Hi Jonathan,
On 07/25/2011 04:44 PM, Jonathan Nieder wrote:
severity 635371 wishlist
tags 635371 + upstream moreinfo
quit
Hi Arnaud,
Arnaud Gelas wrote:
When compiling some libraries with gcc with all possible threads, the screen
freezed and even killing processes is difficult
How much memory was used? Did it go into swap? Is swap on a slow
disk? Is this behavior different from previous versions of the
kernel? Other notable details?
$ free -m
total used free shared buffers cached
Mem: 12041 11723 317 0 368 7170
-/+ buffers/cache: 4184 7856
Swap: 19322 301 19021
The swap is located a recent and decent disk.
I have just switched from another distribution (Fedora) where I never
had this problem before.
So I can't tell about previous kernel on debian.
(Note: it may have been fixed in more recent version of the kernel?)
The memory management subsystem or perhaps the I/O scheduler (?) is
known to not cope very well with low-memory situations when memory
being actively used needs to be reclaimed by swapping things out. In
an ideal world, we would want the system to remain responsive enough
to kill something, but in practice it is hard to figure out how to do
that and figure out what to keep in memory.
If some details inspire a method of chiseling away at the problem, I
can help direct you to an appropriate person upstream to discuss it
and point out patches to test. Otherwise, I will probably close the
bug, since it would not be clear how to use this knowledge to improve
the kernel.
I can test patches if anyone could see a solution.
Thanks for reporting.
Regards,
Jonathan
Thanks,
Arnaud
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