 - 0 0 0B
# CPU占用率:78%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 60 -n 1000000 -t set,get -d 50
====== SET ======
46371.43 requests per second
47281.32 requests per second
47456.34 requests per second
====== GET ======
46620.05 requests per second
47865.21 requests per second
49062.90 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
16:55:51 30 54 61 0 4.24MB 4.35MB 1 53.5k 0 0 - 0 0 0B
16:55:53 30 55 61 0 4.24MB 4.35MB 1 54.5k 0 0 - 0 0 0B
16:55:54 30 54 61 0 4.24MB 4.35MB 1 53.6k 0 0 - 0 0 0B
16:55:55 31 55 61 0 4.24MB 4.35MB 1 55.8k 0 0 - 0 0 0B
# CPU占用率:80%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 70 -n 1000000 -t set,get -d 50
====== SET ======
46172.31 requests per second
48766.21 requests per second
49470.66 requests per second
====== GET ======
45601.71 requests per second
47846.89 requests per second
49441.31 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
16:56:48 30 54 71 0 4.76MB 4.68MB 1 51.1k 0 0 - 0 0 0B
16:56:49 30 55 71 0 4.76MB 4.68MB 1 54.2k 0 0 - 0 0 0B
16:56:50 31 55 71 0 4.76MB 4.68MB 1 55.2k 0 0 - 0 0 0B
16:56:51 31 55 71 0 4.76MB 4.68MB 1 55.1k 0 0 - 0 0 0B
16:56:52 31 55 71 0 4.76MB 4.68MB 1 54.4k 0 0 - 0 0 0B
# CPU占用率:80%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 80 -n 1000000 -t set,get -d 50
====== SET ======
47454.09 requests per second
49343.73 requests per second
49664.76 requests per second
====== GET ======
46763.93 requests per second
48654.70 requests per second
49719.09 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
16:57:34 31 56 81 0 5.29MB 4.84MB 1 52.8k 0 0 - 0 0 0B
16:57:35 31 56 81 0 5.29MB 4.85MB 1 53.4k 0 0 - 0 0 0B
16:57:36 30 55 81 0 5.29MB 4.85MB 1 52.6k 0 0 - 0 0 0B
# CPU占用率:80%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 90 -n 1000000 -t set,get -d 50
====== SET ======
47653.09 requests per second
48880.63 requests per second
49640.11 requests per second
====== GET ======
46174.45 requests per second
47456.34 requests per second
49046.05 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
16:58:32 31 55 91 0 5.81MB 5.13MB 1 55.3k 0 0 - 0 0 0B
16:58:33 31 55 91 0 5.81MB 5.13MB 1 55.9k 0 0 - 0 0 0B
16:58:34 31 56 91 0 5.81MB 5.13MB 1 57.6k 0 0 - 0 0 0B
16:58:35 31 56 91 0 5.81MB 5.13MB 1 54.3k 0 0 - 0 0 0B
16:58:36 31 55 91 0 5.81MB 5.13MB 1 53.1k 0 0 - 0 0 0B
# CPU占用率:80%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 100 -n 1000000 -t set,get -d 50
====== SET ======
49870.34 requests per second
49877.80 requests per second
51007.40 requests per second
====== GET ======
45526.97 requests per second
48797.15 requests per second
48763.84 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
16:59:24 32 56 101 0 6.33MB 5.68MB 1 57.9k 0 0 - 0 0 0B
16:59:25 31 56 101 0 6.33MB 5.68MB 1 58.0k 0 0 - 0 0 0B
16:59:26 31 56 101 0 6.33MB 5.68MB 1 57.9k 0 0 - 0 0 0B
# CPU占用率:80%
lixin-macbook:src lixin$ ./redis-benchmark -h 127.0.0.1 -p 6379 -c 110 -n 1000000 -t set,get -d 50
====== SET ======
46229.95 requests per second
48339.54 requests per second
49865.36 requests per second
====== GET ======
46214.99 requests per second
47386.62 requests per second
51305.73 requests per second
# redis-stat 监控数据(看第9列[cmd/s])
17:00:45 31 56 111 0 6.85MB 5.90MB 1 56.7k 0 0 - 0 0 0B
17:00:46 31 56 111 0 6.85MB 5.90MB 1 55.7k 0 0 - 0 0 0B
17:00:47 31 56 111 0 6.85MB 5.90MB 1 54.8k 0 0 - 0 0 0B
17:00:48 32 57 111 0 6.85MB 5.90MB 1 57.8k 0 0 - 0 0 0B
(4). 压测结论
从上面的基准测试可以看出,当并发连接数达到:100之后,就开始出现了拐点(QPS不升,反降)
所以,我这台机器上Redis,最佳配置并发数(连接池数量),为100个,SET操作的QPS为:49877/s,GET操作的QPS为:48797/s.
通地redis-stat监控的数据来看,Redis服务器,每秒的吞吐量为:5.7W左右.
