On Mon, 29 Oct 2007, Alfred Perlstein wrote: AP> * Dmitry Morozovsky <[EMAIL PROTECTED]> [071029 12:44] wrote: AP> > AP> > [hmm, after thinking a bit I decided it would be more appropriate here, in AP> > [EMAIL PROTECTED] AP> > AP> > Dear colleagues, AP> > AP> > any hints to tune rrdtool with ~30k rrd files (approx 2k target devices)? AP> > AP> > machine is mostly IO-bound, showing 100% disk load with 8 or sometimes even 3 AP> > mB/s, 300-400 tps (it's 2 SATA300 disks in gmirror) AP> AP> More ram?
Already 2G, mostly inactive/free. AP> AP> Turn off atime? For sure, and even tried to move rrd data to smaller UFS2 - same result. AP> Hash the data files into multiple directories to avoid having 2k files AP> in one dir. Hmm, I thought 2k is not so much, especially where UFSDIRHASH is in place... AP> Not sure how rrd tool works internally, but it might make sense AP> to see if you can use some layering library to force it to cache AP> some open files per process or something. It seems it using a lot of mmap... Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: [EMAIL PROTECTED] ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- [EMAIL PROTECTED] *** ------------------------------------------------------------------------ _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"