makedumpfile-1.5.9: Introduce parallel compression processing.
louis.bouchard at canonical.com
Wed Oct 28 01:23:52 PDT 2015
Le 28/10/2015 07:31, Atsushi Kumagai a écrit :
> makedumpfile version 1.5.9 is released.
> Your comments/patches are welcome.
> Main new feature:
> o Parallel compression
> - Add the new option "--num-threads" to enable parallel compression
> for faster processing. This option intends parallel compression
> while --split intends parallel i/o, they try to solve different
> o Change the way to choose the non-cyclic mode
> - Add the new option "--work-dir" to specify the directory used to
> store the bitmap. This is the alternative to the combination of
> --non-cyclic and TMPDIR.
> o Support new kernels
> - The supported kernel is updated to 4.1 in this version.
> At first I'm going to extend the supported version to 4.2, but
> I found an issue that makedumpfile seems to exclude necessary pages
> by mistake on linux 4.2. When crash-7.1.3 reads that filtered dump file,
> the following message is shown.
> crash: page excluded: kernel virtual address: f3fe0000 type: "fill_task_struct"
> This will be fixed in the next version.
Have you fixed the 4.2 kernel issue already or you intend to work on it in the
Both Debian and Ubuntu run 4.2 kernel so if waiting for a fix is acceptable I
would rather bring in a 1.5.9 + patch version.
Software engineer, Cloud & Sustaining eng.
Ubuntu developer Debian Maintainer
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