From: Marcin 'Qrczak' Kowalczyk <qrczak@knm.org.pl>
To: linux-fsdevel@vger.kernel.org
Subject: Bug: epoll_wait timeout is shorter than requested
Date: Mon, 17 Jan 2005 12:15:06 +0100 [thread overview]
Message-ID: <87651wl32d.fsf@qrnik.zagroda> (raw)
A program to exhibit the bug:
----------------
#include <sys/epoll.h>
#include <sys/time.h>
#include <stdio.h>
int main(void) {
int epoll_fd;
struct timeval time1, time2;
struct epoll_event event;
epoll_fd = epoll_create(16);
gettimeofday(&time1, NULL);
epoll_wait(epoll_fd, &event, 1, 1000);
//poll(NULL, 0, 1000);
gettimeofday(&time2, NULL);
printf("start: %d.%06d\n", time1.tv_sec, time1.tv_usec);
printf("stop: %d.%06d\n", time2.tv_sec, time2.tv_usec);
return 0;
}
----------------
It should wait one second (at least). Example output on Linux-2.6.10:
start: 1105958820.439410
stop: 1105958821.438636
With poll used instead of epoll the timeout is OK:
start: 1105958827.975209
stop: 1105958828.975944
Is this list a good place to report this?
--
__("< Marcin Kowalczyk
\__/ qrczak@knm.org.pl
^^ http://qrnik.knm.org.pl/~qrczak/
next reply other threads:[~2005-01-17 11:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-17 11:15 Marcin 'Qrczak' Kowalczyk [this message]
2005-01-17 11:48 ` Bug: epoll_wait timeout is shorter than requested Jamie Lokier
2005-01-17 13:41 ` Marcin 'Qrczak' Kowalczyk
2005-01-17 14:33 ` Jamie Lokier
2005-01-17 14:43 ` Jamie Lokier
2005-01-17 16:18 ` Marcin 'Qrczak' Kowalczyk
2005-01-17 16:48 ` Jamie Lokier
2005-01-18 23:27 ` Marcin 'Qrczak' Kowalczyk
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