| To: | Stan Cox <scox@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [pcp] linux pmda time fields |
| From: | Mark Goodwin <mgoodwin@xxxxxxxxxx> |
| Date: | Sat, 27 Apr 2013 10:51:19 +1000 |
| Cc: | Nathan Scott <nathans@xxxxxxxxxx>, PCP <pcp@xxxxxxxxxxx> |
| Delivered-to: | pcp@xxxxxxxxxxx |
| In-reply-to: | <517AE6A7.6090104@xxxxxxxxxx> |
| References: | <517AE6A7.6090104@xxxxxxxxxx> |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20130206 Thunderbird/14.0 |
On 04/27/2013 06:42 AM, Stan Cox wrote: The values I am seeing on linux for proc.psinfo.*time seem suspicious.
This was fixed back in January, somehow you're missing this commit :
commit 5ab6b9d4e33456cb1d57752bbc0b86d98eb4e26a
Author: Mark Goodwin <mgoodwin@xxxxxxxxxx>
Date: Tue Jan 1 10:47:29 2013 +1100
Ensure HZ is initialised in Linux proc PMDA.
HZ was not initialized, so we are multiplying by -1 during certain
calculations, and exporting incorrect values for some per-process
CPU time metrics.
This is a bug introduced when we split the proc PMDA off from the
Linux PMDA.
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