On Wed Oct 19 11, Hans Petter Selasky wrote:
> The following reply was made to PR usb/161793; it has been noted by GNATS.
> 
> From: Hans Petter Selasky <hsela...@c2i.net>
> To: freebsd-usb@freebsd.org
> Cc: Chargen <char...@gmail.com>,
>  freebsd-gnats-sub...@freebsd.org
> Subject: Re: usb/161793: poor EHCI usb2 i/o performance
> Date: Wed, 19 Oct 2011 07:55:50 +0200
> 
>  Hello,
>  
>  When testing and formatting, it is important to set the block size to 65536 
>  bytes to get the maximum performance. The default blocksize of "dd" is 512 
>  bytes, and there is no read-ahead! Try again using:
>  
>  dd if=/dev/daX of=/dev/null bs=65536.

results here are:

otaku% dd if=/dev/da0 of=/dev/null bs=65536 
30495+1 records in
30495+1 records out
1998585344 bytes transferred in 159.388494 secs (12539082 bytes/sec)
otaku% dd if=/dev/da0 of=/dev/null bs=65536
238033+1 records in
238033+1 records out
15599771136 bytes transferred in 655.616437 secs (23794051 bytes/sec)

testing an old usb stick and a fairly recent one. that's with usb2 and running
HEAD. the results are incredible imo.

my usb controller is

<Intel 82801I (ICH9) USB 2.0 controller>

cheers.
alex

>  
>  Thank you,
>  
>  --HPS
>  
>  On Wednesday 19 October 2011 05:41:16 Chargen wrote:
>  > >Number:         161793
>  > >Category:       usb
>  > >Synopsis:       poor EHCI usb2 i/o performance
>  > >Confidential:   no
>  > >Severity:       non-critical
>  > >Priority:       low
>  > >Responsible:    freebsd-usb
>  > >State:          open
>  > >Quarter:
>  > >Keywords:
>  > >Date-Required:
>  > >Class:          sw-bug
>  > >Submitter-Id:   current-users
>  > >Arrival-Date:   Wed Oct 19 03:50:03 UTC 2011
>  > >Closed-Date:
>  > >Last-Modified:
>  > >Originator:     Chargen
>  > >Release:        10.0-CURRENT
>  > >Organization:
>  > 
>  > >Environment:
>  > FreeBSD schwarzesonne 10.0-CURRENT FreeBSD 10.0-CURRENT #0: Tue Oct 18
>  > 21:40:49 CEST 2011    
>  > chargen@schwarzesonne:/usr/src/sys/i386/compile/SCHWARZESONNE  i386
>  > 
>  > >Description:
>  > I did some OHCI/EHCI usb1/2 subsystem performance checks on CURRENT with 1
>  > older generation 1gb USB memory stick and a newer 2GB USB memory stick.
>  > EHCI, usb2 UFS or MSDOSFS formatted gives about the same performance in
>  > FreeBSD, ~3MB/s and about 8~10 MB/s under Windows operating systems using
>  > the same hardware.
>  > 
>  > schwarzesonne# usbconfig dump_info | grep "480"
>  > ugen2.1: <EHCI root HUB NEC> at usbus2, cfg=0 md=HOST spd=HIGH (480Mbps)
>  > pwr=SAVE schwarzesonne# dmesg | grep "usbus2"
>  > usbus2: EHCI version 1.0
>  > usbus2: <NEC uPD 720100 USB 2.0 controller> on ehci0
>  > usbus2: 480Mbps High Speed USB v2.0
>  > ugen2.1: <NEC> at usbus2
>  > uhub2: <NEC EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus2
>  > ugen2.2: <Generic> at usbus2
>  > umass0: <Generic Mass Storage, class 0/0, rev 2.00/1.41, addr 2> on usbus2
>  > schwarzesonne# mount
>  > /dev/da0p2 on / (ufs, local, noatime, journaled soft-updates)
>  > devfs on /dev (devfs, local)
>  > schwarzesonne# dmesg | grep "da1"
>  > da1 at umass-sim0 bus 0 scbus4 target 0 lun 0
>  > da1: <A60C0705 Flash Disk 8.07> Removable Direct Access SCSI-2 device
>  > da1: 40.000MB/s transfers
>  > da1: 999MB (2047998 512 byte sectors: 64H 32S/T 999C)
>  > schwarzesonne# time dd if=/dev/zero of=/dev/da1 count=2
>  > 2+0 records in
>  > 2+0 records out
>  > 1024 bytes transferred in 0.003543 secs (289029 bytes/sec)
>  > 0.000u 0.002s 0:00.02 0.0%      0+0k 0+2io 0pf+0w
>  > schwarzesonne# ls -alrt /dev/da1*
>  > crw-r-----  1 root  operator  0x55 Oct 19 03:01 /dev/da1
>  > crw-r-----  1 root  operator  0x62 Oct 19 03:01 /dev/da1s1
>  > crw-r-----  1 root  operator  0x72 Oct 19 03:02 /dev/da1s1a
>  > schwarzesonne# fdisk -vBI /dev/da1
>  > ******* Working on device /dev/da1 *******
>  > fdisk: invalid fdisk partition table found
>  > parameters extracted from in-core disklabel are:
>  > cylinders=999 heads=64 sectors/track=32 (2048 blks/cyl)
>  > 
>  > parameters to be used for BIOS calculations are:
>  > cylinders=999 heads=64 sectors/track=32 (2048 blks/cyl)
>  > 
>  > Information from DOS bootblock is:
>  > 1: sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
>  >     start 32, size 2045920 (998 Meg), flag 80 (active)
>  >         beg: cyl 0/ head 1/ sector 1;
>  >         end: cyl 998/ head 63/ sector 32
>  > 2: <UNUSED>
>  > 3: <UNUSED>
>  > 4: <UNUSED>
>  > fdisk: Class not found
>  > schwarzesonne# bsdlabel -w da1s1
>  > schwarzesonne# time newfs -O 1 /dev/da1s1a
>  > /dev/da1s1a: 999.0MB (2045904 sectors) block size 32768, fragment size 4096
>  >         using 4 cylinder groups of 249.75MB, 7992 blks, 16128 inodes.
>  > super-block backups (for fsck -b #) at:
>  >  64, 511552, 1023040, 1534528
>  > 0.005u 0.015s 0:06.25 0.1%      128+15616k 6+260io 0pf+0w
>  > schwarzesonne# mkdir /mnt/usb
>  > schwarzesonne# mount -v /dev/da1s1a /mnt/usb/
>  > /dev/da1s1a on /mnt (ufs, local, fsid 66279e4eff2fa382)
>  > 
>  > schwarzesonne# time dd if=/dev/zero bs=1m count=500 > /mnt/usb/500mb
>  > 500+0 records in
>  > 500+0 records out
>  > 524288000 bytes transferred in 106.844333 secs (4907027 bytes/sec)
>  > 0.007u 1.813s 1:46.85 1.6%      28+5603k 5+4006io 0pf+0w
>  > 
>  > : rebooted to flush caches and track read performance
>  > 
>  > schwarzesonne# reboot
>  > schwarzesonne# mount /dev/da1s1a /mnt/usb
>  > schwarzesonne# time cp /mnt/usb/500mb /root/.
>  > 0.000u 2.665s 0:44.18 6.0%      21+5364k 4007+4000io 0pf+0w
>  > 
>  > :: EHCI, 2gb stick, usb2 performance, same procedure, rebooted and used
>  > :: newfs
>  > 
>  > Oct 19 04:15:53 schwarzesonne kernel: da1 at umass-sim0 bus 0 scbus4 target
>  > 0 lun 0 Oct 19 04:15:53 schwarzesonne kernel: da1: <CBM Flash Disk 5.00>
>  > Removable Direct Access SCSI-2 device Oct 19 04:15:53 schwarzesonne
>  > kernel: da1: 40.000MB/s transfers
>  > Oct 19 04:15:53 schwarzesonne kernel: da1: 2024MB (4145664 512 byte
>  > sectors: 255H 63S/T 258C) ugen2.2: <Flash Disk CBM> at usbus2, cfg=0
>  > md=HOST spd=HIGH (480Mbps) pwr=ON
>  > 
>  > schwarzesonne# time newfs -O 1 /dev/da1s1a
>  > /dev/da1s1a: 2023.8MB (4144688 sectors) block size 32768, fragment size
>  > 4096 using 4 cylinder groups of 505.97MB, 16191 blks, 32512 inodes.
>  > super-block backups (for fsck -b #) at:
>  >  64, 1036288, 2072512, 3108736
>  > 0.027u 0.009s 0:08.75 0.2%      64+7808k 6+516io 0pf+0w
>  > schwarzesonne# time dd if=/dev/zero bs=1m count=500 > /mnt/usb/500mb
>  > 500+0 records in
>  > 500+0 records out
>  > 524288000 bytes transferred in 173.849854 secs (3015752 bytes/sec)
>  > 0.008u 1.812s 2:53.85 1.0%      23+4694k 4+4005io 0pf+0w
>  > 
>  > :: EHCI, 2gb stick, usb2 performance, msdosfs FAT formatted under WindowsXP
>  > 
>  > schwarzesonne# mount -t msdosfs -o -m=644,-M=755 /dev/da1s1 /mnt/usb
>  > schwarzesonne# time dd if=/dev/zero bs=1m count=500 > /mnt/usb/500mb
>  > 500+0 records in
>  > 500+0 records out
>  > 524288000 bytes transferred in 170.956245 secs (3066796 bytes/sec)
>  > 0.008u 1.787s 2:50.95 1.0%      24+4862k 0+8001io 0pf+0w
>  > 
>  > :: OHCI, 2gb stick, performance
>  > 
>  > schwarzesonne# time dd if=/dev/zero bs=1m count=500 > /mnt/usb/500mb
>  > 500+0 records in
>  > 500+0 records out
>  > 524288000 bytes transferred in 601.650968 secs (871416 bytes/sec)
>  > 0.000u 1.723s 10:01.65 0.2%     22+4325k 4+4005io 0pf+0w
>  > 
>  > >How-To-Repeat:
>  > >
>  > >Fix:
>  > >
>  > >
>  > >Release-Note:
>  > >Audit-Trail:
>  > 
>  > >Unformatted:
>  > _______________________________________________
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>  > http://lists.freebsd.org/mailman/listinfo/freebsd-usb
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