<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">RE: [syslog-ng]Strang behaviour of syslog-ng (and my = program) Hi Bazsi,
Thanks for your reply first of all!
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
= =20
= read and = process the message #normal
}
}
= =20
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_______________________________________________
syslog-ng maillist - = syslog-ng@lists.balabit.hu
https://lists.balabit.hu/mailman/listinfo/syslog-ng
Frequently asked questions at http://www.campin.net/syslog-ng/faq.html