Re: [gentoo-user] USB mass storage device slow in Gentoo, fast in Windows...?
On Sun, Dec 27, 2009 at 1:57 PM, Paul Hartman wrote: > On Sun, Dec 27, 2009 at 1:46 PM, Paul Hartman > wrote: >> On Sun, Dec 27, 2009 at 12:10 PM, Paul Hartman >> wrote: >>> On Sun, Dec 27, 2009 at 12:01 AM, Michael Holmes >>> wrote: 2009/12/27 Paul Hartman : > On Sat, Dec 26, 2009 at 7:00 PM, Hung Dang wrote: >> On 12/26/09 15:54, Paul Hartman wrote: >>> Hi, >>> >>> I got a Nokia N900 linux internet tablet/phone a few days ago, and >>> when I connect it in USB Mass Storage mode to a Windows Vista computer >>> I can write at 17MB/sec, but when I connect it to my Gentoo box my >>> writes are really slow, between 500-900kb/sec depending on if I mount >>> in "sync" mode or not. As far as I know it should be just a totally >>> standard/generic mass storage device. (there were no drivers or >>> software install needed in windows, it just worked) >>> >>> Other USB devices plugged into the same port go full speed, and AFAIK >>> everything appears as if it should be high speed USB 2.0. Has anyone >>> seen something like this before? I'm not sure what the deal is. It >>> takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1 >>> minute to do the same in Windows. >>> >>> I'm not sure about debugging USB or what the options are. Everything >>> I've used previously has worked without any hassle. >> Have you received a lot of debugging messages at the output of dmesg >> when copying files? >> >> Hung > > No errors, no strange messages at all, it seems normal (only slow). I > have other USB devices like SD card reader, external HDD, and they > perform at full speed when plugged into the same port, so it's weird > to me. > > Thanks > Paul > > This isn't that helpful, but in Windows I get good thoroughputs in mass storage mode, but compartively weak ones in sync mode. But this shouldn't be the problem because as far as I know, there are no ync-mode drivers for good old Linux (which is ironic if you consider it). >>> >>> When I said "sync" mode I mean mounting the device in mass storage >>> mode with with "-o sync" (as opposed to the default cached/async >>> mode), which I believe is the default in Windows Vista & Win7 (because >>> most windows users cannot be bothered to unmount before pulling the >>> plug). >>> >>> Thanks >> >> Well, after a bit more plugging/unplugging of all my USB devices into >> various ports in different orders, it seems to be going fast now. I >> hate USB :) >> >> Thanks for the help > > Maybe I spoke too soon. It seems what's happening is when I write a > large amount of data, there are several "pdflush" threads at near 100% > i/o wait. I'm thinking it's writing multiple streams over USB which is > causing the massive slow-down. > > I'm using 2.6.31, and I see in 2.6.32 there is something called > "Per-backing-device based writeback" which may help me here... I'll > try the new kernel and report back :) There is a slight improvement but it's still very slow (less than 2MB/sec). It seems the problem happens if I try to copy more than 1 file to the device. If I copy/sync/copy/sync/copy/sync etc it goes faster, but that's extremely annoying!
Re: [gentoo-user] USB mass storage device slow in Gentoo, fast in Windows...?
On Sun, Dec 27, 2009 at 1:46 PM, Paul Hartman wrote: > On Sun, Dec 27, 2009 at 12:10 PM, Paul Hartman > wrote: >> On Sun, Dec 27, 2009 at 12:01 AM, Michael Holmes >> wrote: >>> 2009/12/27 Paul Hartman : On Sat, Dec 26, 2009 at 7:00 PM, Hung Dang wrote: > On 12/26/09 15:54, Paul Hartman wrote: >> Hi, >> >> I got a Nokia N900 linux internet tablet/phone a few days ago, and >> when I connect it in USB Mass Storage mode to a Windows Vista computer >> I can write at 17MB/sec, but when I connect it to my Gentoo box my >> writes are really slow, between 500-900kb/sec depending on if I mount >> in "sync" mode or not. As far as I know it should be just a totally >> standard/generic mass storage device. (there were no drivers or >> software install needed in windows, it just worked) >> >> Other USB devices plugged into the same port go full speed, and AFAIK >> everything appears as if it should be high speed USB 2.0. Has anyone >> seen something like this before? I'm not sure what the deal is. It >> takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1 >> minute to do the same in Windows. >> >> I'm not sure about debugging USB or what the options are. Everything >> I've used previously has worked without any hassle. > Have you received a lot of debugging messages at the output of dmesg > when copying files? > > Hung No errors, no strange messages at all, it seems normal (only slow). I have other USB devices like SD card reader, external HDD, and they perform at full speed when plugged into the same port, so it's weird to me. Thanks Paul >>> >>> This isn't that helpful, but in Windows I get good thoroughputs in >>> mass storage mode, but compartively weak ones in sync mode. But this >>> shouldn't be the problem because as far as I know, there are no >>> ync-mode drivers for good old Linux (which is ironic if you consider >>> it). >> >> When I said "sync" mode I mean mounting the device in mass storage >> mode with with "-o sync" (as opposed to the default cached/async >> mode), which I believe is the default in Windows Vista & Win7 (because >> most windows users cannot be bothered to unmount before pulling the >> plug). >> >> Thanks > > Well, after a bit more plugging/unplugging of all my USB devices into > various ports in different orders, it seems to be going fast now. I > hate USB :) > > Thanks for the help Maybe I spoke too soon. It seems what's happening is when I write a large amount of data, there are several "pdflush" threads at near 100% i/o wait. I'm thinking it's writing multiple streams over USB which is causing the massive slow-down. I'm using 2.6.31, and I see in 2.6.32 there is something called "Per-backing-device based writeback" which may help me here... I'll try the new kernel and report back :)
Re: [gentoo-user] USB mass storage device slow in Gentoo, fast in Windows...?
On Sun, Dec 27, 2009 at 12:10 PM, Paul Hartman wrote: > On Sun, Dec 27, 2009 at 12:01 AM, Michael Holmes > wrote: >> 2009/12/27 Paul Hartman : >>> On Sat, Dec 26, 2009 at 7:00 PM, Hung Dang wrote: On 12/26/09 15:54, Paul Hartman wrote: > Hi, > > I got a Nokia N900 linux internet tablet/phone a few days ago, and > when I connect it in USB Mass Storage mode to a Windows Vista computer > I can write at 17MB/sec, but when I connect it to my Gentoo box my > writes are really slow, between 500-900kb/sec depending on if I mount > in "sync" mode or not. As far as I know it should be just a totally > standard/generic mass storage device. (there were no drivers or > software install needed in windows, it just worked) > > Other USB devices plugged into the same port go full speed, and AFAIK > everything appears as if it should be high speed USB 2.0. Has anyone > seen something like this before? I'm not sure what the deal is. It > takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1 > minute to do the same in Windows. > > I'm not sure about debugging USB or what the options are. Everything > I've used previously has worked without any hassle. Have you received a lot of debugging messages at the output of dmesg when copying files? Hung >>> >>> No errors, no strange messages at all, it seems normal (only slow). I >>> have other USB devices like SD card reader, external HDD, and they >>> perform at full speed when plugged into the same port, so it's weird >>> to me. >>> >>> Thanks >>> Paul >>> >>> >> >> This isn't that helpful, but in Windows I get good thoroughputs in >> mass storage mode, but compartively weak ones in sync mode. But this >> shouldn't be the problem because as far as I know, there are no >> ync-mode drivers for good old Linux (which is ironic if you consider >> it). > > When I said "sync" mode I mean mounting the device in mass storage > mode with with "-o sync" (as opposed to the default cached/async > mode), which I believe is the default in Windows Vista & Win7 (because > most windows users cannot be bothered to unmount before pulling the > plug). > > Thanks Well, after a bit more plugging/unplugging of all my USB devices into various ports in different orders, it seems to be going fast now. I hate USB :) Thanks for the help
Re: [gentoo-user] USB mass storage device slow in Gentoo, fast in Windows...?
On Sun, Dec 27, 2009 at 12:01 AM, Michael Holmes wrote: > 2009/12/27 Paul Hartman : >> On Sat, Dec 26, 2009 at 7:00 PM, Hung Dang wrote: >>> On 12/26/09 15:54, Paul Hartman wrote: Hi, I got a Nokia N900 linux internet tablet/phone a few days ago, and when I connect it in USB Mass Storage mode to a Windows Vista computer I can write at 17MB/sec, but when I connect it to my Gentoo box my writes are really slow, between 500-900kb/sec depending on if I mount in "sync" mode or not. As far as I know it should be just a totally standard/generic mass storage device. (there were no drivers or software install needed in windows, it just worked) Other USB devices plugged into the same port go full speed, and AFAIK everything appears as if it should be high speed USB 2.0. Has anyone seen something like this before? I'm not sure what the deal is. It takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1 minute to do the same in Windows. I'm not sure about debugging USB or what the options are. Everything I've used previously has worked without any hassle. >>> Have you received a lot of debugging messages at the output of dmesg >>> when copying files? >>> >>> Hung >> >> No errors, no strange messages at all, it seems normal (only slow). I >> have other USB devices like SD card reader, external HDD, and they >> perform at full speed when plugged into the same port, so it's weird >> to me. >> >> Thanks >> Paul >> >> > > This isn't that helpful, but in Windows I get good thoroughputs in > mass storage mode, but compartively weak ones in sync mode. But this > shouldn't be the problem because as far as I know, there are no > ync-mode drivers for good old Linux (which is ironic if you consider > it). When I said "sync" mode I mean mounting the device in mass storage mode with with "-o sync" (as opposed to the default cached/async mode), which I believe is the default in Windows Vista & Win7 (because most windows users cannot be bothered to unmount before pulling the plug). Thanks
Re: [gentoo-user] USB mass storage device slow in Gentoo, fast in Windows...?
2009/12/27 Paul Hartman : > On Sat, Dec 26, 2009 at 7:00 PM, Hung Dang wrote: >> On 12/26/09 15:54, Paul Hartman wrote: >>> Hi, >>> >>> I got a Nokia N900 linux internet tablet/phone a few days ago, and >>> when I connect it in USB Mass Storage mode to a Windows Vista computer >>> I can write at 17MB/sec, but when I connect it to my Gentoo box my >>> writes are really slow, between 500-900kb/sec depending on if I mount >>> in "sync" mode or not. As far as I know it should be just a totally >>> standard/generic mass storage device. (there were no drivers or >>> software install needed in windows, it just worked) >>> >>> Other USB devices plugged into the same port go full speed, and AFAIK >>> everything appears as if it should be high speed USB 2.0. Has anyone >>> seen something like this before? I'm not sure what the deal is. It >>> takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1 >>> minute to do the same in Windows. >>> >>> I'm not sure about debugging USB or what the options are. Everything >>> I've used previously has worked without any hassle. >> Have you received a lot of debugging messages at the output of dmesg >> when copying files? >> >> Hung > > No errors, no strange messages at all, it seems normal (only slow). I > have other USB devices like SD card reader, external HDD, and they > perform at full speed when plugged into the same port, so it's weird > to me. > > Thanks > Paul > > This isn't that helpful, but in Windows I get good thoroughputs in mass storage mode, but compartively weak ones in sync mode. But this shouldn't be the problem because as far as I know, there are no ync-mode drivers for good old Linux (which is ironic if you consider it).
Re: [gentoo-user] USB mass storage device slow in Gentoo, fast in Windows...?
On Sat, Dec 26, 2009 at 7:00 PM, Hung Dang wrote: > On 12/26/09 15:54, Paul Hartman wrote: >> Hi, >> >> I got a Nokia N900 linux internet tablet/phone a few days ago, and >> when I connect it in USB Mass Storage mode to a Windows Vista computer >> I can write at 17MB/sec, but when I connect it to my Gentoo box my >> writes are really slow, between 500-900kb/sec depending on if I mount >> in "sync" mode or not. As far as I know it should be just a totally >> standard/generic mass storage device. (there were no drivers or >> software install needed in windows, it just worked) >> >> Other USB devices plugged into the same port go full speed, and AFAIK >> everything appears as if it should be high speed USB 2.0. Has anyone >> seen something like this before? I'm not sure what the deal is. It >> takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1 >> minute to do the same in Windows. >> >> I'm not sure about debugging USB or what the options are. Everything >> I've used previously has worked without any hassle. > Have you received a lot of debugging messages at the output of dmesg > when copying files? > > Hung No errors, no strange messages at all, it seems normal (only slow). I have other USB devices like SD card reader, external HDD, and they perform at full speed when plugged into the same port, so it's weird to me. Thanks Paul
Re: [gentoo-user] USB mass storage device slow in Gentoo, fast in Windows...?
Have you received a lot of debugging messages at the output of dmesg when copying files? Hung On 12/26/09 15:54, Paul Hartman wrote: > Hi, > > I got a Nokia N900 linux internet tablet/phone a few days ago, and > when I connect it in USB Mass Storage mode to a Windows Vista computer > I can write at 17MB/sec, but when I connect it to my Gentoo box my > writes are really slow, between 500-900kb/sec depending on if I mount > in "sync" mode or not. As far as I know it should be just a totally > standard/generic mass storage device. (there were no drivers or > software install needed in windows, it just worked) > > Other USB devices plugged into the same port go full speed, and AFAIK > everything appears as if it should be high speed USB 2.0. Has anyone > seen something like this before? I'm not sure what the deal is. It > takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1 > minute to do the same in Windows. > > I'm not sure about debugging USB or what the options are. Everything > I've used previously has worked without any hassle. > > lsusb -vv output for this device: > > Bus 001 Device 031: ID 0421:01c7 Nokia Mobile Phones > Device Descriptor: > bLength18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize064 > idVendor 0x0421 Nokia Mobile Phones > idProduct 0x01c7 > bcdDevice3.16 > iManufacturer 1 Nokia > iProduct2 N900 (Storage Mode) > iSerial 3 (censored) > bNumConfigurations 2 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 32 > bNumInterfaces 1 > bConfigurationValue 1 > iConfiguration 4 Max power > bmAttributes 0x80 > (Bus Powered) > MaxPower 500mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber0 > bAlternateSetting 0 > bNumEndpoints 2 > bInterfaceClass 8 Mass Storage > bInterfaceSubClass 6 SCSI > bInterfaceProtocol 80 Bulk (Zip) > iInterface 6 Mass Storage > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x81 EP 1 IN > bmAttributes2 > Transfer TypeBulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0200 1x 512 bytes > bInterval 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x01 EP 1 OUT > bmAttributes2 > Transfer TypeBulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0200 1x 512 bytes > bInterval 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 32 > bNumInterfaces 1 > bConfigurationValue 2 > iConfiguration 5 Self-powered > bmAttributes 0xc0 > Self Powered > MaxPower 100mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber0 > bAlternateSetting 0 > bNumEndpoints 2 > bInterfaceClass 8 Mass Storage > bInterfaceSubClass 6 SCSI > bInterfaceProtocol 80 Bulk (Zip) > iInterface 6 Mass Storage > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x81 EP 1 IN > bmAttributes2 > Transfer TypeBulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0200 1x 512 bytes > bInterval 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x01 EP 1 OUT > bmAttributes2 > Transfer TypeBulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0200 1x 512 bytes > bInterval 1 > Device Qualifier (for other device speed): > bLength10 > bDescriptorType 6 > bcdUSB 2.00 > bDeviceClass0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize064 > bNumConfigurations 2 > Device Status: 0x000
[gentoo-user] USB mass storage device slow in Gentoo, fast in Windows...?
Hi, I got a Nokia N900 linux internet tablet/phone a few days ago, and when I connect it in USB Mass Storage mode to a Windows Vista computer I can write at 17MB/sec, but when I connect it to my Gentoo box my writes are really slow, between 500-900kb/sec depending on if I mount in "sync" mode or not. As far as I know it should be just a totally standard/generic mass storage device. (there were no drivers or software install needed in windows, it just worked) Other USB devices plugged into the same port go full speed, and AFAIK everything appears as if it should be high speed USB 2.0. Has anyone seen something like this before? I'm not sure what the deal is. It takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1 minute to do the same in Windows. I'm not sure about debugging USB or what the options are. Everything I've used previously has worked without any hassle. lsusb -vv output for this device: Bus 001 Device 031: ID 0421:01c7 Nokia Mobile Phones Device Descriptor: bLength18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize064 idVendor 0x0421 Nokia Mobile Phones idProduct 0x01c7 bcdDevice3.16 iManufacturer 1 Nokia iProduct2 N900 (Storage Mode) iSerial 3 (censored) bNumConfigurations 2 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 4 Max power bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk (Zip) iInterface 6 Mass Storage Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes2 Transfer TypeBulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes2 Transfer TypeBulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 2 iConfiguration 5 Self-powered bmAttributes 0xc0 Self Powered MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk (Zip) iInterface 6 Mass Storage Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes2 Transfer TypeBulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes2 Transfer TypeBulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 1 Device Qualifier (for other device speed): bLength10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize064 bNumConfigurations 2 Device Status: 0x (Bus Powered) dmesg output when it is plugged in: [2920730.031010] usb 1-4: new high speed USB device using ehci_hcd and address 31 [2920730.146451] usb 1-4: New USB device found, idVendor=0421, idProduct=01c7 [2920730.146455] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [2920730.146458] usb 1-4: Product: N900 (Storage Mode) [2920730.146460] usb 1-4: Ma
