Top Document: comp.dcom.sys.cisco Frequently Asked Questions (FAQ)
Buffer statistics may be obtained with:
mit2-gw.near.net>sh buffers
Buffer elements:
433 in free list (500 max allowed)
82320311 hits, 0 misses, 0 created
Small buffers, 104 bytes (total 202, permanent 120):
185 in free list (20 min, 250 max allowed)
34289219 hits, 4297 misses, 1307 trims, 1389 created
Middle buffers, 600 bytes (total 104, permanent 90):
102 in free list (10 min, 200 max allowed)
6829533 hits, 1432 misses, 483 trims, 497 created
Big buffers, 1524 bytes (total 90, permanent 90):
90 in free list (5 min, 300 max allowed)
3403884 hits, 56 misses, 1 trims, 1 created
Large buffers, 5024 bytes (total 5, permanent 5):
5 in free list (0 min, 30 max allowed)
49984 hits, 13 misses, 20 trims, 20 created
Huge buffers, 18024 bytes (total 0, permanent 0):
0 in free list (0 min, 4 max allowed)
0 hits, 0 misses, 0 trims, 0 created
5683 failures (0 no memory)
You can interpret them:
Total Number of buffers of that size that exist.
Free Number of free buffers.
Max Maximum size that the free list can grow to before we start
throwing them away.
Hit Buffer got used.
Miss Someone requested a buffer and we had to go carve it up out of
free memory. If we couldn't because we were at interrupt
level, it's also an allocation failure. If we couldn't
because we were out of memory, then it's also a ``no memory''
failure.
Trim There are more free buffers on the free list than there need
to be and we threw some away.
Create Number of buffers we created after a miss.
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