Date: Tue, 3 Oct 2006 19:15:48 +0200 From: Ulrich Spoerlein <uspoerlein@gmail.com> To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-usb@freebsd.org Subject: Re: New UMASS driver available for testing Message-ID: <20061003171548.GA1325@roadrunner.q.local> In-Reply-To: <200610010944.04652.hselasky@c2i.net> References: <200609171214.49165.hselasky@c2i.net> <20060930152928.GB1441@roadrunner.q.local> <200610010944.04652.hselasky@c2i.net>
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Hans Petter Selasky wrote: > On Saturday 30 September 2006 17:29, Ulrich Spoerlein wrote: > > As you can see, performance increased by roughly 10%, but system time > > increased about 300% :( > > > > I hope this info was useful to you and am looking forward to seeing your > > reworked USB system hit the tree soon! > > The extra time used is due to an inline wait loop in the code, to make things > simple. 505856+0 records in 505856+0 records out 258998272 bytes transferred in 1771.034516 secs (146241 bytes/sec) dd if=/dev/da0 of=/dev/zero bs=$i 0.20s user 3.10s system 0% cpu 29:31.05 total 63232+0 records in 63232+0 records out 258998272 bytes transferred in 775.213552 secs (334099 bytes/sec) dd if=/dev/da0 of=/dev/zero bs=$i 0.01s user 0.41s system 0% cpu 12:55.23 total 7904+0 records in 7904+0 records out 258998272 bytes transferred in 650.920062 secs (397896 bytes/sec) dd if=/dev/da0 of=/dev/zero bs=$i 0.00s user 0.07s system 0% cpu 10:50.93 total 988+0 records in 988+0 records out 258998272 bytes transferred in 641.615133 secs (403666 bytes/sec) dd if=/dev/da0 of=/dev/zero bs=$i 0.00s user 0.03s system 0% cpu 10:41.63 total 123+1 records in 123+1 records out 258998272 bytes transferred in 641.612930 secs (403667 bytes/sec) dd if=/dev/da0 of=/dev/zero bs=$i 0.00s user 0.04s system 0% cpu 10:41.63 total Looks good to me, CPU usage is back to the old USB stack, but performance is up roughly 10%. Nice. So, when is that stuff going to finally hit -CURRENT? Any schedule? Ulrich Spoerlein -- A: Yes. >Q: Are you sure? > >A: Because it reverses the logical flow of conversation. > >>Q: Why is top posting frowned upon?
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