On Tue, 12 Nov 2002, Dan Ellard wrote: > I'm experimenting with the effects of SCSI tagged queueing on file > system performance. Is there any kind of global toggle somewhere in > the kernel to turn tagged queueing on and off, and/or knob to limit > the number of outstanding tags? Tagged queue management all seems > to be done at the device level, and I haven't found hooks for > controlling it at a higher level (but I thought I'd ask before > running off to write something). > > I'm running 4.6.2p4, in case things have changed. (If there's a > nicer interface in 4.7, I'll install it immediately!)
man camcontrol Specifically: camcontrol tags [device id] [generic args] [-N tags] [-q] [-v] camcontrol negotiate [device id] [generic args] [-T enable|disable] -- Chris Dillon - cdillon(at)wolves.k12.mo.us FreeBSD: The fastest and most stable server OS on the planet - Available for IA32 (Intel x86) and Alpha architectures - IA64, PowerPC, UltraSPARC, ARM, and S/390 under development - http://www.freebsd.org No trees were harmed in the composition of this message, although some electrons were mildly inconvenienced. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
