From: Bart Schaefer <schaefer@brasslantern.com>
To: Sebastian Gniazdowski <sgniazdowski@gmail.com>
Cc: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: Slowdown around 5.0.5-dev-0
Date: Sun, 18 Oct 2015 14:07:07 -0700 [thread overview]
Message-ID: <CAH+w=7YW=Ono7EgmdE4DVC-3LzTGK9uOZTxR_Znni78unq-nfA@mail.gmail.com> (raw)
In-Reply-To: <CAKc7PVAX465ikPrPN3LqhA+0Kb9FN3d6TsgV34oq8nd=RN_F6A@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1705 bytes --]
On Oct 18, 2015 1:40 PM, "Sebastian Gniazdowski" <sgniazdowski@gmail.com>
wrote:
>
> On 18 October 2015 at 18:19, Bart Schaefer <schaefer@brasslantern.com>
wrote:
> >
> > I'm strongly inclined to think that's more likely an artifact of the
> > testing method than of the test itself have you tried running the
> > tests in the opposite order?
>
> It starts new zsh process – the one in "$current_zsh" variable – and
> feeds it with the same script file, giving in arguments pid of main
> Zsh, name of tested Zsh and name of test function to run. This should
> imply full separation of the tests. That's why order shouldn't matter.
Sorry, I didn't mean order of zsh versions, I meant did you try doing
array_test before string_test within each version.
> You are quite right that the memory usage isn't "high from the
> beginning". It starts from 41 MB, goes to 164, 279, etc. in quite
> controlled way. Previous version of the script awaited 3 seconds
> before doing first check, that's why it started from values of 100 MB,
> and I rather misinterpreted this. How to interpret these still high
> values is now open.
String is stored as one contiguous block of bytes, so each time it exceeds
the size of the current heap block an entire new large-enough block is
allocated, and no previous block can never be re-used because the string
never shrinks.
> Tried a new test function:
>
> Its memory usage is low for all Zsh versions: ~2.5 MB, (e.g. 2.7, 2.9,
> 2.8, 2.6, 2.9, 2.8, 2.6, 2.9, 2.9, 2.8).
For functions the test would also need to compare run time / CPU usage - I
would not expect memory usage to be interesting unless the function
declared locals.
next prev parent reply other threads:[~2015-10-18 21:07 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-10 10:54 Sebastian Gniazdowski
2015-10-10 17:58 ` Bart Schaefer
2015-10-10 18:11 ` Sebastian Gniazdowski
2015-10-10 18:32 ` Sebastian Gniazdowski
2015-10-11 0:06 ` Bart Schaefer
2015-10-11 6:20 ` Bart Schaefer
2015-10-11 8:39 ` Sebastian Gniazdowski
2015-10-11 16:17 ` Bart Schaefer
2015-10-11 16:48 ` Sebastian Gniazdowski
2015-10-11 17:31 ` Bart Schaefer
2015-10-11 18:05 ` Sebastian Gniazdowski
2015-10-11 21:22 ` Bart Schaefer
2015-10-12 8:21 ` Sebastian Gniazdowski
2015-10-12 14:01 ` Bart Schaefer
2015-10-12 16:50 ` Sebastian Gniazdowski
2015-10-13 0:33 ` Bart Schaefer
2015-10-13 8:21 ` Sebastian Gniazdowski
2015-10-13 15:52 ` Bart Schaefer
2015-10-14 6:50 ` Sebastian Gniazdowski
2015-10-14 13:27 ` Peter Stephenson
2015-10-14 16:25 ` Bart Schaefer
2015-10-14 16:50 ` Bart Schaefer
2015-10-15 4:32 ` Bart Schaefer
2015-10-15 13:03 ` Sebastian Gniazdowski
2015-10-16 0:35 ` Bart Schaefer
2015-10-17 9:12 ` Sebastian Gniazdowski
2015-10-17 9:24 ` Sebastian Gniazdowski
2015-10-18 16:19 ` Bart Schaefer
2015-10-18 20:40 ` Sebastian Gniazdowski
2015-10-18 21:07 ` Bart Schaefer [this message]
2015-10-18 21:31 ` Sebastian Gniazdowski
2015-10-19 17:21 ` Bart Schaefer
2015-10-22 12:49 ` Sebastian Gniazdowski
2015-10-22 15:00 ` Bart Schaefer
2015-10-22 16:28 ` Sebastian Gniazdowski
2015-10-22 16:33 ` Sebastian Gniazdowski
2015-10-23 15:40 ` Sebastian Gniazdowski
2015-10-23 15:57 ` Sebastian Gniazdowski
2015-10-23 19:26 ` Bart Schaefer
2015-10-23 23:50 ` Bart Schaefer
2015-10-24 6:09 ` Sebastian Gniazdowski
2015-10-24 7:37 ` Sebastian Gniazdowski
2015-10-24 8:04 ` Sebastian Gniazdowski
2015-10-24 19:39 ` Bart Schaefer
2015-10-25 7:35 ` Sebastian Gniazdowski
2015-10-25 17:23 ` Bart Schaefer
2015-10-25 20:56 ` Sebastian Gniazdowski
2015-10-26 0:49 ` Bart Schaefer
2015-10-26 7:41 ` Sebastian Gniazdowski
2015-10-26 7:47 ` Sebastian Gniazdowski
2015-10-24 6:27 ` Sebastian Gniazdowski
2015-10-24 10:54 ` Sebastian Gniazdowski
2015-10-24 11:25 ` Sebastian Gniazdowski
2015-10-24 16:31 ` Bart Schaefer
2015-10-24 16:41 ` Bart Schaefer
2015-10-23 6:32 ` Sebastian Gniazdowski
2015-10-16 0:37 ` Bart Schaefer
2015-10-13 13:07 ` Sebastian Gniazdowski
2015-10-13 13:31 ` Sebastian Gniazdowski
2015-10-12 12:05 ` Sebastian Gniazdowski
2015-10-12 15:13 ` Bart Schaefer
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