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Contributor
Posts: 25
Registered: ‎01-21-2011
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kernel: Approaching the limit on PV entries

Hello,

 

after installing the latest recommended JunOS for MX240(15.1R6.7), we see alot of these messages in the syslog:

 

kernel: Approaching the limit on PV entries, consider increasing either the vm.pmap.shpgperproc or the vm.pmap.pv_entry_max tunable.

 

It seems to have no impact on the services(didnt noticed any yet) - can we just ignore these messages?

 

Thanks for help in advance!

 

regards,

Freemind

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Distinguished Expert
Posts: 5,122
Registered: ‎03-30-2009

Re: kernel: Approaching the limit on PV entries

It appears to be a message from the underlying free BSD OS.  I don't find any listings in the Junos PR database for this so it is not a publicly reported harmless message yet.  I would consider opening a JTAC ticket to confirm if this requires a setting change in free BSD or can be ignored.

 

https://forums.freebsd.org/threads/17786/

Steve Puluka BSEET
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Senior IP Engineer - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
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Trusted Contributor
Posts: 75
Registered: ‎01-20-2017

Re: kernel: Approaching the limit on PV entries

Hi,

 

These log messages are non impacting. you can ignore these messages or if you want to supress these messages, you can do so with this command.

 

set system syslog file messages match "!(Approaching the limit on PV entries)"

 

HTH