Date: Tue, 3 Jan 2017 10:11:50 +0300 From: "Marat N.Afanasyev" <amarat@li.ru> To: Florian Ermisch <florian.ermisch@alumni.tu-berlin.de> Cc: FreeBSD stable <freebsd-stable@freebsd.org> Subject: Re: usb 3.0 thumb drive speed limit Message-ID: <586B4EB6.3010705@li.ru> In-Reply-To: <2E28B7BD-84DF-45EB-AB30-994DE26A0025@alumni.tu-berlin.de> References: <586A0F05.6050504@li.ru> <20170102202711.G26979@sola.nimnet.asn.au> <586A2495.5030301@li.ru> <2E28B7BD-84DF-45EB-AB30-994DE26A0025@alumni.tu-berlin.de>
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[-- Attachment #1 --] Florian Ermisch wrote: > > > Am 2. Januar 2017 10:59:49 MEZ, schrieb "Marat N.Afanasyev" <amarat@li.ru>: >> Ian Smith wrote: >>> On Mon, 2 Jan 2017 11:27:49 +0300, Marat N.Afanasyev wrote: >>> > I wonder is there a speed limit on usb 3.0? I've bought >>> > >>> > ugen0.4: <SanDisk> at usbus0 >>> > umass2 on uhub7 >>> > umass2: <SanDisk Extreme, class 0/0, rev 2.10/0.10, addr 4> on >> usbus0 >>> > da2 at umass-sim2 bus 2 scbus9 target 0 lun 0 >>> > da2: <SanDisk Extreme 0001> Removable Direct Access SPC-4 SCSI >> device >>> > da2: Serial Number AA010808161609220143 >>> > da2: 40.000MB/s transfers >>> > da2: 59840MB (122552320 512 byte sectors) >>> > da2: quirks=0x2<NO_6_BYTE> >>> > >>> > that claims 'Up to 245 MBytes/sec read speed' >>> > >>> > and dd shows: >>> > >>> > % dd if=/dev/da2 of=/dev/null bs=1m count=1000 >>> > 1000+0 records in >>> > 1000+0 records out >>> > 1048576000 bytes transferred in 25.688997 secs (40818098 >> bytes/sec) >>> > >>> > why we have such a limit? >>> >>> Seems you've plugged it into a USB 2 port, not USB 3 >>> >>> At least you're getting full USB 2 performance (40MB/s) >>> >>> Check if you have one or more USB 3 ports with 'dmesg | grep xhci' >>> >>> cheers, Ian >>> >>> >> afair, single usb 2.0 device can be as fast as 240 Mbits/sec, not 320 >> Mbits/sec: >> >> % dd if=/dev/da2 of=/dev/null bs=1m count=1000 >> 1000+0 records in >> 1000+0 records out >> 1048576000 bytes transferred in 34.026227 secs (30816699 bytes/sec) >> >> it's the same drive in usb 2.0 port >> >> And I do have usb 3.0: >> >> % grep xhci /var/run/dmesg.boot >> xhci0: <XHCI (generic) USB 3.0 controller> mem 0xfeaf8000-0xfeafffff >> irq >> 17 at device 0.0 on pci5 >> xhci0: 64 bytes context size, 64-bit DMA >> usbus0 on xhci0 >> xhci0: <XHCI (generic) USB 3.0 controller> mem 0xfeaf8000-0xfeafffff >> irq >> 17 at device 0.0 on pci5 >> xhci0: 64 bytes context size, 64-bit DMA >> usbus0 on xhci0 >> >> and I tried this thumb drive is in usb 3.0 port first, of course. > > Are you running 10.x or 11.0? > > When was running 10.1 I only got > ~27 MB/s out of each of my two > external HDDs connected to the > same USB3 port (two disk enclosure, > speed according to `zpool iostat -v` > AFAIR). > They also attached as high-speed > devices. > Some time after upgrading to the > than current 11-CURRENT I've > noticed kernel messages mentioning > 400 MB/s instead of 40 MB/s and > quite an improvement in throughput. > > May be a quirk in the driver for your > paricular XHCI chip. > > Regards, Florian > _______________________________________________ > freebsd-stable@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > 11.0 I think that i have somehow buggy addon card :( -- SY, Marat [-- Attachment #2 --] 0 *H 010 `He 0 *H 00͠U]?Bg0 *H 0u1 0 UIL10U StartCom Ltd.1)0'U StartCom Certification Authority1#0!UStartCom Class 1 Client CA0 160828143630Z 191128143630Z0410U amarat@li.ru10 *H amarat@li.ru0"0 *H 0 2 "ypw (j& K`֛Q]JW r ucf \? 2:,quԌ,gO3')Kߛfg _}#μt hY`<of'~hGT 0e^('Lg}~ukIY`َkǂ I^<*cNDktmB0^W ]A | 0O,gp 00U 0 U %0++0 U 0 0 U l0QltYk0 U #0$l9aIF+('Hmh0o+c0a0$+0http://ocsp.startssl.com09+0-http://aia.startssl.com/certs/sca.client1.crt08U 10/0-+)'http://crl.startssl.com/sca-client1.crl0U 0 amarat@li.ru0#U 0http://www.startssl.com/0GU @0>0< +70-0++ https://www.startssl.com/policy0 *H .FUB@:(e@eۋHԩgx<,ޢs4XOި;sE 1Y"@jhCtuf]Z`@x*O,F@ Kk= 00nC9 y >Rx_!V3_ 9e ӯ)-,gRmP~FQx%#EjUEᶔK'LoMO꽕 <bw PT"ӎR00ʠk} Q Y0 *H 0}1 0 UIL10U StartCom Ltd.1+0)U "Secure Digital Certificate Signing1)0'U StartCom Certification Authority0 151216010005Z 301216010005Z0u1 0 UIL10U StartCom Ltd.1)0'U StartCom Certification Authority1#0!UStartCom Class 1 Client CA0"0 *H 0 }â}[[_ u$Wy5 |̔ vnqY)\aL$dYG|B"QǤĩVD#'F k9O_]*ςz_kU.u3r #:C<ogT )K Xah8v[\KqdlO)3+u7J5";[vfL/"2ϩJ# 4ד[U TB,a˖a 7H< =q d0`0U 0 U %0++0U 0 02U +0)0'%#!http://crl.startssl.com/sfsca.crl0f+Z0X0$+0http://ocsp.startssl.com00+0$http://aia.startssl.com/certs/ca.crt0 U $l9aIF+('Hmh0 U #0N @[i04hCA0?U 80604U 0,0*+ http://www.startssl.com/policy0 *H [#'#4pnR ۡЗN⛭`]K"#H*߷Թψ;UA8 Ҟeg{ozmYE60A )wXRK6c^-Al^ k[':G=;oLv{$B5;8b,ZP4{o[-j m)[땭[4 s.c|ҴvYLJ<|ӯgu0jD2 @hl+:j\ze_ևa@HyMHINxpK?% 㤺RC:=?^&7m´) A2;E~V B1$EvcKj؝(OoپU`"$a;ҡj0$&<$ۊ+/xjzb,7}W*1ܺ tDv#8K %^P>/i?)yRuQg^z`~sP91000u1 0 UIL10U StartCom Ltd.1)0'U StartCom Certification Authority1#0!UStartCom Class 1 Client CAU]?Bg0 `He 0 *H 1 *H 0 *H 1 170103071150Z0/ *H 1" gjuv&0 yx U 0l *H 1_0]0 `He*0 `He0 *H 0*H 0 *H @0+0 *H (0 +7100u1 0 UIL10U StartCom Ltd.1)0'U StartCom Certification Authority1#0!UStartCom Class 1 Client CAU]?Bg0 *H 10u1 0 UIL10U StartCom Ltd.1)0'U StartCom Certification Authority1#0!UStartCom Class 1 Client CAU]?Bg0 *H ۭ&!$땍ꁍOik\^ţ#|yc 0T+ڗӧ9-lPH %V1}?Ywb ֚*=~ uMYE3VfyiYM&- ge0 `< H)e `R1EK y'uv ȼE0ŮQ'GDX֖d@r v#PΠ~O`{7/7? "^]A"E
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