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http://issues.apache.org/bugzilla/show_bug.cgi?id=36636 ------- Additional Comments From [EMAIL PROTECTED] 2005-09-14 21:32 ------- Thank you so much for your help! I put a check for f->c->aborted in core.c:core_output_filter and thereby reduced the number of timed out writes to one. But the core issue still remains. I am sending this prepared PROPFIND which causes a large answer, and each request will just stop sending ACKs in the middle of the transaction. In about 1 in 10 cases (or so), the behaviour changes and the poll() locks, it is always with the same data to write, with the exact same packets being sent by the client. A "normal" situation looks like this: 20:52:09.407647 [ffffe410] writev(8, [...], 3) = 3686 <0.000013> 20:52:09.409004 [ffffe410] writev(8, [{"1f5e\r\n", 6}, ...], 4) = 5074 <0.000014> 20:52:09.409095 [ffffe410] poll([{fd=8, events=POLLOUT, revents=POLLERR|POLLHUP}], 1, 300000) = 1 <0.246947> 20:52:09.656085 [ffffe410] writev(8, [...], 3) = -1 EPIPE (Broken pipe) <0.000013> 20:52:09.656163 [ffffe410] --- SIGPIPE (Broken pipe) @ 0 (0) --- This I can strace all the time, but occasionally, it is this: 20:57:26.463493 [ffffe410] writev(8, [...], 4) = 1800 <0.000014> 20:57:26.463608 [ffffe410] poll([{fd=8, events=POLLOUT, revents=POLLOUT}], 1, 300000) = 1 <0.011306> 20:57:26.474956 [ffffe410] writev(8, [...], 3) = 6250 <0.000022> 20:57:26.476328 [ffffe410] writev(8, [{"1f5e\r\n", 6},...], 4) = 2510 <0.000012> 20:57:26.476424 [ffffe410] poll([{fd=8, events=POLLOUT}], 1, 300000) = 0 <299.851111> In the latter case, poll does not return the POLLERR. The connection is then in CLOSED_WAIT, after a while, it goes to LAST_ACK (while the send-Q is 20k). I read something about the behaviour on http://www.ussg.iu.edu/hypermail/linux/kernel/0407.3/0495.html but I'm not sure if this is intended in this case. Is it the kernel or apache that is loosing track of the FD? Why is the kernel not signalling the SIGPIPE / POLLERR? -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
