From: | Andres Freund <andres(at)anarazel(dot)de> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Amit Khandekar <amitdkhan(dot)pg(at)gmail(dot)com>, Andreas Joseph Krogh <andreas(at)visena(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, "Jonathan S(dot) Katz" <jkatz(at)postgresql(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
Subject: | Re: Query is over 2x slower with jit=on |
Date: | 2018-09-19 22:40:47 |
Message-ID: | 20180919224047.mcdjwis56ywqzhzs@alap3.anarazel.de |
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Lists: | pgsql-hackers |
Hi,
On 2018-09-17 17:50:15 -0400, Tom Lane wrote:
> Amit Khandekar <amitdkhan(dot)pg(at)gmail(dot)com> writes:
> > On 11 September 2018 at 14:50, Amit Khandekar <amitdkhan(dot)pg(at)gmail(dot)com> wrote:
> >> On 10 September 2018 at 21:39, Andres Freund <andres(at)anarazel(dot)de> wrote:
> >>> On 2018-09-10 15:42:55 +0530, Amit Khandekar wrote:
> >>>> I think we better show per-worker jit info also.
>
> Just to throw a contrarian opinion into this: I find the current EXPLAIN
> output for JIT to be insanely verbose already.
Hm, it'd have been nice to get that feedback a little bit earlier, I did
inquire...
Currently:
JIT:
Functions: 2
Generation Time: 0.680 ms
Inlining: true
Inlining Time: 7.591 ms
Optimization: true
Optimization Time: 20.522 ms
Emission Time: 14.607 ms
How about making that:
JIT:
Functions: 2
Options: Inlining, Optimization
Times (Total, Generation, Inlining, Optimization, Emission): 43.4 ms, 0.680 ms, 7.591 ms, 20.522 ms, 14.607 ms
or something similar?
Greetings,
Andres Freund
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