USB ExpressCard makes kworker process utilise 72-75% CPU infinitely

2017-01-12 Thread Christoph Anton Mitterer
Hi. This is basically from: https://bugzilla.kernel.org/show_bug.cgi?id=108341 respectively https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805903 the later in which Ben Hutchings recommended me to ping this list as well. I bought a USB3.0 ExpressCard from StarTech[0] which is apparently[1] ba

Re: USB ExpressCard makes kworker process utilise 72-75% CPU infinitely

2017-01-12 Thread Christoph Anton Mitterer
On Thu, 2017-01-12 at 18:24 +0100, Greg KH wrote: > What kworker process causes this?  Does it have a name? How do I find out? Or do you mean the /0:3 which is contained in the top output below? > > # perf top -p 2359 gives something like that: > > Samples: 64K of event 'cycles:ppp', Event count

Re: USB ExpressCard makes kworker process utilise 72-75% CPU infinitely

2017-01-12 Thread Christoph Anton Mitterer
On Thu, 2017-01-12 at 21:33 +0100, Greg KH wrote: > > Shall I forward it to linux-acpi? > Please do. FYI: done, https://www.spinics.net/lists/linux-acpi/msg71326.html Cheers, Chris. smime.p7s Description: S/MIME cryptographic signature

Re: USB ExpressCard makes kworker process utilise 72-75% CPU infinitely

2017-01-13 Thread Christoph Anton Mitterer
On Fri, 2017-01-13 at 11:43 +0200, Mathias Nyman wrote: > Does this kworker start to utilize the CPU immediately after a fresh > boot when the card is inserted, Yes. Once the card is inserted it immediately stops to consume the CPU at that high level, and it does not stop when the card is removed.

bogus optimal IO sizes for ASMedia ASM105x

2018-05-31 Thread Christoph Anton Mitterer
(forwarded from: https://bugzilla.kernel.org/show_bug.cgi?id=199759) Hi. I have some USB/SATA bridges from Inatek apparently based on different chipset generations: My older ones: May 11 22:41:08 heisenberg kernel: usb 4-2.2: new SuperSpeed USB device number 10 using xhci_hcd May 11 22:41:08 h