On Jan 18, 2013, at 1:12 PM, Dieter BSD <[email protected]> wrote: > It is inexcusable that FreeBSD defaults to leaving the write cache on > for SATA & PATA drives.
This was completely driven by the need to satisfy idiotic benchmarkers, tech writers, and system administrators. It was a huge deal for FreeBSD 4.4, IIRC. It had been silently enabled it, we turned it off, released 4.4, and then got murdered in the press for being "slow". If I had my way, the WC would be off, everyone would be using SAS, and anyone who enabled SATA WC or complained about I/O slowness would be forced into Siberian salt mines for the remainder of their lives. > At least the admin can easily fix this by > adding hw.ata.wc=0 to /boot/loader.conf. The bigger problem is that > FreeBSD does not support queuing on all controllers that support it. > Not something that admins can fix, and inexcusable for an OS that > claims to care about performance. You keep saying this, but I'm unclear on what you mean. Can you explain? Scott _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
