Hi all, Apologies if I'm confusing things, but I think my issue may be related. Please see below:
> -----Original Message----- > From: zhenyu.ren [mailto:[email protected]] > Sent: Tuesday, 25 February 2014 4:32 PM > To: Mathieu Desnoyers > Cc: lttng-dev > Subject: Re: [lttng-dev] epoll_wait reboot kernel? > > >Which gcc version do you use ? > $gcc --version > gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-46) I'm on CentOS 6, so my results ought to be relevant, but the above looks like the default GCC version for EL5, not EL6. I'm using "gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4)". [...] > > > I am working on rhel6(2.6.32.220) and ust is working very > well.But when I > > > use lttng-modules (after "lttng start"),the kernel reboots > immediately > > > >without any message output to console. I'm not using the kernel modules here, just lttng-ust. [...] > > > I want to use poll instead as epoll in lttng-tools ,I changed > lttng-tools > > > configure file to not use epoll(undef HAVE_EPOLL), Note that 'configure' for lttng-tools has a --disable-epoll option. > > > but "lttng enable-event > > > -a -k >"failed :(Do I miss anything?) > > >#lttng enable-event -a -k > > >DEBUG1 [17837/18080]: Using run_as_clone (in run_as() at > runas.c:293) > > >lttng-sessiond: ht-cleanup.c:92: thread_ht_cleanup: Assertion > `pollfd == > > >ht_cleanup_pipe[0]' failed. I get similar issues when I run 'lttng enable-event -a -u' (i.e. UST instead of kernel tracing): DEBUG1 [1292/1297]: Spawning consumerd (in spawn_consumerd() at main.c:2085) lttng-sessiond: ht-cleanup.c:92: thread_ht_cleanup: Assertion `pollfd == ht_cleanup_pipe[0]' failed. DEBUG1 [1329/1329]: Using 64-bit UST consumer at: /usr/lib64/lttng/libexec/lttng-consumerd (in spawn_consumerd() at main.c:2161) Aborted (core dumped) but only when I configure lttng-tools with --disable-epoll. If I remove that option at build time, that particular lttng-sessiond assertion failure goes away and UST works fine. I built with --disable-epoll because I was told that, at least in some previous LTTng version, this was necessary for building on CentOS 5. I guess I can stop doing that now I'm using CentOS 6, but should this happen or is there a bug here? > > >PS:.lttng(ust/module/tool) version is 2.3.0 and urcu version is 0.8 I'm using lttng-ust, lttng-tools 2.3.2 and userspace-rcu 0.8.3. Thanks in advance, David ---------------------------------------------------------------------- The information contained in this transmission may be confidential. Any disclosure, copying, or further distribution of confidential information is not permitted unless such privilege is explicitly granted in writing by Quantum. Quantum reserves the right to have electronic communications, including email and attachments, sent across its networks filtered through anti virus and spam software programs and retain such messages in order to comply with applicable data security and retention requirements. Quantum is not responsible for the proper and complete transmission of the substance of this communication or for any delay in its receipt. _______________________________________________ lttng-dev mailing list [email protected] http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
