On 2011-02-25, at 4:37 PM, Mervini, Joseph A wrote: > That could be awful handy - especially when trying to tune a live file system > for performance. Is that going to be a 2.0 only enhancement or can it be > applied to existing 1.8 versions?
The patch was originally developed for 1.8, and ported to 2.1. That said, last time I tested it there were a few problems (crashing variety) so it isn't ready for prime time yet. Testing/debugging would be appreciated, patch for 1.8 and 2.1 are at: https://bugzilla.lustre.org/show_bug.cgi?id=22516 > On Feb 24, 2011, at 9:19 PM, Andreas Dilger wrote: >> Yes, this can be set at startup time to limit the number of started threads. >> There is a patch I wrote to also reduce the number of running treads but it >> wasn't landed yet. >> >> Cheers, Andreas >> >> On 2011-02-24, at 14:04, "Mervini, Joseph A" <[email protected]> wrote: >> >>> I'm inclined to agree. So apparently the only time that modifying the >>> runtime max values has a benefit is while the threads_started is low? >>> >>> Joe >>> ==== >>> >>> Joe Mervini >>> Sandia National Laboratories >>> High Performance Computing >>> 505.844.6770 >>> [email protected] >>> >>> >>> >>> On Feb 24, 2011, at 1:09 PM, Kevin Van Maren wrote: >>> >>>> However, I don't think you can decrease the number of running threads. >>>> See https://bugzilla.lustre.org/show_bug.cgi?id=22417 (and also >>>> https://bugzilla.lustre.org/show_bug.cgi?id=22516 ) >>>> >>>> Kevin >>>> >>>> >>>> Mervini, Joseph A wrote: >>>>> Cool! Thank you Johann. >>>>> ==== >>>>> >>>>> Joe Mervini >>>>> Sandia National Laboratories >>>>> High Performance Computing >>>>> 505.844.6770 >>>>> [email protected] >>>>> >>>>> >>>>> >>>>> On Feb 24, 2011, at 11:05 AM, Johann Lombardi wrote: >>>>> >>>>> >>>>>> On Thu, Feb 24, 2011 at 10:48:32AM -0700, Mervini, Joseph A wrote: >>>>>> >>>>>>> Quick question: Has runtime modification of the number of OST threads >>>>>>> been implemented in Lustre-1.8.3? >>>>>>> >>>>>> Yes, see bugzilla ticket 18688. It was landed in 1.8.1. > Cheers, Andreas -- Andreas Dilger Principal Engineer Whamcloud, Inc. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
