[f-nsp] "Low pool memory, Pool(2-Global) below 5%" on Brocade MLX box

[Eldon Koyle]

Could you also provide the output of 'show default values'?

You may need to change your cam-partition profile.

-- 
Eldon

On Tue, Mar 8, 2016 at 8:13 AM, Chris Hellkvist via foundry-nsp
<foundry-nsp at puck.nether.net> wrote:
> Dear all,
>
> recently we connected another upstream to a Brocade MLX box.
>
> We noticed that the MLX was not learning all routers from this BGP
> peer both on the IPv4 and IPv6 session. Looking for the root cause we
> found the following entries in the log of the box:
> Mar  7 11:46:59:W:System: Low pool memory, Pool(2-Global) below 5%,
> total memory(1073741824), available memory(53534720) on MP
> Mar  7 11:46:58:W:System: Low physical memory, Pool(2-Global) below
> 5%, total memory(1073741824), available memory(53235712) on MP
>
> I'm a bit worried because the system has not that many BGP sessions
> active (around 8 while 4 peers send a full table that is reduces to
> around 390k routes in the RIB/FIB using prefix lists).
>
> After removing the BGP peers the free memory went to arund 7%, however
> prior to the configuration we have never had any warning regarding the
>  usual 10% threshold).
>
> Looking at the memory histogram i can see that most memory is consumed
> by the following processes:
> bgp                          1221            106342047
> bgp_io                       3925            473596101
>
> Any idea how to reduce the memory footprint of bgp_io or to free up
> more space by adjusting some system-max variables? Or any other
> options than replacing the box with some new gear (luckily this will
> happen  end of 2016).
>
> Thanks,
> Chris
>
> For the recordds, the modules we have in place and a sh ve of the system:
> SSH at CRBR13-F#sh module
> Module                                                      Status
>                   Ports    Starting MAC
> M1 (left ):NI-MLX-MR Management Module                      Active
> M2 (right):NI-MLX-MR Management Module                      Standby(Ready State)
> F1: NI-X-SF  Switch Fabric Module                           Active
> F2: NI-X-SF  Switch Fabric Module                           Active
> F3: NI-X-SF  Switch Fabric Module                           Active
> S1: NI-MLX-10Gx4 4-port 10GbE Module
> CARD_STATE_UP                4        001b.ed17.d000
> S2: NI-MLX-10Gx4 4-port 10GbE Module
> CARD_STATE_UP                4        001b.ed17.d030
> S3: NI-MLX-10Gx4 4-port 10GbE Module
> CARD_STATE_UP                4        001b.ed17.d060
> S4: NI-MLX-10Gx4 4-port 10GbE Module
> CARD_STATE_UP                4        001b.ed17.d090
> S5: NI-MLX-10Gx4 4-port 10GbE Module
> CARD_STATE_UP                4        001b.ed17.d0c0
>
> SSH at CRBR13-F#sh ve
> System Mode: MLX
> Chassis: NetIron 8-slot (Serial #: A60532F06T,  Part #: 35549-000C)
> NI-X-SF  Switch Fabric Module 1 (Serial #: SA38070273,  Part #: 35523-300C)
> FE 1: Type fe200,  Version 2
> FE 3: Type fe200,  Version 2
> Switch Fabric Module 1 Up Time is 286 days 23 hours 8 minutes 55 seconds
> NI-X-SF  Switch Fabric Module 2 (Serial #: SA13070172,  Part #: 35523-300C)
> FE 1: Type fe200,  Version 2
> FE 3: Type fe200,  Version 2
> Switch Fabric Module 2 Up Time is 286 days 23 hours 8 minutes 55 seconds
> NI-X-SF  Switch Fabric Module 3 (Serial #: SA13080287,  Part #: 35523-301A)
> FE 1: Type fe200,  Version 2
> FE 3: Type fe200,  Version 2
> Switch Fabric Module 3 Up Time is 286 days 23 hours 8 minutes 55 seconds
> ==========================================================================
> SL M1: NI-MLX-MR Management Module Active (Serial #: S10526F06N, Part
> #:    35524-103J):
> Boot     : Version 5.6.0T165 Copyright (c) 1996-2014 Brocade
> Communications Systems, Inc.
> Compiled on Sep 20 2013 at 16:42:38 labeled as xmprm05600
>  (516258 bytes) from boot flash
> Monitor  : Version 5.7.0T165 Copyright (c) 1996-2014 Brocade
> Communications Systems, Inc.
> Compiled on May  5 2014 at 10:41:24 labeled as xmb05700
>  (537647 bytes) from code flash
> IronWare : Version 5.7.0cT163 Copyright (c) 1996-2014 Brocade
> Communications Systems, Inc.
> Compiled on Feb 25 2015 at 20:44:00 labeled as xmr05700c
>  (9651771 bytes) from Primary
> Board ID : 00 MBRIDGE Revision : 37
> 916 MHz Power PC processor 7447A (version 8003/0101) 166 MHz bus
> 512 KB Boot Flash (AM29LV040B), 32 MB Code Flash (MT28F128J3)
> 1024 MB DRAM INSTALLED
> 1024 MB DRAM ADDRESSABLE
> Active Management uptime is 286 days 23 hours 8 minutes 55 seconds
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