[j-nsp] JUNOS

[martin.mogensen at bt.com]

Brendan

You can try:
show system processes brief 

to see how much memory is marked as inactive. The percentage calculation considers inactive memory as used memory which strictly speaking is correct (this is managed by the FreeBSD that JUNOS run on top of). However, inactive memory will be freed up automatically by the router if needed. This way the percentage value can look bad even though the router still has plenty of inactive memory left it can free up as needed. 

If the inactive memory is indeed high and you want to monitor the percentage, you can lauch a memory intentive task, ie compression/decompression of large files, which will free up inactive memory so the calculation will become more representative. Naturally you should only do this if there is indeed a large amount off inactive memory - you should not risk to run out of memory. 

Cheers
Martin

-----Message d'origine-----
De : juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-bounces at puck.nether.net] De la part de Brendan Mannella
Envoyé : mardi 23 juin 2009 16:58
À : Sean Clarke
Cc : juniper-nsp at puck.nether.net
Objet : Re: [j-nsp] JUNOS

ibr1.ash> show route all

inet.0: 283638 destinations, 486468 routes (283619 active, 18 holddown, 2 hidden                                                                              )

ibr1.ash> show chassis routing-engine
Routing Engine status:
    Temperature                 30 degrees C / 86 degrees F
    CPU temperature             28 degrees C / 82 degrees F
    DRAM                       768 MB
    Memory utilization          89 percent
    CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     2 percent
      Interrupt                  0 percent
      Idle                      97 percent
    Model                          RE-5.0
    Serial ID                      
    Start time                     2008-11-23 14:53:50 EST
    Uptime                         211 days, 19 hours, 23 minutes, 19 seconds
    Load averages:                 1 minute   5 minute  15 minute
                                       0.05       0.10       0.04

I have a 2gig flash card installed, so is no issue.

I am just trying to figure out if its a software issue/bug causing this or its just the number of routes i have.

Brendan Mannella
President and CEO
TeraSwitch Networks Inc.
Office: 412.224.4333 x303
Toll-Free: 866.583.6338
Mobile: 412-592-7848
Efax: 412.202.7094



----- Original Message -----
From: "Sean Clarke" <sean at clarke-3.demon.nl>
To: "Brendan Mannella" <bmannella at teraswitch.com>
Sent: Tuesday, June 23, 2009 10:58:24 AM GMT -05:00 US/Canada Eastern
Subject: Re: [j-nsp] JUNOS

Hi Brendan

How many routes etc do you have   ?
The memory sounds a bit high utilised to me, if it stays at 91%.

There are many bug fixes from 9.1 to 9.5, of course, if you have a 1G flash card (or no flash card) then you can upgrade anyway ... the memory should not max out.

Typically the RE should be about 5% utilised, if the routes are stable

cheers



On 6/23/09 11:45 AM, Brendan Mannella wrote:
> Hello,
>
> I have two M7i routers with RE-400-768s. One is running 9.1R1.8 and 
> the other 8.3R4.3.
>
> They each have one transit link landed on them and very little IBGP/OSPF.
>
> The router with 9.1 on it has 91% memory usage while the 8.3 has 59%.
>
> Now I know the more recent code probably has more features and so 
> forth. But I am worried that maybe that version of code has a memory 
> leak or related issue.
>
> Does anyone know of any outstanding issues with 9.1R1.8?
>
> The router came with this version of code on it and I don¹t like the 
> fact that its R1.8 but I am worried about upgrading to a more stable 
> release as I don¹t want the memory maxed out.
>
> Any suggestions? What is the most stable code at this point for this 
> platform?
>
> Thanks in Advance.
>
> Brendan
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net 
> https://puck.nether.net/mailman/listinfo/juniper-nsp
>
>
>    

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