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10.07.2008 at 02:54AM PDT, ID: 23793115
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vmstat procs blocked - how to dig deeper?

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7.8
Zones:

HP-UX Unix, Unix Operating Systems, Computer Servers

Tags:

HP-UX, OS, 11.23, ia64
Hello,

System details:
HP-UX 11.23 on ia64

There appears to be a resource bottleneck on a server. When I run vmstat, I get the following output:
vmstat 5 5                                                                                          
                                                                         
         procs           memory                   page                              faults       cpu    
    r     b     w      avm    free   re   at    pi   po    fr   de    sr     in     sy    cs  us sy id  
    5    19     0  5503761  33861046  308   80     2    0     0    0     2  38750 416246 17021  16  7 77
    6    19     0  4093880  33860506  229   55     0    0     0    0     0  27147 228747 11679  17  4 79
    6    19     0  4093880  33859994  255   73     0    0     0    0     0  23451 218478 10536  17  4 79
    5    20     0  4137557  33859938  137   35     0    0     0    0     0  22023 202479  9512  18  3 80
    5    20     0  4137557  33860349  168   60     0    0     0    0     0  22964 563017  9528  16  6 78

From what I understand, b = blocked, which means the process is awaiting resources. As the output suggests, this is not memory related, so it must be I/O (disk operations or network or network, right?)

The database response times are down. How can I dig deeper into this? I've taken a look at iostat but the values don't really tell me much.

Thanks in advance.
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Answered By: SAP11-11
Expert Since: 09/25/2008
Accepted Solutions: 1
SAP11-11 has been an Expert for 3 months, during which he has posted 3 comments and answered 1 question. SAP11-11 is just one of 166 experts in the HP-UX Unix Zone. 1 expert collaborated on this answer, which was graded an "A" by the asker.
 
 
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