svn commit: r298011 - head/sys/cam/ata

[Ravi Pokala]

-----Original Message-----


From: <owner-src-committers at freebsd.org> on behalf of Warner Losh <imp at bsdimp.com>
Date: 2016-04-15, Friday at 16:15
To: Dmitry Morozovsky <marck at rinet.ru>
Cc: Ronald Klop <ronald-lists at klop.ws>, "svn-src-head at freebsd.org" <svn-src-head at freebsd.org>, "svn-src-all at freebsd.org" <svn-src-all at freebsd.org>, src-committers <src-committers at freebsd.org>, Warner Losh <imp at freebsd.org>
Subject: Re: svn commit: r298011 - head/sys/cam/ata

>... The 60s value has always been nuts since even the largest caches on the slowest drives can be flushed in under a second. ...

I'm not so sure about that. I've got an HDD with 256MB cache; even if it were all sequential, flushing that to the media would likely take more than a second. If it were mostly random, it would be well over a second.

That said, I agree that a full minute is overkill.

-Ravi (rpokala@)

>Warner