Login | Register For Free | Help
Search for: (Advanced)

Mailing List Archive: Linux-HA: Users

realtime process priority

 

 

Linux-HA users RSS feed   Index | Next | Previous | View Threaded


Johan.Verrept at able

Oct 13, 2009, 3:28 AM

Post #1 of 3 (752 views)
Permalink
realtime process priority

Hi,

what exactly does this mean and how do I get my heartbeat processes to
run at realtime priorities? I am assuming this will make them a lot less
sensitive to general load on the machine.

04:02:26 heartbeat [2733]: info: Request to set pid 2733 to realtime ignored.
04:02:26 heartbeat [2732]: info: Request to set pid 2732 to realtime ignored.
04:02:26 heartbeat [2735]: info: Request to set pid 2735 to realtime ignored.
04:02:26 heartbeat [2734]: info: Request to set pid 2734 to realtime ignored.
04:02:27 heartbeat [2737]: info: Request to set pid 2737 to realtime ignored.
04:02:27 heartbeat [2736]: info: Request to set pid 2736 to realtime ignored.

Thanks,

Johan



_______________________________________________
Linux-HA mailing list
Linux-HA [at] lists
http://lists.linux-ha.org/mailman/listinfo/linux-ha
See also: http://linux-ha.org/ReportingProblems


dejanmm at fastmail

Oct 13, 2009, 5:12 AM

Post #2 of 3 (693 views)
Permalink
Re: realtime process priority [In reply to]

Hi,

On Tue, Oct 13, 2009 at 12:28:31PM +0200, Johan Verrept wrote:
>
> Hi,
>
> what exactly does this mean and how do I get my heartbeat processes to
> run at realtime priorities? I am assuming this will make them a lot less
> sensitive to general load on the machine.

True. This is the first time I see this reported. Normally,
realtime is enabled by default and most of platforms do support
it. There should be a warning on heartbeat start if that's not
the case.

There is also an option for heartbeat (-l) and a directive in
ha.cf (realtime) with which realtime may be disabled.

Thanks,

Dejan

> 04:02:26 heartbeat [2733]: info: Request to set pid 2733 to realtime ignored.
> 04:02:26 heartbeat [2732]: info: Request to set pid 2732 to realtime ignored.
> 04:02:26 heartbeat [2735]: info: Request to set pid 2735 to realtime ignored.
> 04:02:26 heartbeat [2734]: info: Request to set pid 2734 to realtime ignored.
> 04:02:27 heartbeat [2737]: info: Request to set pid 2737 to realtime ignored.
> 04:02:27 heartbeat [2736]: info: Request to set pid 2736 to realtime ignored.
>
> Thanks,
>
> Johan
>
>
>
> _______________________________________________
> Linux-HA mailing list
> Linux-HA [at] lists
> http://lists.linux-ha.org/mailman/listinfo/linux-ha
> See also: http://linux-ha.org/ReportingProblems
_______________________________________________
Linux-HA mailing list
Linux-HA [at] lists
http://lists.linux-ha.org/mailman/listinfo/linux-ha
See also: http://linux-ha.org/ReportingProblems


Johan.Verrept at able

Oct 13, 2009, 5:44 AM

Post #3 of 3 (696 views)
Permalink
Re: realtime process priority [In reply to]

On Tue, 2009-10-13 at 14:12 +0200, Dejan Muhamedagic wrote:
> True. This is the first time I see this reported. Normally,
> realtime is enabled by default and most of platforms do support
> it. There should be a warning on heartbeat start if that's not
> the case.

I had checked my kernel to see if this was enabled.

> There is also an option for heartbeat (-l) and a directive in
> ha.cf (realtime) with which realtime may be disabled.

Aaaah! My mistake, thank you for the hint. ha.cf contained realtime off.

J.

_______________________________________________
Linux-HA mailing list
Linux-HA [at] lists
http://lists.linux-ha.org/mailman/listinfo/linux-ha
See also: http://linux-ha.org/ReportingProblems

Linux-HA users RSS feed   Index | Next | Previous | View Threaded
 
 


Interested in having your list archived? Contact Gossamer Threads
 
  Web Applications & Managed Hosting Powered by Gossamer Threads Inc.