On Thu, Jul 12, 2012 at 08:52:15PM -0600, Liu Bo wrote:
On 07/12/2012 02:04 PM, Chris Mason wrote:
I like this patch, its a big improvement for just a little timing
change. Instead of doing the kmalloc of this struct, can you please
change it to put a pagevec on the stack.
The model
On Wed, Jul 11, 2012 at 08:13:51PM -0600, Liu Bo wrote:
While testing with my buffer read fio jobs[1], I find that btrfs does not
perform well enough.
Here is a scenario in fio jobs:
We have 4 threads, t1 t2 t3 t4, starting to buffer read a same file,
and all of them will race on
On 07/12/2012 02:04 PM, Chris Mason wrote:
On Wed, Jul 11, 2012 at 08:13:51PM -0600, Liu Bo wrote:
While testing with my buffer read fio jobs[1], I find that btrfs does not
perform well enough.
Here is a scenario in fio jobs:
We have 4 threads, t1 t2 t3 t4, starting to buffer read a same
While testing with my buffer read fio jobs[1], I find that btrfs does not
perform well enough.
Here is a scenario in fio jobs:
We have 4 threads, t1 t2 t3 t4, starting to buffer read a same file,
and all of them will race on add_to_page_cache_lru(), and if one thread
successfully puts its page
