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From: Slawa Olhovchenkov <[email protected]> Date: 2015-10-28, Wednesday at 07:03 To: Ravi Pokala <[email protected]> Cc: "[email protected]" <[email protected]>, "[email protected]" <[email protected]>, "[email protected]" <[email protected]>, "[email protected]" <[email protected]>, "[email protected]" <[email protected]>, "[email protected]" <[email protected]> Subject: Re: Low-level trace-buffers in CAM >On Tue, Oct 27, 2015 at 02:22:33AM +0000, Pokala, Ravi wrote: > >> Hi folks, >> >> ---------------------------------------------------------------- >> This is an updated re-send of a message I originally sent about a year ago, >> during MeetBSD 2014. A few people expressed interest in person, but no one >> ever followed up on the lists. I'm bringing this up again, in the hopes that >> I can get some feedback before / during next week's Dev/Vendor Summit. I'm >> CCing some folks who expressed interest at that time, and some folks that I >> was told would be interested. >> ---------------------------------------------------------------- > >What about also export average queue length? May be request wait time in queue. Those are certainly good to have, but are at a higher layer than what I'm trying to capture. I'm really interested in what's going into and out of the hardware - the values of the CDB fields just before they get sent to the hardware, and the elapsed time and return-CDB fields when the SIM driver's interrupt handler fires at command completion. Admittedly, most people don't need that level of detail, but I work for a storage company, so ... ;-) -Ravi _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-geom To unsubscribe, send any mail to "[email protected]"
