On Wed, Jul 30, 2003 at 01:23:21AM +0000, [EMAIL PROTECTED] wrote: > > The indication of this is that the g_bio zone does not return to > > zero USED as it should. > > It looks like z->uz_cachefree is slightly out of date (updated in > zone_timout() every 20th second) and often too low (not taking the > z->uz_full_bucket list into account). > > The enclosed patch recalculates the number of free elements on the > buckets instead of using z->uz_cachefree. > > - Tor Egge >
We took this into account when we did the comparison. We know that uz_cachefree is only a snapshot count; but Poul-Henning`s patch clearly illustrates a frequent fluctuation in the free zone value but where the actual number of allocated g_bio zone elements stays stable at 0, for example. The fact that the problem is solved when buckets are disabled also is indicative that there is a clear reentrancy problems somewhere. There may also be some bucket leakage (although I have not yet confirmed this) as well. -- Bosko Milekic * [EMAIL PROTECTED] * [EMAIL PROTECTED] TECHNOkRATIS Consulting Services * http://www.technokratis.com/ _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[EMAIL PROTECTED]"
