On 6-Jul-06, at 11:43 AM, Mike Benoit wrote:
On Thu, 2006-07-06 at 12:58 +0200, Jure Pečar wrote:
On Tue, 04 Jul 2006 19:37:34 -0700
Hans Reiser <[EMAIL PROTECTED]> wrote:
Mike Benoit wrote:
Hi Jeff,
I just tried the patch you suggested and it didn't make a
difference.
The load still spikes as soon as the free space falls below ~10%.
Jeff, please audit your code for what happens when all the bitmap
blocks reach 90% full. Could you discuss your design and code in
that regard for our benefit?
Mike, thanks so much for going to this much effort. It is rather
likely this is a problem affecting many users.
I run my busy mailservers with 0.5-2% free space (that's still a
couple of gigabytes) and have no problems. It's true that I
haven't touched the kernel & reiserfs there (2.4.21), so it does
not have any additions to the reiserfs v3 code since then. It just
works, so I don't have any desire to fix it :)
My desktop machine (v2.6.16, same as my MythTV box) is running with 9%
free space right now and it is not experiencing any slow down. I think
the problem is caused by the usage pattern of MythTV and how it
simultaneously streams one or more large files to the HD in relatively
small chunks over a long period of time.
...And then has a hard timing requirement when reusing the free
space, which a desktop/server doesn't have, exposing the issue.
--T
--
Mike Benoit <[EMAIL PROTECTED]>
