Re: [patch 0/7] timers: Footprint diet and NOHZ overhead mitigation

[Thomas Gleixner]

On Wed, 27 May 2015, Eric Dumazet wrote:
> I finally got back two hosts with 72 cpus where I can try your patches.

Waiting for your results :)

> I have one comment about socket TCP timers : They are re-armed very
> often, but they are never canceled (unless the socket is dismantled)
> 
> I am too lazy to search for the commit adding this stuff (before git),
> but I guess it helped a lot RPC sessions : No need to cancel a timer if
> we're likely to rearm it in the following 10 usec ;)

Right, but that's a 'cancel + rearm' in the timer core code, unless
the expiry time does not change.

Thanks,

	tglx

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/