lkml.org 
[lkml]   [2016]   [Jul]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [patch 4 15/22] timer: Remove slack leftovers
Hi Thomas,

On Fri, Jul 22, 2016 at 3:04 PM, Thomas Gleixner <tglx@linutronix.de> wrote:
>
> Well, this really depends on the TIMEOUT value you have. The code now does
> implicit batching for larger timeouts by queueing the timers into wheels with
> coarse grained granularity. As long as your new TIMEOUT value ends up in the
> same bucket then that's equivalent to the slack thing.
>
> Can you give me a ballpark of your TIMEOUT value?

Generally either 5 seconds, 10 seconds, or 25 seconds.

Are these okay? Is the 25 case substantially different from the 5 case?


> When you take the slow (queueing) path, it's still expensive, not as bad as
> the previous one, but not really cheap either.

Hmm, okay.

\
 
 \ /
  Last update: 2016-07-22 18:01    [W:0.238 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site