openbsd 5.2 amd64: high interrupts/low throughout problem: Intel 10GBE cards, dual xeon x5570 (dell r710)

2013-06-12 Thread John Jasen
(We've seen this problem through a few OpenBSD releases. 5.2 is much improved over 4.8 in this regard. Using BIOS to disable multiple cores on each physical CPU also yielded greater throughput. Hyperthreading and virtualization BIOS extensions are off.) We have two Dell poweredge 710 systems in

Re: openbsd 5.2 amd64: high interrupts/low throughout problem: Intel 10GBE cards, dual xeon x5570 (dell r710)

2013-06-12 Thread Christiano F. Haesbaert
On 13 June 2013 00:15, John Jasen jja...@realityfailure.org wrote: (We've seen this problem through a few OpenBSD releases. 5.2 is much improved over 4.8 in this regard. Using BIOS to disable multiple cores on each physical CPU also yielded greater throughput. Hyperthreading and virtualization

Re: openbsd 5.2 amd64: high interrupts/low throughout problem: Intel 10GBE cards, dual xeon x5570 (dell r710)

2013-06-12 Thread John Jasen
On 06/12/2013 06:22 PM, Christiano F. Haesbaert wrote: On 13 June 2013 00:15, John Jasen jja...@realityfailure.org wrote: As I try to push the test system, interrupts climb above 12-15k/second (seen via systat), consuming more and more of the first CPU until after about 50% utilisation