Bug#695182: Re: Bug#695182: linux-image-3.2.0-4-686-pae: Write couple of 1GB files for OOM crash
An observation that may help in solving this issue. Using
while :; do free -lm; sleep 5; done
while writing the files, I see the "buffers" and "cached" values
increasing; then "buffers" start decreasing, eventually down to zero;
then soon after, OOM starts. The "free" or "low" or "high" values do not
seem to show anything unusual.
Cheers, Paul
Paul Szabo psz@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of Sydney Australia
Extract from output:
total used free shared buffers cached
Mem: 62941 1586 61354 0 61 1359
Mem: 62941 2143 60797 0 61 1907
Mem: 62941 2652 60288 0 62 2407
Mem: 62941 3205 59735 0 63 2951
Mem: 62941 3743 59197 0 63 3483
Mem: 62941 4275 58665 0 64 4007
Mem: 62941 4791 58149 0 64 4511
Mem: 62941 5338 57602 0 65 5049
Mem: 62941 5835 57105 0 65 5538
Mem: 62941 6332 56608 0 66 6027
Mem: 62941 6837 56103 0 66 6524
Mem: 62941 7332 55608 0 67 7007
Mem: 62941 7815 55125 0 67 7482
Mem: 62941 8310 54630 0 68 7970
Mem: 62941 8820 54120 0 68 8471
Mem: 62941 9280 53660 0 69 8922
Mem: 62941 9779 53161 0 69 9413
Mem: 62941 10231 52709 0 59 9868
Mem: 62941 10736 52204 0 59 10366
Mem: 62941 11105 51835 0 48 10741
Mem: 62941 11585 51355 0 41 11223
Mem: 62941 12074 50866 0 36 11709
Mem: 62941 12544 50396 0 23 12183
Mem: 62941 13021 49919 0 24 12653
Mem: 62941 13515 49425 0 8 13152
Mem: 62941 13978 48962 0 9 13609
Mem: 62941 14459 48481 0 1 14091
Mem: 62941 14941 47999 0 0 14566
Mem: 62941 15409 47531 0 0 15028
Mem: 62941 15858 47082 0 0 15487
Mem: 62941 16251 46689 0 0 15873
Mem: 62941 16392 46548 0 0 16017
Mem: 62941 16593 46347 0 0 16215
Mem: 62941 16730 46210 0 0 16350
Mem: 62941 16808 46132 0 0 16429
Mem: 62941 16839 46101 0 0 16460
Mem: 62941 16855 46085 0 0 16476
Mem: 62941 16843 46097 0 0 16487
Mem: 62941 17121 45819 0 0 16779
Mem: 62941 17342 45598 0 0 16998
Mem: 62941 17491 45449 0 0 17146
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