[Mono-dev] large performance drop between boehm and sgen for a parallel app

Rodrigo Kumpera kumpera at gmail.com
Thu Dec 5 17:48:18 UTC 2013

Are you running boehm in parallel mode? Can you run perf on your
application and email us the translated results?

On Thu, Dec 5, 2013 at 11:11 AM, Jonathan Shore <jonathan.shore at gmail.com>wrote:

> Hi,
> I have a complex parallel application which, when run on 10 threads gets
> very close to 1000% cpu with mono-boehm (linux) consistently (running for
> hours).   With mono-sgen only achieves  200 - 250% cpu.   This is on a 12 /
> 24 core machine.   I need to run sgen eventually because run into the 32
> bit limit with boehm from time to time.
> Note that this is with a fairly recent version of mono compiled from git
> sources with llvm enabled.
> It is not an application I can easily box up for analysis on bugzilla due
> to size of data context, though happy to provide an enviroment to the mono
> team if useful.  Wondering whether there is some GC debugging can turn on
> that is useful to the mono team?
> Thanks
> Jonathan
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