> ------------ Původní zpráva ------------ > Od: Derrick Brashear <[email protected]> > Předmět: Re: [OpenAFS] Re: [OpenAFS] Re: [OpenAFS] cache manager locked under > heavy load? > Datum: 08.2.2010 03:41:38 > ---------------------------------------- > 2010/2/7 Alena Manova <[email protected]>: > >> ------------ Původní zpráva ------------ > >> Od: Andrew Deason <[email protected]> > >> Předmět: Re: [OpenAFS] Re: [OpenAFS] cache manager locked under heavy load? > >> Datum: 08.2.2010 02:09:49 > >> ---------------------------------------- > >> On Mon, 08 Feb 2010 00:01:03 +0100 (CET) > >> Alena Manova <[email protected]> wrote: > >> > >> > I am running one fileserver process. should I run more? how to get > >> > the optimal number? > >> [...] > >> > Instance fs, (type is fs) currently running normally. > >> > Auxiliary status is: file server running. > >> > Process last started at Sun Feb 7 04:00:05 2010 (2 proc starts) > >> > Command 1 is '/usr/afs/bin/fileserver' > >> > Command 2 is '/usr/afs/bin/volserver' > >> > Command 3 is '/usr/afs/bin/salvager' > >> > >> The number of threads you're running with is usually given by the -p > >> option to the fileserver. You are running with the default, which I > >> think is around 9. Try adding the argument "-p 128" (no quotes) to the > >> parameters passed to the fileserver, and see if it affects your problem > >> at all. > >> > > > > ok, thanks. > > > > I changed the fileserver to be started with the option -L which means > > "large" > and implies -p 128. > > > > however it didn't help solve my cache manager issue. > > nor will it. > > > > I also followed the vCache performance analysis described by Jason but > regardless the -stats parameter (even tried with value 1000000) I can't get > better hits/misses ratio than about 50% (which is much worse than recommended > 1%). > > -stats is not -stat. > > > how about the 'dynamic-vcaches' feature? it is enabled by default so is the > -stats parameter still relevant? > > > > I tried to use the -fakestat-all parameter and it seems it can improve the > ratio to 4%. but the issue persists (with same scale). > > > > currently I am running the cache manager with -dynroot -fakestat-all > > -volumes > 256 -daemons 6 -stats 300000 and the fileserver with 128 LWPs. but the issue > is > still there: > > as above. with with -stat rather than -stats > >
sorry, typo in my mail but not in my config - afsd would even not start with that misspelled parameter... > _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
