Although I've never heard of per-VIP buffer settings, the VIPs on this
router seems not to follow the global buffer configuration commands...
I/O memory may be the issue. The GEIP 'show mem' shows that the 8Mb SRAM is
fully used:
VIP-Slot4>show mem
Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
Processor 6068F1A0 127340704 25912004 101428700 101128988
101112860
PCI 30000000 8388608 8382396 6212 6212 3988
RSP has less fast memory, but it's not fully used:
router# show mem
Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
Processor 61235EA0 249340256 22513572 226826684 224872320
224663032
Fast 61215EA0 131072 93560 37512 37512 37468
Data rate across Cybus is high (70%) but seems to be holding nice.
Rubens Kuhl Jr.
-----Original Message-----
From: Martin, Christian [mailto:CMartin@mercury.balink.com]
Sent: sexta-feira, 14 de julho de 2000 18:02
To: 'Rubens Kuhl Jr.'; cisco-nsp
Subject: RE: [nsp] Buffers settings on GEIP controller (7500 router)
Rubens,
You are looking at global particle pool information. You can thus increase
the global data. I don't know that you can do it on a per-VIP basis.
You can do something like this:
buffers big permanent 1000
buffers big max-free 1500
buffers big min-free 500
Note that you will need to be sure that you have enough I/O (MEMD) memory to
do this. What is the data rate across the CyBUS? 'show contr cbus util'
should reveal some things.
regards,
chris
> -----Original Message-----
> From: Rubens Kuhl Jr. [mailto:rkuhljr@uol.com.br]
> Sent: Friday, July 14, 2000 4:26 PM
> To: cisco-nsp
> Subject: [nsp] Buffers settings on GEIP controller (7500 router)
>
>
>
>
> I'm noticing a very large buffer miss rate on a GEIP controller (very
> similar to a VIP2-50 with a Gigabit port adapter):
>
> Public buffer pools:
> Small buffers, 104 bytes (total 25, permanent 25):
> 25 in free list (20 min, 60 max allowed)
> 2 hits, 0 misses, 0 trims, 0 created
> 0 failures (0 no memory)
> Middle buffers, 600 bytes (total 15, permanent 15):
> 15 in free list (10 min, 30 max allowed)
> 8 hits, 0 misses, 0 trims, 0 created
> 0 failures (0 no memory)
> Big buffers, 1524 bytes (total 100, permanent 5):
> 6 in free list (5 min, 10 max allowed)
> 2547640 hits, 861395 misses, 2231939 trims, 2232034 created
> 104574 failures (0 no memory)
> VeryBig buffers, 4520 bytes (total 148, permanent 50):
> 148 in free list (40 min, 300 max allowed)
> 104574 hits, 112 misses, 21 trims, 119 created
> 0 failures (0 no memory)
> Large buffers, 5024 bytes (total 0, permanent 0):
> 0 in free list (0 min, 5 max allowed)
> 0 hits, 0 misses, 0 trims, 0 created
> 0 failures (0 no memory)
> Huge buffers, 18024 bytes (total 1, permanent 1):
> 1 in free list (0 min, 2 max allowed)
> 0 hits, 0 misses, 0 trims, 0 created
> 0 failures (0 no memory)
>
> The buffer settings are very different from the RSP, and I
> think that's not
> only because of particle pool memory allocation that the VIP
> does. How to
> set buffer parameters for VIP/GEIP ?
>
>
> Rubens Kuhl Jr.
>
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