Re: [nsp] Fast Mem on an RSP4

From: Shepherd Kendall (skendall@UU.NET)
Date: Fri Sep 10 1999 - 11:15:33 EDT


-] Deepak Jain [-

 ]
 ] Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
 ] Processor 60AD9EE0 122839328 116858180 5981148 4160012 268352
 ] Fast 60AB9EE0 131072 125944 5128 5128 5084
 ]
 ] --
 ]
 ] Of 128KB of memory, this router has 5K free. I am assuming it is used
 ] for packet buffers or something dynamically allocated, but I would guess
 ] that it is running pretty close to the edge with these numbers.

 you'll find that the "fast" memory entry is the same on any Cisco (at least
 any i've seen). according to Cisco, this 128k block of "fast" memory is
 carved out of the DRAM and used specifically for IDB storage -- if you do
 a "sho mem fast" you'll see this is pretty obvious.

 as for running low, you'd have to allocate far more interfaces than seems
 reasonable on the router to run out of space -- and if you do (according to
 Cisco -- haven't confirmed), blocks of DRAM are used for the overflow.

 -- shep



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