(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Tue, 29 Dec 2009 01:54:47 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=14929 > > Summary: usb writing speed issue > Product: IO/Storage > Version: 2.5 > Kernel Version: kernel 2.6.32.2 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: io_other@xxxxxxxxxxxxxxxxxxxx > ReportedBy: karolinek@xxxxxxx > Regression: No > > > Created an attachment (id=24336) > --> (http://bugzilla.kernel.org/attachment.cgi?id=24336) > kernel-config for kernel-2.6.32.2 > > while writing on usb-stick via usb2.0 (tested writing about 1GB data on > different usb-sticks) speed starts at about 14Mb/s and afterwards gets slower > and slower (down to 700kb/s and less). Did also happen in kernel version 2.6.31 > on another system running ubuntu with similar custom kernel, in kernel version > 2.6.30.6 writing speed behaves normal, starts at 14Mb/s and gets just about > 2Mb/s slower. > While searching at google about the problem, i came across some posts which > complained about the same behavior, but i didn't find a bug-report which > described the issue. > > Tested on Debian Squeeze with custom compiled kernels (.config is attached) > on eeepc 1000he > > lspci: > > 00:00.0 Host bridge: Intel Corporation Mobile 945GME Express Memory Controller > Hub (rev 03) > 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express > Integrated Graphics Controller (rev 03) > 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML > Express Integrated Graphics Controller (rev 03) > 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition > Audio Controller (rev 02) > 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 > (rev 02) > 00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 > (rev 02) > 00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 > (rev 02) > 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI > Controller #1 (rev 02) > 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI > Controller #2 (rev 02) > 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI > Controller #3 (rev 02) > 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI > Controller #4 (rev 02) > 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI > Controller (rev 02) > 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) > 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge > (rev 02) > 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller > (rev 02) > 00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA AHCI > Controller (rev 02) > 01:00.0 Network controller: RaLink RT2860 > 03:00.0 Ethernet controller: Attansic Technology Corp. Atheros > AR8121/AR8113/AR8114 PCI-E Ethernet Controller (rev b0) -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
