[f-nsp] Current Total Free Memory [...] is below 5 percent of Installed Memory.

["Rolf Hanßen"]

Hi,

we had a MLX running at 2% free for approx. one year without any issues
except Foundry told us there is no way to avoid the error logging.
The value did not change during that year while changing amount of active
vlans, VEs, IP routes.

Try reducing the number of IP routes (system-max ip-cache or system-max
ip-route) and vlans (system-max vlan xy) till you reach 6% free if you
want it to disappear.
Take care that "system-max vlan" will limit the amount of vlans but not
the IDs that are used.
But it will limit the IDs used for the virtual interfaces (i.e. you can
set it to 500, you will be able to use vlan 501 but not ve 501). This is
very interesting if you use the same ID for ve and vlan and reduce the
value below the range of vlans you use. ;)

kind regards
Rolf Hanßen

> Are you sure that message reflects TCAM and not general DRAM?
> Profiles aside, I believe MLX line cards contain 36 MB of TCAM... and
> ~22 MB free seems much more than 5%.  What's the output of "show
> cam-partition usage" ?
>
> 2011/12/14 Franz Georg Köhler <lists at openunix.de>:
>> Hello,
>>
>> I am currently seeing a lot of those messages on a MLX:
>>
>> WARN: Current Total Free Memory (22589440) on LP 1 is below 5 percent of
>> Installed Memory.
>>
>> Since the RAM usage seems to remain stable at 96% on this line card, I
>> wonder if:
>>
>> - it is generally considered to be save to run the LP modules at 4% of
>> free memory
>> - if so: can logging be configured to print warnings at another
>> treshhold?
>>  I could only find such a configuration directive for the CAM memory
>>  ("cam-partition logging").
>>
>>
>>
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