[rabbitmq-discuss] Performance tests and a warning on HIPE

[Jason McIntosh]

I'd love to be able to provide you more details but I've not gotten a crash
dump yet on any of the systems I've seen this (that's 3 in total, one VM,
two different physical boxes).  Any suggestions on how to get some more
data out of erlang/rabbit for this?

Thanks!
Jason


On Fri, Mar 8, 2013 at 9:58 AM, Tim Watson <tim at rabbitmq.com> wrote:

> Can anyone assist with either reproducing this, or providing either an
> erlang crash_dump or (if the emulator dies 'badly' enough) a core dump? I
> would be very good to pass this on to the hipe team so they can figure out
> what's wrong and fix it for future releases. Using hipe can potentially
> improve performance a lot, so not being able to trust it when using rabbit
> under load is a real shame, but this won't get fixed unless we provide the
> hipe team with some tangible evidence they can use to investigate.
>
> Cheers,
> Tim
>
> On 8 Mar 2013, at 15:53, Gavin M. Roy wrote:
>
> >
> > On Friday, March 8, 2013 at 8:40 AM, Simon MacMullen wrote:
> >
> >>> Now for the warnings: 1) TURN OFF HIPE. This was testing with
> >>> Erlang R15B03 - the latest release and RabbitMQ 3.0.2. With HIPE and
> >>> the load we were putting on the system, Rabbit crashes bad, no
> >>> errors, no warning, it's just suddenly dead. It seems to happen a
> >>> few minutes into the load. I've not enabled any kind of debugging to
> >>> trace this down, but this was scary enough that we immediately turned
> >>> off HIPE everywhere.
> >>
> >> That certainly is scary, and unlike our experiences - we've generally
> >> seen HiPE crash immediately or work fine. I suspect the platform is an
> >> issue here. But yes, you should be cautious turning on HiPE in
> production...
> > This is my experience as well on both CentOS 5.3 and 6.3 with R15B0 (and
> previous versions) with all versions of RabbitMQ we run (Everything from
> 2.7.1 -> 3.0.2)
> >
> > Cheers,
> >
> > Gavin
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-- 
Jason McIntosh
http://mcintosh.poetshome.com/blog/
573-424-7612
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