Just curious, is the program at the other end of the pipe a java program? If so, it might be going into "garbage collection" and becomes "deaf" during that period.
George > -----Original Message----- > From: [email protected] [mailto:rsyslog- > [email protected]] On Behalf Of Dražen Kacar > Sent: Tuesday, November 16, 2010 6:34 AM > To: rsyslog-users > Subject: Re: [rsyslog] Huge pauses when writing to FIFO > > Rainer Gerhards wrote: > > > I think I forgot to mention an important condition: by default, > ompipe works > > in nonblocking mode. So you need to set it to blocking mode for the > action in > > question. This is done via > > > > $OMPipeBlockingMode on > > I added that, just forgor to write it in the previous mail. The syntax > check passed ok and there are no errors generated from rsyslogd. > > > in front of the action, like here: > > $OMPipeBlockingMode on > > local1.* |/opt/foo/my_named_pipe > > I still have 30 second sleep in select() and there is a number of > write() > calls to FIFO (checked with lsof) before that which fail with EAGAIN. > > The output of "strace -f -e trace=file rsyslogd ..." shows: > > 25169 open("/opt/bulb/var/rsyslog/to_parser", > O_RDWR|O_NONBLOCK|O_LARGEFILE) = 5 > > Then I negated the condition in preparePipe() to: > > if(!pData->bBlocking) > mode |= O_NONBLOCK; > > and now strace doesn't show O_NONBLOCK and there is no sleep in > select(). > I'll run more comprehensive tests just to be sure, but this looks ok. > > > > I'm not aware of a repository with the newer autotools packages. I > > > didn't need them so far, so I wasn't looking. > > > > OK, thanks, so I probably need to dump the idea of working with a > "normal" > > git environment there and will developed based on a release tarball. > > There is rpmfind.net which will probably find the packages you want, > maybe > even for a Linux distribution you want it for. But the quality of the > packages isn't always as good as it could be, so I tend to stay away > from > random sources for production systems. I'd try it for the development > purposes, which is what you need. > > -- > .-. .-. Yes, I am an agent of Satan, but my duties are largely > (_ \ / _) ceremonial. > | > | [email protected] > _______________________________________________ > rsyslog mailing list > http://lists.adiscon.net/mailman/listinfo/rsyslog > http://www.rsyslog.com _______________________________________________ rsyslog mailing list http://lists.adiscon.net/mailman/listinfo/rsyslog http://www.rsyslog.com
