[PATCH 0/3] makedumpfile: Reduce the risk of OOM.

[bhe at redhat.com]

On 06/30/14 at 07:45am, Atsushi Kumagai wrote:
> >Hi Atsushi,
> >
> >Since complaint has been got from our user about the oom issue, and it's
> >still a little longer time to get to 1.5.7, could you please merge this
> >patchset firstly to devel branch, then we can back port it with a valid
> >commit id which will be consistent?
> 
> I've done it, here you are:
> 
> http://git.code.sf.net/p/makedumpfile/code
>     - [PATCH 3/3] Stop maximizing the bitmap buffer to reduce the risk of OOM. (by Atsushi Kumagai) 0b73282
>     - [PATCH 2/3] Move counting pfn_memhole for cyclic mode. (by Atsushi Kumagai) 2648a8f
>     - [PATCH 1/3] Remove the 1st bitmap buffer from the ELF path in cyclic mode. (by Atsushi Kumagai) 16b94ab

Got it!  Thanks a lot, Atsushi!

> 
> 
> Thanks
> Atsushi Kumagai
> 
> 
> >Thanks
> >Baoquan
> >
> >On 06/10/14 at 04:51am, Atsushi Kumagai wrote:
> >> Hello,
> >>
> >> makedumpfile tries maximizing the bitmap buffer size to get the
> >> best performance, but it occasionally cause OOM because the safe
> >> limit is variable and it can be too aggressive depending on the
> >> situation.
> >>
> >> I think reliability is more important than performance for dump
> >> tools, so I decided to remove the maximization. I don't worry
> >> about performance degradation, please see [PATCH 3/3].
> >>
> >> If there is no objection, I'll merge this patch into v1.5.7.
> >>
> >> BTW, an expert user still can try to maximize the bitmap buffer with
> >> --cyclic-buffer option.
> >>
> >> Atsushi Kumagai (3):
> >>       Remove the 1st bitmap buffer from the ELF path in cyclic mode.
> >>       Move counting pfn_memhole for cyclic mode.
> >>       Stop maximizing the bitmap buffer to reduce the risk of OOM.
> >>
> >>  makedumpfile.8 |   1 -
> >>  makedumpfile.c | 117
> >++++++++++++++++++++------------------------------------------------------------------------------
> >>  print_info.c   |   1 -
> >>  3 files changed, 24 insertions(+), 95 deletions(-)
> >>
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