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Re: [svnbench] Revision: 1302254 compiled Mar 19 2012, 00:21:25

From: Johan Corveleyn <jcorvel_at_gmail.com>
Date: Mon, 19 Mar 2012 11:12:13 +0100

On Mon, Mar 19, 2012 at 2:52 AM, <neels_at_apache.org> wrote:
> /home/neels/svnbench/20120319-002438
> Started at Mon Mar 19 00:24:38 UTC 2012
>
> *Disclaimer:* this tests only file://-URL access on a GNU/Linux VM.
> This is intended to measure changes in performance of the local working
> copy layer, *only*. These results are *not* generally true for everyone.
>
> Averaged-total results across all runs:
> ---------------------------------------
>
> COMPARE total_1.7.x to total_trunk
[...]

Neels (or anyone),

I think it would be (even more) interesting to see the evolution of
performance on trunk, from week to week. The comparisons with 1.7.x
are interesting, but it's difficult to see from these numbers that
something significantly changed relative to the week before. Getting a
more direct view onto the week-by-week evolution might help spot
improvements or regressions that were made in recent commits.

Now, first of all this requires that the numbers can be compared over
time, which hinges on the stability of the perf-testsuite, and also
the stability of the machine and its environment. The former seems
relatively stable. I don't know about the latter. Is that (virtual)
machine relatively isolated from external influences etc... ? Can we
be relatively certain that no other processes run during the benchmark
etc?

If those pre-conditions are met: would someone be able to do the work
of setting up something to process these numbers, creating nice tables
and/or graphs out of them showing the weekly evolution? Maybe even go
back to the last N reports and process them to include some historical
data?

I don't have the cycles to implement this myself, so it's just a
suggestion. If someone can do this, I think it would be a valuable
tool for devs to keep an eye on performance.

-- 
Johan
Received on 2012-03-19 11:13:09 CET

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