Date: Tue, 18 Aug 2015 14:31:02 +0200 From: Svatopluk Kraus <onwahe@gmail.com> To: Hans Petter Selasky <hps@selasky.org> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: DWC OTG TX path optimisation for 11-current Message-ID: <CAFHCsPXbBSpkDtggN%2BiBm=vpYwOTpi7nH=Z0G4RiyvoVXuw7_g@mail.gmail.com> In-Reply-To: <55D31D11.3050509@selasky.org> References: <55A7D8CE.4020809@selasky.org> <CAHNYxxMp9jGDbV-5=-cE6daR-O3eN5pdvO1s-=QfX=A9XYqYmA@mail.gmail.com> <55B23276.8090703@selasky.org> <CAHNYxxNc9uB62hHEv1PM9PcsGgUs=zsvNgatqLD0p%2BiiDA3Aiw@mail.gmail.com> <55B73113.2020308@selasky.org> <CAFHCsPVaPZpqXLS7OApa=Xz5VLnLjVpV5dYV8Pn2uHh1Lcz7Tg@mail.gmail.com> <55B8AB76.7030603@selasky.org> <CAFHCsPUMaYEwJsaGUFuw9yZi_5bmraSBsOYpRWvSeuebpXBJUA@mail.gmail.com> <55B8B297.1010008@selasky.org> <CAFHCsPVGLs8j6LAV%2Bg4rP_ueTOd8pUOupYFGvmgC3XGcJC720Q@mail.gmail.com> <20150729154516.GH78154@funkthat.com> <55B8F5EC.2050908@selasky.org> <46ad096c958.1a82a175@mail.schwarzes.net> <55B9C3E2.5040501@selasky.org> <46ae815c7c3.447237c8@mail.schwarzes.net> <46aece00b53.3c1cdc1f@mail.schwarzes.net> <55BB2A5F.9000502@selasky.org> <46baa16c4ce.6efd29ef@mail.schwarzes.net> <55CF31A1.5080205@selasky.org> <CAFHCsPUKwNLkeSPSHHUs=vwFFAnBd_9HRPxaS6tEC0cR3y_C6Q@mail.gmail.com> <55D31D11.3050509@selasky.org>
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On Tue, Aug 18, 2015 at 1:54 PM, Hans Petter Selasky <hps@selasky.org> wrote: > Hi, > > On 08/18/15 13:22, Svatopluk Kraus wrote: >> >> Do I understand it well that you are not able to trigger the problem? > > > Maybe I haven't been trying hard enough. I've been using a kernel built from > "projects/hps_head" which I just updated to include the latest DWC OTG > patches, instead of "head". There was today a timer subsystem fix, not sure > if it makes any difference: > > https://svnweb.freebsd.org/changeset/base/286880 > > I will try to buildworld from an external USB disk later today and see what > happens. > >> >> and still the system response time is terrible. > > > If you can do: > > usbconfig -d 0.1 set_config 255 > > And verify that the IRQ rate goes to zero for DWC OTG, then we maybe could > rule out USB. > Note that my root filesystem was on usb disk. root@rpi2:~ # usbconfig ugen0.1: <OTG Root HUB DWCOTG> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA) ugen0.2: <product 0x9514 vendor 0x0424> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (2mA) ugen0.3: <product 0xec00 vendor 0x0424> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (2mA) ugen0.4: <USB2.0 Hub VIA Labs, Inc.> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA) ugen0.5: <USB2.0 Hub VIA Labs, Inc.> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA) ugen0.6: <HD710 ADATA> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (0mA) root@rpi2:~ # root@rpi2:~ # usbconfig -d 0.1 set_config 255 uhub0: at usbus0, port 1, addr 1 (disconnected) ugen0.2: <vendor 0x0424> at usbus0 (disconnected) uhub1: at uhub0, port 1, addr 2 (disconnected) ugen0.3: <vendor 0x0424> at usbus0 (disconnected) smsc0: at uhub1, port 1, addr 3 (disconnected) ukphy0: detached miibus0: detached ugen0.4: <VIA Labs, Inc.> at usbus0 (disconnected) uhub2: at uhub1, port 3, addr 4 (disconnected) ugen0.5: <VIA Labs, Inc.> at usbus0 (disconnected) uhub3: at uhub2, port 1, addr 5 (disconnected) ugen0.6: <ADATA> at usbus0 (disconnected) umass0: at uhub2, port 4, addr 6 (disconnected) da0 at umass-sim0 bus 0 scbus0 target 0 lun 0 da0: <ADATA HD710 AX00> detached (da0:umass-sim0:0:0:0): Periph destroyed Device da0s1a went missing before all of the data could be written to it; expect data loss. root@rpi2:~ # vmstat -i interrupt total rate irq1: mbox0 27 0 irq2: vchiq0 7 0 irq17: bcm283x_dwco 569952361 31 irq26: bcm_dma0 962 0 irq65: uart0 7945865 38 irq70: sdhci_bcm0 496 0 irq73: generic_time 19199003 21 irq76: ipi 853597 9 Total 597952318 6229 root@rpi2:~ # vmstat -i -w1 interrupt total rate irq1: mbox0 27 0 irq2: vchiq0 7 0 irq17: bcm283x_dwco 569961155 32 irq26: bcm_dma0 962 0 irq65: uart0 7946417 38 irq70: sdhci_bcm0 496 0 irq73: generic_time 19199024 21 irq76: ipi 853615 9 Total 597961703 6229 irq1: mbox0 0 0 irq2: vchiq0 0 0 irq17: bcm283x_dwco 550 472 irq26: bcm_dma0 0 0 irq65: uart0 526 451 irq70: sdhci_bcm0 0 0 irq73: generic_time 12 10 irq76: ipi 4 3 Total 1092 937 irq1: mbox0 0 0 irq2: vchiq0 0 0 irq17: bcm283x_dwco 640 598 irq26: bcm_dma0 0 0 irq65: uart0 474 443 irq70: sdhci_bcm0 0 0 irq73: generic_time 10 9 irq76: ipi 2 2 Total 1126 1052 irq1: mbox0 0 0 irq2: vchiq0 0 0 irq17: bcm283x_dwco 456 425 irq26: bcm_dma0 0 0 irq65: uart0 476 444 irq70: sdhci_bcm0 0 0 irq73: generic_time 13 12 irq76: ipi 3 3 Total 948 884 irq1: mbox0 0 0 irq2: vchiq0 0 0 irq17: bcm283x_dwco 219 205 irq26: bcm_dma0 0 0 irq65: uart0 476 446 irq70: sdhci_bcm0 0 0 irq73: generic_time 12 11 irq76: ipi 2 2 Total 709 664 ^C root@rpi2:~ # usbconfig ugen0.1: <OTG Root HUB DWCOTG> at usbus0, cfg=255 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA) root@rpi2:~ # usbconfig Svata
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