PG长短连接-性能测试
作者:互联网
PG短连接对系统性能有很大影响。
# test.sql
select 1;
[postgres@master ~]$ pgbench -M extended -n -r -f ./test.sql -c 16 -j 4 -C -T 30
transaction type: ./test.sql
scaling factor: 1
query mode: extended
number of clients: 16
number of threads: 4
duration: 30 s
number of transactions actually processed: 27868
latency average = 17.227 ms
tps = 928.756333 (including connections establishing)
tps = 1235.692776 (excluding connections establishing)
statement latencies in milliseconds:
8.539 select 1;
如果系统没有sar,需要通过yum -y install sysstat安装
#sar -w 1
08:21:31 AM proc/s cswch/s
08:21:33 AM 844.00 5311.00
08:21:34 AM 787.00 4932.00
08:21:35 AM 846.00 5322.00
08:21:36 AM 864.00 5515.00
08:21:37 AM 856.44 5379.21
08:21:38 AM 790.00 4960.00
08:21:39 AM 819.00 5217.00
08:21:40 AM 863.00 5531.00
08:21:41 AM 843.00 5415.00
08:21:42 AM 819.00 5139.00
08:21:43 AM 285.00 1916.00
[postgres@master ~]$ pgbench -M extended -n -r -f ./test.sql -c 16 -j 4 -T 30
transaction type: ./test.sql
scaling factor: 1
query mode: extended
number of clients: 16
number of threads: 4
duration: 30 s
number of transactions actually processed: 1348764
latency average = 0.356 ms
tps = 44954.875131 (including connections establishing)
tps = 44967.030121 (excluding connections establishing)
statement latencies in milliseconds:
0.344 select 1;
#sar -w 1
08:21:44 AM 0.00 92.00
08:21:45 AM 0.00 99.00
08:21:46 AM 0.00 104.00
08:21:47 AM 0.00 138.00
08:21:49 AM 0.00 89788.12
08:21:50 AM 0.00 84233.00
08:21:51 AM 0.00 62440.00
08:21:52 AM 0.00 65457.00
08:21:53 AM 0.00 66130.00
08:21:54 AM 0.00 61289.00
08:21:55 AM 0.00 64196.00
08:21:56 AM 0.00 62915.00
08:21:57 AM 0.00 61806.00
08:21:58 AM 0.00 63227.00
08:21:59 AM 0.00 64437.00
标签:21,08,AM,number,长短,PG,测试,test,0.00 来源: https://blog.csdn.net/u010307344/article/details/121323816