On Tue, Feb 19, 2013 at 9:22 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Tue, 12 Feb 2013, Bjorn Helgaas wrote: > >> [+cc linux-pci, Rafael, Alan] >> >> [https://bugzilla.kernel.org/show_bug.cgi?id=53551] >> >> On Tue, Feb 12, 2013 at 1:13 PM, Artem S. Tashkinov <t.artem@xxxxxxxxx> wrote: >> > Feb 13, 2013 01:32:53 AM, Linus Torvalds wrote: >> > On Tue, Feb 12, 2013 at 10:29 AM, Artem S. Tashkinov wrote: >> >>> Feb 12, 2013 11:30:20 PM, Linus Torvalds wrote: >> >>>> >> >>>>A few things to try to pinpoint: >> >>>> >> >>>> (a) Is it *only* write performance that suffers, or is it other >> >>>>performance too? Networking (DMA? Perhaps only writing *to* the >> >>>>network?)? CPU? >> >>> >> >>> I 've tested hdpard -tT --direct and the output on boot and after suspend >> >>> is quite similar. >> >>> >> >>> I 've also checked my network read/write speed, and it 's the same >> >>> ~ 100MBit/sec (I have no 1Gbit computers on my network >> >>> unfortunately). >> >> >> >>Ok. So it really sounds like just USB and HD writes. Which is quite >> >>odd, since they have basically nothing in common I can think of >> >>(except the obvious block layer issues). > > There's a slight chance that we might get some ideas by comparing > usbmon traces showing disk activity before and after the > problem-causing suspend. Where are we at with this, Artem? I assume it's still a problem. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
