From: | "M(dot) Edward (Ed) Borasky" <znmeb(at)cesmail(dot)net> |
---|---|
To: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: postgresql 8.3 tps rate |
Date: | 2009-01-26 21:56:48 |
Message-ID: | 497E31A0.4080408@cesmail.net |
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Lists: | pgsql-performance |
Ron Mayer wrote:
> M. Edward (Ed) Borasky wrote:
>> At the CMG meeting I asked the disk drive engineers, "well, if the
>> drives are doing the scheduling, why does Linux go to all the trouble?"
>> Their answer was something like, "smart disk drives are a relatively
>> recent invention." But
>
> One more reason?
> I imagine the disk drives wouldn't be aware of IO scheduling classes
> and priorities ( http://linux.die.net/man/1/ionice ), while I imagine
> the linux I/O schedulers should.
>
Thanks!! I see I have much to learn. Jens Axboe is one of my heroes, BTW
-- he's half of the blktrace team. :)
--
M. Edward (Ed) Borasky
I've never met a happy clam. In fact, most of them were pretty steamed.
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