The Wayback Machine - https://web.archive.org/web/20130828113556/http://lwn.net:80/Articles/428854/
LWN.net Logo

Optimizing Linux with cheap flash drives

Optimizing Linux with cheap flash drives

Posted Feb 18, 2011 22:49 UTC (Fri) by jengelh (subscriber, #33263)
In reply to: Optimizing Linux with cheap flash drives by ewen
Parent article: Optimizing Linux with cheap flash drives

>and modern drives are used with constant linear velocity.)

I beg to differ. CAV (with zoned recording), please. You know the horrid seek times of CLV as used with CD-ROM.


(Log in to post comments)

Optimizing Linux with cheap flash drives

Posted Feb 18, 2011 23:44 UTC (Fri) by ewen (subscriber, #4772) [Link]

Yes, "zoned CAV" was what I had in mind when I wrote "constant linear velocity" for modern hard drives: the idea being that in the areas where there's more media passing under the head, you can have higher bit density than in the areas where there's less media passing under the head. But as you point out trying to optimise this on a per-track basis is horribly counter productive.

I probably should have said "semi-constant" linear velocity (the "zoned CAV" term didn't even come to mind until you pointed it out).

Ewen

Copyright © 2013, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds