Messages in this thread | | | Date | Sun, 2 Nov 2008 11:27:40 -0800 (PST) | From | Davide Libenzi <> | Subject | Re: epoll behaviour after running out of descriptors |
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On Sun, 2 Nov 2008, Olaf van der Spek wrote:
> On Sun, Nov 2, 2008 at 8:17 PM, Davide Libenzi <davidel@xmailserver.org> wrote: > > On Sun, 2 Nov 2008, Olaf van der Spek wrote: > > > >> On Sun, Nov 2, 2008 at 7:48 PM, Davide Libenzi <davidel@xmailserver.org> wrote: > >> > Why don't you grep for TIME_WAIT? > >> > >> Because I don't have access to the test environment at the moment. > > > > Here: > > > > http://tinyurl.com/5ay86v > > I know what TIME_WAIT is. I just think it's not applicable to this situation.
It is. You are saturating the port space, so no new POLLIN/accept events are sent (until some TIME_WAIT clears), so epoll_wait() returns nothing (or does not return, if INF timeo). Keeping only 1K (if this is what you meant with your *only* 1K) connections *alive*, does not mean the trail that does moving 1K connections leave, is free. If you ever played with things like httperf, you should know what I'm talking about.
- Davide
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