RE: [nsp] Buffers settings on GEIP controller (7500 router)

From: Martin, Christian (CMartin@mercury.balink.com)
Date: Fri Jul 14 2000 - 17:02:23 EDT


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.
>



This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:12:14 EDT