| From: | Jeff Frost <jeff(at)pgexperts(dot)com> |
|---|---|
| To: | Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
| Cc: | Soni M <diptatapa(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Postgres Replaying WAL slowly |
| Date: | 2014-06-30 17:04:44 |
| Message-ID: | 37F64AA0-5040-4158-822B-A0F8F7B763A8@pgexperts.com |
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| Lists: | pgsql-performance |
On Jun 30, 2014, at 9:14 AM, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> wrote:
> On 06/30/2014 05:46 PM, Soni M wrote:
>> Here's what 'perf top' said on streaming replica :
>>
>> Samples: 26K of event 'cpu-clock', Event count (approx.): 19781
>> 95.97% postgres [.] 0x00000000002210f3
>
> Ok, so it's stuck doing something.. Can you get build with debug symbols installed, so that we could see the function name?
> - Heikki
>
Looks like StandbyReleaseLocks:
Samples: 10K of event 'cpu-clock', Event count (approx.): 8507
89.21% postgres [.] StandbyReleaseLocks
0.89% libc-2.12.so [.] __strstr_sse2
0.83% perf [.] 0x000000000005f1e5
0.74% [kernel] [k] kallsyms_expand_symbol
0.52% libc-2.12.so [.] memchr
0.47% perf [.] symbols__insert
0.47% [kernel] [k] format_decode
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