On Mon, Sep 08, 2008 at 10:02:30AM -0400, Chris Mason wrote:
On Mon, 2008-09-08 at 15:54 +0200, Andi Kleen wrote:
The idea is to try to spin for a bit to avoid scheduling away, which is
especially important for the high levels. Most holders of the mutex
let it go very quickly.
Ok
On Sat, 2008-09-06 at 23:43 -0600, Eric Anopolsky wrote:
Hi,
A couple of questions.
1. Does btrfs currently have anything like raid 5 or 6?
Not yet, it might one day.
2. One guy on my LUG's mailing list is really excited about the
potential for setting redundancy on a per-file basis.
On Mon, 2008-09-08 at 12:13 -0400, jim owens wrote:
Chris Mason wrote:
My guess is that the improvement happens mostly from the first couple of
tries,
not from repeated spinning. And since it is a mutex, you could even do:
I started with lower spin counts, I really didn't want to spin
On Mon, 08 Sep 2008 12:20:32 -0400
Chris Mason [EMAIL PROTECTED] wrote:
On Mon, 2008-09-08 at 12:13 -0400, jim owens wrote:
Chris Mason wrote:
My guess is that the improvement happens mostly from the first couple of
tries,
not from repeated spinning. And since it is a mutex, you
On Mon, Sep 08, 2008 at 09:49:42AM -0700, Stephen Hemminger wrote:
Not to mention the problem that developers seem to have faster machines than
average user, but slower than the enterprise and future generation CPU's.
So any tuning value seems to get out of date fast.
So where do my fellow
Hello,
This patch updates the space balancing code to utilize the new backref
format. By using the new format, we can walk up the reference chain and
find all references to a given extent quickly.
This patch improves the space balancing for data extents. To relocate
a data block group, there
