About Tom Lane's Xeon CS test case - Mailing list pgsql-performance

From 黄永卫
Subject About Tom Lane's Xeon CS test case
Date
Msg-id 3859ECB0DC6F4B028448795941712CE0@NECSLGZ0061411
Whole thread Raw
Responses Re: About Tom Lane's Xeon CS test case
List pgsql-performance

Dear all and Tom

    Recently my companys  postgres DB server sluggish suddenly with a hight Context-switching value as below:

 

2010-04-07 04:03:15 procs                      memory      swap          io     system         cpu

2010-04-07 04:03:15  r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa

2010-04-07 14:04:27  3  0      0 2361272 272684 3096148    0    0     3  1445  973 14230  7  8 84  0

2010-04-07 14:05:27  2  0      0 2361092 272684 3096220    0    0     3  1804 1029 31852  8 10 81  1

2010-04-07 14:06:27  1  0      0 2362236 272684 3096564    0    0     3  1865 1135 19689  9  9 81  0

2010-04-07 14:07:27  1  0      0 2348400 272720 3101836    0    0     3  1582 1182 149461 15 17 67  0

2010-04-07 14:08:27  3  0      0 2392028 272840 3107600    0    0     3  3093 1275 203196 24 23 53  1

2010-04-07 14:09:27  3  1      0 2386224 272916 3107960    0    0     3  2486 1331 193299 26 22 52  0

2010-04-07 14:10:27 34  0      0 2332320 272980 3107944    0    0     3  1692 1082 214309 24 22 54  0

2010-04-07 14:11:27  1  0      0 2407432 273028 3108092    0    0     6  2770 1540 76643 29 13 57  1

2010-04-07 14:12:27  9  0      0 2358968 273104 3108388    0    0     7  2639 1466 10603 22  6 72  1

 

 

    I have read this problem  about Tom Lane Workload . And I found my companys DB  is a Xeon MP server.

I am going to have a test to confirm it.

 

If anybody have the test case Tom Lane's Xeon CS test case

Thank you!

   

 

My postgres version: 8.1.3;

My OS version: Linux version 2.4.21-47.Elsmp((Red Hat Linux 3.2.3-54)

My CPU:

processor       : 7

vendor_id       : GenuineIntel

cpu family      : 15

model           : 6

model name      : Intel(R) Xeon(TM) CPU 3.40GHz

stepping        : 8

cpu MHz         : 3400.262

cache size      : 1024 KB

physical id     : 1

 

 

 

Best regards,

Ray Huang

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