On Tuesday 27 June 2006 11:34, Greg 'groggy' Lehey wrote: > This is not the case for Linux, where fsync syncs the entire file > system. That could explain some of the performance difference, but > not all of it. I suppose it's worth noting that, in general, people > report much better performance with MySQL on Linux than on FreeBSD. >
I recent have tested SCHED_CORE, the scheduler has same dynamic priority algorithm as Linux 2.6, it can make 10% performance boost for super-smack on my dual PIII, I tested it on local host, but its user interaction is quite bad under heavy load, scheduling alogrithm makes sense, but 4BSD is still best scheduler for me. > > I mean than the data is only written to the drives memory and so can > > be lost if power goes down. > > I don't believe that fsync is required to flush the drive buffers. It > would be nice to have a function that did, though. > > > And how I can confirm this? > > Trial and error? > > Greg > -- > See complete headers for address and phone numbers. _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"
