On Oct 4, 2010, at 11:06, Greg Stark wrote:
> I guess by "lock-free in the uncontended case" they mean the buffer
> cache manager is lock-free unless you're actually contending on the
> same buffer?
That refers to being able to acquire non-conflicting row/table locks without
needing an exclusiv
On Mon, Oct 04, 2010 at 01:13:36PM -0400, Robert Haas wrote:
> I believe the "one of only 16 global mutexes" comment is referring to
> NUM_LOCK_PARTITIONS (there's also NUM_BUFFER_PARTITIONS, but that
> wouldn't be relevant for row and table-level locks).
Yes -- my understanding is that they hit t
Here's a video on lock-free hashing for example:
http://video.google.com/videoplay?docid=2139967204534450862#
I guess by "lock-free in the uncontended case" they mean the buffer
cache manager is lock-free unless you're actually contending on the
same buffer?
--
Sent via pgsql-hackers mailing li
I wasn't involved in this work but I do know a bit about it. Sadly, the
work on Postgres performance was cut down to under a page, complete
with the amazing offhand mention of "rewriting PostgreSQL's lock
manager". Here are a few more details...
The benchmarks in this paper are all about stressing
On Mon, Oct 4, 2010 at 1:38 PM, Michael Glaesemann wrote:
>
> On Oct 4, 2010, at 13:13 , Robert Haas wrote:
>
>> On Mon, Oct 4, 2010 at 10:44 AM, Hakan Kocaman wrote:
>>> for whom it may concern:
>>> http://pdos.csail.mit.edu/mosbench/
>>> They tested with 8.3.9, i wonder what results 9.0 would g
On Oct 4, 2010, at 13:13 , Robert Haas wrote:
> On Mon, Oct 4, 2010 at 10:44 AM, Hakan Kocaman wrote:
>> for whom it may concern:
>> http://pdos.csail.mit.edu/mosbench/
>> They tested with 8.3.9, i wonder what results 9.0 would give.
>> Best regards and keep up the good work
>> Hakan
>
> Here's
On Mon, Oct 4, 2010 at 10:44 AM, Hakan Kocaman wrote:
> for whom it may concern:
> http://pdos.csail.mit.edu/mosbench/
> They tested with 8.3.9, i wonder what results 9.0 would give.
> Best regards and keep up the good work
> Hakan
Here's the most relevant bit to us:
--
The “Stock” line in Figur
Hi,
for whom it may concern:
http://pdos.csail.mit.edu/mosbench/
They tested with 8.3.9, i wonder what results 9.0 would give.
Best regards and keep up the good work
Hakan
