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From: "René Scharfe" <l.s.r@web.de>
To: Jeff King <peff@peff.net>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 0/11] renaming argv_array
Date: Wed, 12 Aug 2020 18:23:01 +0200	[thread overview]
Message-ID: <045ea49b-7165-0f45-e670-a24bf648f880@web.de> (raw)
In-Reply-To: <20200812151038.GB33189@coredump.intra.peff.net>

Am 12.08.20 um 17:10 schrieb Jeff King:
> On Wed, Aug 12, 2020 at 11:06:11AM -0400, Jeff King wrote:
>
>> Debian unstable now ships coccinelle 1.0.8, and it's unbelievably slow
>> compared to 1.0.4. Running "make coccicheck" is currently at 80 minutes
>> of CPU time running each script in parallel, with none of them down.
>> They're also all consuming 6GB of RAM each, so I'm killing them all.
>
> This seems to be related to setting SPATCH_BATCH_SIZE to "0". It used to make
> things go much faster (if you had enough memory), but now seems to just
> consume tons of CPU. Setting it to "1" finishes the whole thing in ~13
> minutes of CPU (~2m wall-clock).

This bit me as well, and I settled with SPATCH_BATCH_SIZE = 10.  With
MAKEFLAGS += -j3 I get these number, which are quite similar to yours
(except I don't dare use more cores due to cooling issues..):

  real	4m12,393s
  user	12m15,447s
  sys	0m10,418s

> So that's at least a path forward, but in general I have been frustrated
> with operational aspects of coccinelle like this.

And I was a bit shocked when Coccinelle's testing package became
unmaintained for a while and I had to compile it from source.

And yes, coccicheck is quite heavy.  When I merge all .cocci files into
one I get:

  real	2m7,164s
  user	2m5,389s
  sys	0m1,572s

Nice.  With spatch -j3 I get basically the same numbers, though.  Hmm.

René

  reply	other threads:[~2020-08-12 16:23 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-28 20:21 Jeff King
2020-07-28 20:21 ` [PATCH 01/11] argv-array: use size_t for count and alloc Jeff King
2020-07-28 20:23 ` [PATCH 02/11] argv-array: rename to strvec Jeff King
2020-07-28 20:23 ` [PATCH 03/11] strvec: rename files from argv-array " Jeff King
2020-07-28 20:24 ` [PATCH 04/11] quote: rename sq_dequote_to_argv_array to mention strvec Jeff King
2020-07-28 20:24 ` [PATCH 05/11] strvec: convert builtin/ callers away from argv_array name Jeff King
2020-07-28 20:24 ` [PATCH 06/11] strvec: convert more " Jeff King
2020-07-28 20:25 ` [PATCH 07/11] strvec: convert remaining " Jeff King
2020-07-28 20:26 ` [PATCH 08/11] strvec: fix indentation in renamed calls Jeff King
2020-07-28 22:43   ` Jacob Keller
2020-07-28 23:31     ` Junio C Hamano
2020-07-28 20:26 ` [PATCH 09/11] strvec: update documention to avoid argv_array Jeff King
2020-07-28 20:27 ` [PATCH 10/11] strvec: drop argv_array compatibility layer Jeff King
2020-07-28 22:23   ` Junio C Hamano
2020-07-29  0:04     ` Jeff King
2020-07-29  0:37       ` Jeff King
2020-07-29  0:40         ` Jeff King
2020-07-29  0:47           ` Junio C Hamano
2020-07-29 16:54             ` Derrick Stolee
2020-07-29  0:44         ` Junio C Hamano
2020-07-29 16:22           ` Jeff King
2020-07-28 20:28 ` [PATCH 11/11] strvec: rename struct fields Jeff King
2020-07-28 21:16   ` Junio C Hamano
2020-07-28 21:18     ` Junio C Hamano
2020-07-29  6:55       ` Christian Couder
2020-07-29 16:34         ` Jeff King
2020-07-29 18:03           ` Junio C Hamano
2020-07-28 21:20     ` Jeff King
2020-07-28 22:45 ` [PATCH 0/11] renaming argv_array Jacob Keller
2020-07-29  0:06   ` Jeff King
2020-07-29  6:15 ` Christian Couder
2020-07-29  6:19   ` Christian Couder
2020-07-29 13:32   ` Eric Sunshine
2020-07-29 16:33   ` Jeff King
2020-08-11 16:08 ` René Scharfe
2020-08-11 18:28   ` Taylor Blau
2020-08-11 19:00   ` Junio C Hamano
2020-08-11 20:39     ` Jacob Keller
2020-08-11 21:03       ` Junio C Hamano
2020-08-12 12:42     ` Johannes Schindelin
2020-08-12 15:06   ` Jeff King
2020-08-12 15:10     ` Jeff King
2020-08-12 16:23       ` René Scharfe [this message]
2020-08-12 17:08         ` Jeff King
2020-08-12 18:18           ` René Scharfe
2020-08-12 19:57             ` Jeff King

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