Date: Thu, 23 Sep 2004 22:43:42 -0400 From: Paul Mather <paul@gromit.dlib.vt.edu> To: freebsd-geom@freebsd.org Subject: gstripe stripe size units? Message-ID: <1095993821.5665.124.camel@zappa.Chelsea-Ct.Org>
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What are the units for the stripe size argument to gstripe's "-s"
option? E.g., does "gstripe label -s 4096 ..." mean use a stripe size
of 4096 bytes; 4096 512-byte blocks; or what? The man page isn't
specific.
What is a good suggested value for stripe size? Does anyone have any
empirical results to share? Does it make sense to split the file system
block size over the providers of the stripe when calculating the stripe
size to use? E.g., for a 16 KB block size over two providers, make the
stripe size 8 KB. Or, is geom_stripe I/O done in much larger transfers?
(Usually, small transfers are poor for performance, arguing in favour of
a larger, rather than smaller, stripe size.)
Cheers,
Paul.
--
e-mail: paul@gromit.dlib.vt.edu
"Without music to decorate it, time is just a bunch of boring production
deadlines or dates by which bills must be paid."
--- Frank Vincent Zappa
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