| From: | David Fetter <david(at)fetter(dot)org> |
|---|---|
| To: | Greg Smith <greg(at)2ndQuadrant(dot)com> |
| Cc: | Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Tatsuo Ishii <ishii(at)postgresql(dot)org>, PostgreSQL Developers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [PATCH] pgbench --throttle (submission 7 - with lag measurement) |
| Date: | 2013-07-22 18:07:20 |
| Message-ID: | 20130722180720.GD15779@fetter.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Mon, Jul 22, 2013 at 01:49:39PM -0400, Greg Smith wrote:
> Very minor update with V19 here, to reflect Alvaro's comments. The
> tricky part now reads like this:
>
> High rate limit schedule lag values,
"High values of the rate limit schedule lag measurement?"
> that is lag values that are large compared to the actual transaction
> latency, indicate that something is amiss in the throttling process.
> High schedule lag can highlight a subtle problem there even if the
> target rate limit is met in the end.
Cheers,
David.
--
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