Re: Slow writing of dirty data (bcache)

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

 



On Mon, Mar 10, 2014 at 11:34:45AM -0500, Larkin Lowrey wrote:
> 
> has 160+MB of dirty data. The dirty data is being written at a rate of 1
> page per second (8 sectors). At this rate it'll take 11 hrs to finish. I
> like to keep this array spun down when inactive but the drives can't
> spin down since they're being written to once a second.
> 
> This never happened when running 3.12.7. Is there anything I can do
> about this?

I believe this is intended behaviour - as the cache approaches the
writeback_percent level of fullness the rate of writeback will increase.
It is possible to override the writeback_rate by echoing a new value
into it but it will also change itself so you may find the rate falls
again...  Perhaps that can be avoided by echoing 0 into
writeback_percent too (see
http://evilpiepirate.org/git/linux-bcache.git/tree/Documentation/bcache.txt?h=bcache-dev#n265)...

-- 
Sitsofe | http://sucs.org/~sits/
--
To unsubscribe from this list: send the line "unsubscribe linux-bcache" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux ARM Kernel]     [Linux Filesystem Development]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux