Hi!
On Mar 17, 2009, at 6:01 PM, Josh Berkus wrote:
If you want a scheduler which supports a mixed load, then the
application developer would have to tune that scheduler by providing
it with information about which queries where more important than
others. If users have explicit transactions, this gets even more
complicated.
I would agree. I don't believe there is a one size fit all. Of the
three we have in the tree right now, two of them definitely show
different performance characteristics on different loads. The third
one is nice because it doesn't use threads at all, so it is a bit
friendlier for debugging certain types of problems.
That all being said... I am fine with having a scheduler which works
better for one particular OS, or even that just runs on a particular
OS. There has been some mentioned of the Solaris scheduler so far that
is specific to Solaries. If I get a little bit of time, I'll toss it
together for others to see. Its a good example of "works better here".
If we could do similar schedulers for other OS'es, I would be fine
with that.
Cheers,
-Brian
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