Re: [PATCH] pgbench --throttle (submission 7 - with lag measurement)

On Wed, Jun 19, 2013 at 2:42 PM, Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> wrote:
>> number of transactions actually processed: 301921
> Just a thought before spending too much time on this subtle issue.
>
> The patch worked reasonnably for 301900 transactions in your above run, and
> the few last ones, less than the number of clients, show strange latency
> figures which suggest that something is amiss in some corner case when
> pgbench is stopping. However, the point of pgbench is to test a steady
> state, not to achieve the cleanest stop at the end of a run.
>
> So my question is: should this issue be a blocker wrt to the feature?

I think so. If it doesn't get fixed now, it's not likely to get fixed
later. And the fact that nobody understands why it's happening is
kinda worrisome...

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company