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    SubjectRe: [PATCH v2 0/5] Fix oom killer doesn't work at all if system have > gigabytes memory (aka CAI founded issue)


    ----- Original Message -----
    > (2011/05/31 10:33), CAI Qian wrote:
    > > Hello,
    > >
    > > Have tested those patches rebased from KOSAKI for the latest
    > > mainline.
    > > It still killed random processes and recevied a panic at the end by
    > > using root user. The full oom output can be found here.
    > > http://people.redhat.com/qcai/oom
    >
    > You ran fork-bomb as root. Therefore unprivileged process was killed
    > at first.
    > It's no random. It's intentional and desirable. I mean
    >
    > - If you run the same progream as non-root, python will be killed at
    > first.
    > Because it consume a lot of memory than daemons.
    > - If you run the same program as root, non root process and privilege
    > explicit
    > dropping processes (e.g. irqbalance) will be killed at first.
    Hmm, at least there were some programs were root processes but were killed
    first.
    [ pid] ppid uid total_vm rss swap score_adj name
    [ 5720] 5353 0 24421 257 0 0 sshd
    [ 5353] 1 0 15998 189 0 0 sshd
    [ 5451] 1 0 19648 235 0 0 master
    [ 1626] 1 0 2287 129 0 0 dhclient
    >
    > Look, your log says, highest oom score process was killed first.
    >
    > Out of memory: Kill process 5462 (abrtd) points:393 total-vm:262300kB,
    > anon-rss:1024kB, file-rss:0kB
    > Out of memory: Kill process 5277 (hald) points:303 total-vm:25444kB,
    > anon-rss:1116kB, file-rss:0kB
    > Out of memory: Kill process 5720 (sshd) points:258 total-vm:97684kB,
    > anon-rss:824kB, file-rss:0kB
    > Out of memory: Kill process 5457 (pickup) points:236 total-vm:78672kB,
    > anon-rss:768kB, file-rss:0kB
    > Out of memory: Kill process 5451 (master) points:235 total-vm:78592kB,
    > anon-rss:796kB, file-rss:0kB
    > Out of memory: Kill process 5458 (qmgr) points:233 total-vm:78740kB,
    > anon-rss:764kB, file-rss:0kB
    > Out of memory: Kill process 5353 (sshd) points:189 total-vm:63992kB,
    > anon-rss:620kB, file-rss:0kB
    > Out of memory: Kill process 1626 (dhclient) points:129
    > total-vm:9148kB, anon-rss:484kB, file-rss:0kB
    >
    >
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