Messages in this thread | | | From | David Mosberger <> | Date | Tue, 18 Jan 2005 21:11:18 -0800 | Subject | Re: pipe performance regression on ia64 |
| |
>>>>> On Wed, 19 Jan 2005 10:34:30 +1100, Nick Piggin <nickpiggin@yahoo.com.au> said:
Nick> David I remember you reporting a pipe bandwidth regression, Nick> and I had a patch for it, but that hurt other workloads, so I Nick> don't think we ever really got anywhere. I've recently begun Nick> having another look at the multiprocessor balancer, so Nick> hopefully I can get a bit further with it this time.
While it may be worthwhile to improve the scheduler, it's clear that there isn't going to be a trivial "fix" for this issue, especially since it's not even clear that anything is really broken. Independent of the scheduler work, it would be very useful to have a pipe benchmark which at least made the dependencies on the scheduler obvious. So I think improving the scheduler and improving the LMbench pipe benchmark are entirely complementary.
--david
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |