Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6

2019-08-26 Thread Alan Stern
On Mon, 26 Aug 2019, Andrea Vai wrote: > ok, so you can grab them at > > http://fisica.unipv.it/transfer/usbmon_logs.zip > > (they will be automatically removed from there in a couple of weeks). > > For each size there is a .txt file (which contains the terminal > output) and 10 bad.mon.out_...

Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6

2019-08-25 Thread Andrea Vai
[Sorry, I had previously sent the message to the list but has been rejected. Sorry for any duplicate] Il giorno ven, 23/08/2019 alle 16.42 -0400, Alan Stern ha scritto: > On Fri, 23 Aug 2019, Andrea Vai wrote: > > > Il giorno mar, 20/08/2019 alle 13.13 -0400, Alan Stern ha scritto: > > > On Mon,

Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6

2019-08-23 Thread Alan Stern
On Fri, 23 Aug 2019, Andrea Vai wrote: > Il giorno mar, 20/08/2019 alle 13.13 -0400, Alan Stern ha scritto: > > On Mon, 19 Aug 2019, Andrea Vai wrote: > > > > > Hi Alan, > > > I attach the two traces, collected as follows: > > > > > > - start the trace; > > > - wait 10 seconds; > > > - plug th

Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6

2019-08-23 Thread Andrea Vai
Il giorno mar, 20/08/2019 alle 13.13 -0400, Alan Stern ha scritto: > On Mon, 19 Aug 2019, Andrea Vai wrote: > > > Hi Alan, > > I attach the two traces, collected as follows: > > > > - start the trace; > > - wait 10 seconds; > > - plug the drive; > > - wait 5 seconds; > > - mount the drive; > >

Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6

2019-08-20 Thread Alan Stern
On Mon, 19 Aug 2019, Andrea Vai wrote: > Hi Alan, > I attach the two traces, collected as follows: > > - start the trace; > - wait 10 seconds; > - plug the drive; > - wait 5 seconds; > - mount the drive; > - wait 5 seconds; > - copy a 500 byte file; > - wait 5 seconds; > - unmount the drive; >

Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6

2019-08-13 Thread Alan Stern
On Fri, 9 Aug 2019, Andrea Vai wrote: > Il giorno lun, 08/07/2019 alle 11.38 -0400, Alan Stern ha scritto: > > > > [...] > > Andrea, another thing you could try is to collect a usbmon trace > > under > > > > one of the "slow" kernels. Follow the instructions in > > > > Documentation/usb/usbmo