Buffer errors (misses)

Discussion in 'Cisco' started by fugowey, Mar 21, 2007.

  1. fugowey

    fugowey Guest

    Hi all,

    I've got some buffer errors on an 1811 - how serious is this?

    Thank you!


    Buffer elements:
    1117 in free list (500 max allowed)
    9750624 hits, 0 misses, 1119 created

    Public buffer pools:
    Small buffers, 104 bytes (total 50, permanent 50, peak 1003 @ 4d10h):
    47 in free list (20 min, 150 max allowed)
    3183318 hits, 856 misses, 1363 trims, 1363 created
    0 failures (0 no memory)
    Middle buffers, 600 bytes (total 93, permanent 25, peak 227 @ 1d20h):
    22 in free list (10 min, 150 max allowed)
    1995380 hits, 991 misses, 1071 trims, 1139 created
    317 failures (0 no memory)
    Big buffers, 1536 bytes (total 50, permanent 50, peak 89 @ 1d20h):
    50 in free list (5 min, 150 max allowed)
    1037254 hits, 52 misses, 78 trims, 78 created
    22 failures (0 no memory)
    VeryBig buffers, 4520 bytes (total 10, permanent 10, peak 11 @ 1d20h):
    10 in free list (0 min, 100 max allowed)
    16 hits, 6 misses, 1 trims, 1 created
    6 failures (0 no memory)
    Large buffers, 5024 bytes (total 1, permanent 0, peak 1 @ 1d20h):
    1 in free list (0 min, 10 max allowed)
    0 hits, 6 misses, 16 trims, 17 created
    6 failures (0 no memory)
    Huge buffers, 18024 bytes (total 1, permanent 0, peak 1 @ 1d20h):
    1 in free list (0 min, 4 max allowed)
    0 hits, 6 misses, 16 trims, 17 created
    6 failures (0 no memory)

    Interface buffer pools:
    Async1 buffers, 1500 bytes (total 10, permanent 10):
    0 in free list (0 min, 10 max allowed)
    10 hits, 0 fallbacks
    10 max cache size, 5 in cache
    174 hits in cache, 0 misses in cache
    Dot11Radio0Psp buffers, 1680 bytes (total 80, permanent 80):
    80 in free list (0 min, 80 max allowed)
    28998 hits, 0 fallbacks
    Dot11Radio1Psp buffers, 1680 bytes (total 80, permanent 80):
    80 in free list (0 min, 80 max allowed)
    0 hits, 0 fallbacks
    SEC Eng Packet buffers, 1700 bytes (total 256, permanent 256):
    0 in free list (0 min, 256 max allowed)
    256 hits, 0 fallbacks
    256 max cache size, 256 in cache
    0 hits in cache, 0 misses in cache
    Dot11Radio0 buffers, 2400 bytes (total 96, permanent 96):
    32 in free list (0 min, 96 max allowed)
    3166578 hits, 0 fallbacks
    Dot11Radio1 buffers, 2400 bytes (total 96, permanent 96):
    32 in free list (0 min, 96 max allowed)
    64 hits, 0 fallbacks

    Header pools:
    Header buffers, 0 bytes (total 384, permanent 384):
    0 in free list (0 min, 512 max allowed)
    384 hits, 0 misses, 0 trims, 0 created
    0 failures (0 no memory)
    384 max cache size, 384 in cache
    4779774 hits in cache, 0 misses in cache
    Dot11Radio0 buffers, 0 bytes (total 300, permanent 300):
    150 in free list (0 min, 300 max allowed)
    150 hits, 0 misses
    150 max cache size, 150 in cache
    0 hits in cache, 0 misses in cache
    Dot11Radio1 buffers, 0 bytes (total 300, permanent 300):
    150 in free list (0 min, 300 max allowed)
    150 hits, 0 misses
    150 max cache size, 150 in cache
    0 hits in cache, 0 misses in cache

    Particle Clones:
    1024 clones, 1680 hits, 0 misses

    Public particle pools:
    F/S buffers, 256 bytes (total 384, permanent 384):
    128 in free list (128 min, 1024 max allowed)
    256 hits, 0 misses, 0 trims, 0 created
    0 failures (0 no memory)
    256 max cache size, 256 in cache
    1680 hits in cache, 0 misses in cache
    Normal buffers, 1676 bytes (total 512, permanent 512):
    384 in free list (128 min, 1024 max allowed)
    460 hits, 21 misses, 63 trims, 63 created
    0 failures (0 no memory)
    128 max cache size, 128 in cache
    0 hits in cache, 0 misses in cache

    Private particle pools:
    SEC Eng Particle Header buffers, 256 bytes (total 256, permanent 256):
    0 in free list (0 min, 256 max allowed)
    256 hits, 0 fallbacks
    256 max cache size, 256 in cache
    0 hits in cache, 0 misses in cache
    FastEthernet0 buffers, 1664 bytes (total 384, permanent 384):
    0 in free list (0 min, 384 max allowed)
    384 hits, 0 fallbacks
    384 max cache size, 256 in cache
    14283301 hits in cache, 0 misses in cache
    FastEthernet1 buffers, 1664 bytes (total 384, permanent 384):
    0 in free list (0 min, 384 max allowed)
    384 hits, 0 fallbacks
    384 max cache size, 256 in cache
    14950188 hits in cache, 0 misses in cache
    FastEthernet2 buffers, 1676 bytes (total 128, permanent 128):
    0 in free list (0 min, 128 max allowed)
    128 hits, 0 fallbacks
    128 max cache size, 64 in cache
    17675415 hits in cache, 33 misses in cache
    SEC Eng Particle buffers, 1700 bytes (total 256, permanent 256):
    0 in free list (0 min, 256 max allowed)
    256 hits, 0 misses
    256 max cache size, 256 in cache
    2499055 hits in cache, 0 misses in cache
     
    fugowey, Mar 21, 2007
    #1
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  2. fugowey

    Guest

    On 21 Mar, 14:49, "fugowey" <> wrote:
    > Hi all,
    >
    > I've got some buffer errors on an 1811 - how serious is this?
    >
    > Thank you!
    >
    > Buffer elements:
    > 1117 in free list (500 max allowed)
    > 9750624 hits, 0 misses, 1119 created
    >
    > Public buffer pools:
    > Small buffers, 104 bytes (total 50, permanent 50, peak 1003 @ 4d10h):
    > 47 in free list (20 min, 150 max allowed)
    > 3183318 hits, 856 misses, 1363 trims, 1363 created

    <snipped>

    Buffer misses happen by design. They are nothing to worry about.

    As far as I know the "Public buffer pools: " section is the only part
    you
    can do anything with.

    However - a large proportion of misses on a heavily loaded router will
    I
    feel affect the performance and I manually adjust buffers to
    reduce to reasonable levels.

    Failures are not so good and more or less indicate a packet drop.
    You will usually see corresponding increments in
    interface drops/ignores/throttles.

    In your case I may consider increasing the
    buff middle min-free a bit if I had some memory free.


    Your miss/failure counters are low.
     
    , Mar 21, 2007
    #2
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