io accounting stops incrementing

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Has anyone noticed problems with io accounting in /proc/diskstats?
I wrote a simple program to open a large block special device and
then read blocks at random byte offsets in a hard loop. For a minute
or so the counters for the device in /proc/diskstats show the expected
increments, but then inexplicably all the counters stop incrementing.

This has been observed with 2.6.12-rc3 and various recent git trees.
I'm guessing it's related to the recent io accounting changes in 
ll_rw_blk.c but haven't investigated any further at this stage.

Thanks
-- Mark
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux