Hi Bazsi, Thanks for your reply first of all! And sorry for the second email in HTML secondly. This one should be ok (I tested :-). Ok, let's go to the point. I've never used strace but I'll try it. Yes, my program is using buffer and actually that's the first thing I checked. But I'm pretty sure it's not there. This is somewhat related to pipe openning. If I make sure syslog-ng opens the pipe before my program, then everything is OK. The code in my program is something like this: . . initializing . . while(1) { open pipe #block here until syslog-ng open the pipe while(1) { select on the pipe #block here until the pipe is ready for read or timeout (5 sec) next if timeout last if other side close the pipe #jump out the loop and try to open pipe again read and process the message #normal } } Bazsi, you see anything wrong here? Thanks, Andy -----Original Message----- From: Balazs Scheidler [mailto:bazsi@balabit.hu] Sent: Monday, July 15, 2002 10:59 AM To: syslog-ng@lists.balabit.hu Subject: Re: [syslog-ng]Strang behaviour of syslog-ng (and my program) On Mon, Jul 15, 2002 at 10:32:08AM -0400, Antai Ning wrote:

Hi Gents,

I'm posting the question again because I really need an answer for it,

Thanks a lot, can you check whether strace shows anything insane? are you using buffering in your perl program? syslog-ng uses a read/write pipe, and writes messages as soon as the pipe becomes writable. if the pipe is not writable (as indicated by poll), messages are buffered in a fifo, whose size is controlled by log_fifo_size(). -- Bazsi PGP info: KeyID 9AF8D0A9 Fingerprint CD27 CFB0 802C 0944 9CFD 804E C82C 8EB1

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