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    SubjectRe: Memory accounting problem in 2.4.13, 2.4.14pre, and possibly 2.4.14
    On Tue, Nov 06, 2001 at 02:03:35PM -0800, Mike Fedyk wrote:
    > Hello,
    >
    > I am trying to track down a memory accounting problem I've seen ever since I
    > tried a 2.4.13 based kernel. Specifically I've noticed an overflow for the
    > "Cached" entry in /proc/meminfo, but also the numbers don't add up to the
    > total memory count. Shouldn't they add up? If they should, I haven't seen
    > one that does....
    >
    > I first noticed it on:
    > 2.4.13freeswan-1.91+ac5+preempt+netdev_random+vm_freeswap
    > 2.4.14-pre6+preempt+netdev_random+ext3_0.9.14-2414p5
    >
    > I thought it may be preempt so I tried:
    > 2.4.14-pre8+netdev_random-p7+xsched+ext3_0.9.14-2414p8+elevator
    >
    > But I still get the same problem with "Cached".
    >
    > Now I'm trying to see if it could be ext3 with:
    > 2.4.14-ext3-2.4-0.9.14-2414p8
    >
    > And I haven't noticed the problem after 16 hours uptime. Sometimes it would
    > show earlier, or later.
    >
    > >From current (2.4.14-ext3-2.4-0.9.14-2414p8) kernel:
    > total: used: free: shared: buffers: cached:
    > Mem: 261443584 254337024 7106560 0 58957824 76398592
    > Swap: 199815168 1228800 198586368
    > MemTotal: 255316 kB
    > MemFree: 6940 kB
    > MemShared: 0 kB
    > Buffers: 57576 kB
    > Cached: 73408 kB
    > SwapCached: 1200 kB
    > Active: 65048 kB
    > Inactive: 138040 kB
    > HighTotal: 0 kB
    > HighFree: 0 kB
    > LowTotal: 255316 kB
    > LowFree: 6940 kB
    > SwapTotal: 195132 kB
    > SwapFree: 193932 kB
    >
    > Subtracted from MemTotal should = 0:
    > MemFree: 6940 kB
    > Active: 65048 kB
    > Inactive: 138040 kB
    > = 45288 kB remaining
    >
    > Shouldn't these numbers add up to MemTotal?
    >
    > $ dpkg -l "*gcc*"|grep ii
    > ii gcc 2.95.4-8 The GNU C compiler.
    > ii gcc-2.95 2.95.4-0.01100 The GNU C compiler.
    >
    > On Debian Sid.
    >
    > I can provide more information upon request...
    >

    To continue the results...

    Now : 1 day(s), 15:47:31 running Linux 2.4.14-ext3-2.4-0.9.14-2414p8

    has also exibited the problem with cached.

    I'm going to try unpatched 2.4.14 now...

    Mike
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