On 20.07.2011 19:21, Chris Mason wrote:
> Excerpts from Chris Mason's message of 2011-07-19 13:30:22 -0400:
>> Hi everyone,
>>
>> I've pushed out a new integration-test branch, and it includes a new
>> reader/writer locking scheme for the btree locks.
>>
>> We've seen a number of benchmarks dominated by contention on the root
>> node lock.  This changes our locks into a simple reader/writer lock.
>> They are based on mutexes so that we still take advantage of the mutex
>> adaptive spins for write locks (rwsemaphores were much slower).
>>
>> I'm also sending the individual commits, please do take a look.
> 
> Hi everyone,
> 
> I just rebased Josef's enospc fixes into integration-test, it should fix
> the warnings in extent-tree.c
> 

With the current integration-test branch I get very early enospc on
a 7G volume create with -m single -d single and

fs_mark-3.3/fs_mark -d /mnt/fsm -D 512 -t 16 -n 4096 -s 51200 -L5 -S0 -R1

It enospces at about 20%, but I can continue to fill it up to 94%.

-Arne
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