Packet loss every 30.999 seconds

Kostik Belousov kostikbel at
Fri Dec 21 21:07:58 PST 2007

On Fri, Dec 21, 2007 at 05:43:09PM -0800, David Schwartz wrote:
> I'm just an observer, and I may be confused, but it seems to me that this is
> motion in the wrong direction (at least, it's not going to fix the actual
> problem). As I understand the problem, once you reach a certain point, the
> system slows down *every* 30.999 seconds. Now, it's possible for the code to
> cause one slowdown as it cleans up, but why does it need to clean up so much
> 31 seconds later?
> Why not find/fix the actual bug? Then work on getting the yield right if it
> turns out there's an actual problem for it to fix.
> If the problem is that too much work is being done at a stretch and it turns
> out this is because work is being done erroneously or needlessly, fixing
> that should solve the whole problem. Doing the work that doesn't need to be
> done more slowly is at best an ugly workaround.
> Or am I misunderstanding?

Yes, rewriting the syncer is the right solution. It probably cannot be done
quickly enough. If the yield workaround provide mitigation for now, it
shall go in.
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