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?
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, >>>>> Johann >>>>> >>>>> -- >>>>> Johann Lombardi >>>>> Whamcloud, Inc. >>>>> www.whamcloud.com >>>>> >>>>> >>>> >>>> >>>> _______________________________________________ >>>> Lustre-discuss mailing list >>>> [email protected] >>>> http://lists.lustre.org/mailman/listinfo/lustre-discuss >>>> >>> >>> >> >> >> _______________________________________________ >> Lustre-discuss mailing list >> [email protected] >> http://lists.lustre.org/mailman/listinfo/lustre-discuss > == Joe Mervini Sandia National Laboratories Dept 09326 PO Box 5800 MS-0823 Albuquerque NM 87185-0823 _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
