I'm not an expert either. :-) The attached diff is against rsyslog 5.6.2, it also checks for sched_get_priority_max() which can be used to check the proper priority range for a given policy.
I've tested the patch on Linux and Solaris. Seems to work fine on both. Rainer Gerhards wrote: > I just committed the functionality: > > http://git.adiscon.com/?p=rsyslog.git;a=commitdiff;h=cc8237736d11b54a3d6089d8 > 36da7ccb6972a29c > > Note that I am far from being an autotools expert, so I would appreciate if > you could provide proper configure checks. I did only a very rough test of > the functionality. > > Thanks, > Rainer > > > -----Original Message----- > > From: [email protected] [mailto:rsyslog- > > [email protected]] On Behalf Of Dražen Kacar > > Sent: Thursday, December 16, 2010 10:48 PM > > To: rsyslog-users > > Subject: Re: [rsyslog] Losing UDP packages > > > > Rainer Gerhards wrote: > > > > I suppose it can be done, but pthread_setschedparam(pthread_self(), > > > > SCHED_FIFO, ...) is portable, simpler and better for my purposes. > > Also > > > > slightly dangerous, if one doesn't have enough processors for all > > RT > > > > threads. :-) > > > > > > > > > If that's all that is needed, I could very probably hack this > > together while > > > I wait for a longer running test... > > > > There are two parameters needed: > > 1. policy: probably a string that maps to SCHED_xxx, ie: > > fifo => SCHED_FIFO > > rr => SCHED_RR > > other => SCHED_OTHER > > > > The code for those mappings should probably be in the appropriate > > "#ifdef SCHED_xxx" guards. They should be defined if > > pthread_setschedparam() is available, but you never know. > > > > Ignore SCHED_SPORADIC for the time being. > > > > 2. priority (integer), goes into the third argument for > > pthread_setschedparam(). > > > > Without defaults for any of these parameters. If one of them is > > specified > > in the config file and the other is not, report an error. > > > > Add a configure check (it's possible you'd need -lrt or something > > similar), > > and that's about that. > > > > -- > > .-. .-. 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 -- .-. .-. Yes, I am an agent of Satan, but my duties are largely (_ \ / _) ceremonial. | | [email protected]
--- configure.ac.orig 2010-12-17 14:58:45.000000000 +0100 +++ configure.ac 2010-12-17 16:12:19.000000000 +0100 @@ -269,6 +269,33 @@ ) fi +AC_CHECK_FUNCS( + [pthread_setschedparam], + [ + rsyslog_have_pthread_setschedparam=yes + ], + [ + rsyslog_have_pthread_setschedparam=no + ] +) +AC_CHECK_HEADERS( + [sched.h], + [ + rsyslog_have_sched_h=yes + ], + [ + rsyslog_have_sched_h=no + ] +) +if test "$rsyslog_have_pthread_setschedparam" = "yes" -a "$rsyslog_have_sched_h" = "yes"; then + save_LIBS=$LIBS + LIBS= + AC_SEARCH_LIBS(sched_get_priority_max, rt) + IMUDP_LIBS=$LIBS + AC_SUBST(IMUDP_LIBS) + LIBS=$save_LIBS +fi + # klog AC_ARG_ENABLE(klog, --- config.h.in.orig 2010-12-17 16:02:54.000000000 +0100 +++ config.h.in 2010-12-17 16:04:03.000000000 +0100 @@ -79,6 +79,12 @@ /* Define to 1 if you have the `gettimeofday' function. */ #undef HAVE_GETTIMEOFDAY +/* Define to 1 if you have the `pthread_setschedparam' function. */ +#undef HAVE_PTHREAD_SETSCHEDPARAM + +/* Define to 1 if you have the <sched.h> file. */ +#undef HAVE_SCHED_H + /* Define to 1 if you have the <inttypes.h> header file. */ #undef HAVE_INTTYPES_H --- plugins/imudp/Makefile.am.orig 2010-12-17 15:02:14.000000000 +0100 +++ plugins/imudp/Makefile.am 2010-12-17 15:02:33.000000000 +0100 @@ -3,4 +3,4 @@ imudp_la_SOURCES = imudp.c imudp_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) imudp_la_LDFLAGS = -module -avoid-version -imudp_la_LIBADD = +imudp_la_LIBADD = $(IMUDP_LIBS)
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