[lkml]   [2005]   [May]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Disk write cache (Was: Hyper-Threading Vulnerability)
Gene Heskett wrote:
> I don't think I have any drives here that do obey that, Jeff. I got
> curious about this, oh, maybe a year back when this discussion first
> took place on another list, and wrote a test gizmo that copied a
> large file, then slept for 1 second and issued a sync command. No
> drive led activity until the usual 5 second delay of the filesystem
> had expired. To me, that indicated that the sync command was being
> returned as completed without error and I had my shell prompt back
> long before the drives leds came on. Admittedly that may not be a
> 100% valid test, but I really did expect to see the leds come on as
> the sync command was executed.

> Again, probably not a valid test of the sync command, but thats the
> evidence I have. I do not believe it works here, with any of the 5
> drives currently spinning in these two boxes.

Correct, that's a pretty poor test.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-05-16 04:16    [W:0.144 / U:1.064 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site