08-10-2011 03:36 AM - edited 03-07-2019 01:37 AM
08-10-2011 03:58 AM
This document might interest you:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_tech_note09186a00800a6f3a.shtml
Unless you are not seeing "%SYS-2-MALLOCFAIL: Memory allocation of... falied ....... " error on your device, your switch is not actually running out of memory and it should be fine.
And for the misses which you see in buffers, please find the explanation:
· On the buffer statistics, the misses identifies the number of times a buffer has
been requested and the processor detected that additional buffers are required(i.e. the
number of buffers in the free list and it dropped below "min"). The misses counter
represents the number of times the processor has been forced to create additional
buffers.
· When there are no more buffers in the interface buffer free list, the device
goes to the public buffer pools as a fallback. Performance is not impacted in case of a
fallback.
· Misses are part of the expected behavior of the device and the buffer counters
are cleared on reload
Unless you see buffer failures in the output, you can be sure that there are no issues affecting the switch.
Cheers,
Sweta
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08-10-2011 04:48 AM
Is 32% memory utilization normal then ? I am asking from a prespective of proactive performance improvement rather then reactive support.
08-10-2011 08:49 AM
Yeah. 32% is normal for 3560 platform. The range is around 25-45%. I have even seen cases where 70% memory utilization on 3560 was working fine.
Hope that answers your query.
Cheers
Sweta
P.S. Please rate helpful answers.
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