From: | Richard Neill <rn214(at)cam(dot)ac(dot)uk> |
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To: | |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: Postgres query completion status? |
Date: | 2009-11-22 15:14:22 |
Message-ID: | 4B09554E.8090502@cam.ac.uk |
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Lists: | pgsql-performance |
Greg Smith wrote:
> Richard Neill wrote:
>> Am I missing something though, or is this project dormant, without
>> having released any files?
>
> My bad--gave you the wrong url.
> http://git.postgresql.org/gitweb?p=pg_top.git;a=summary has the project
> I meant to point you toward.
Will try that out...
>
>> What I really want to know is, how far through that query has it got?
>> (For example, if the query is an update, then surely it knows how many
>> rows have been updated, and how many are yet to go).
> I understand what you want. The reason you're not getting any
> suggestions is because that just isn't exposed in PostgreSQL yet.
> Clients ask for queries to be run, eventually they get rows of results
> back, but there's no notion of how many they're going to get in advance
> or how far along they are in executing the query's execution plan.
> There's a couple of academic projects that have started exposing more of
> the query internals, but I'm not aware of anyone who's even started
> moving in the direction of what you'd need to produce a progress bar.
>
Is there any internal table (similar to pg_stat_activity) I can look at?
Richard
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