Re: New to PostgreSQL, performance considerations

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



"Joshua D. Drake" <jd@xxxxxxxxxxxxxxxxx> writes:
> On Wed, 2006-12-13 at 18:36 -0800, Josh Berkus wrote:
>> Mostly, though, pgbench just gives the I/O system a workout.  It's not a 
>> really good general workload.

> It also will not utilize all cpus on a many cpu machine. We recently
> found that the only way to *really* test with pgbench was to actually
> run 4+ copies of pgbench at the same time.

The pgbench app itself becomes the bottleneck at high transaction
rates.  Awhile back I rewrote it to improve its ability to issue
commands concurrently, but then desisted from submitting the
changes --- if we change the app like that, future numbers would
be incomparable to past ones, which sort of defeats the purpose of a
benchmark no?

			regards, tom lane


[Postgresql General]     [Postgresql PHP]     [PHP Users]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Yosemite]

  Powered by Linux