Messages in this thread | | | Subject | Re: AW: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6 | From | Andrea Vai <> | Date | Fri, 29 Nov 2019 15:41:01 +0100 |
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Il giorno ven, 29/11/2019 alle 10.35 +0800, Ming Lei ha scritto: > On Fri, Nov 29, 2019 at 08:57:34AM +0800, Ming Lei wrote: > > > [...] > > > Andrea, can you collect the following log when running the test > > on current new(bad) kernel? > > > > /usr/share/bcc/tools/stackcount -K blk_mq_make_request > > Instead, please run the following trace, given insert may be > called from other paths, such as flush plug: > > /usr/share/bcc/tools/stackcount -K t:block:block_rq_insert
Attached, for new (patched) bad kernel.
Produced by: start the trace script (with the pendrive already plugged), wait some seconds, run the test (1 trial, 1 GB), wait for the test to finish, stop the trace.
The copy took ~1700 seconds.
Thanks, Andrea [unhandled content-type:application/zip] | |