On 02/08/2015 04:34 PM, Ed Greshko wrote:
On 02/09/15 07:16, jd1008 wrote:
On 02/08/2015 02:42 PM, Cameron Simpson wrote:
On 08Feb2015 11:40, jd1008 <jd1008@xxxxxxxxx> wrote:
Why do I have md running when I do not have any raid storage?
root 32 2 0 09:35 ? 00:00:00 [md]
It's just a thread, presumably idle. Probably gets started at boot rather than on demand, so if it wasn't there you wouldn't be able to make new md devices. Just conjecture.
Cheers,
Cameron Simpson <cs@xxxxxxxxxx>
Would you say the same about the kernel thread ksmd?
ps -ef shows it running, and using 0 time.
root 25 2 0 15:58 ? 00:00:00 [ksmd]
https://www.kernel.org/doc/Documentation/vm/ksm.txt
Thanx Ed!
What's more expensive:
keep duplicate pages, and use a lock to
sync them when any one of them is modified,
or use a single copy, and do copy-on-write, which still
requires that the the page be sync'ed with the written
page?
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