Probably you have enabled in kernel "Enable kernel irq balancing" or CONFIG_IRQBALANCE
It is wrong. It has to be disabled. On Tue, 25 Dec 2007 11:52:48 +0300, Badalian Vyacheslav wrote > Marek Kierdelewicz: > > Hi, > > > > > >> Have 2 Ethernet adapters e1000. Have 8 CPU (4 real). > >> Computer work as Shaper. Use only TC rules to shape and IPTABLES to > >> drop. > >> question: > >> 1. I may balance load to other cpu? I understand that i can't balance > >> polling place, but find in TC and IPTABLES hash may do different cpu? > >> > > > > You need as many nics as cpus to effectivelu use all your processing > > power. You can pair-up nics and cpus by configuring appropriate irq > > smp affinity. Read in [1] from line 350 on. > > > Interesting. Sorry if my questions will be stupid. "smp affinity" its > was i need, but it not work for me, and never work if i remember =( > Maybe Guru of Network ask me where i have simple stupid mistake? > > In theory > #cat ffffffff > /proc/irq/ID/smp_affinity > set mask that all cpus must get interrupts RR > > but i see in cat /proc/interrupts that all interrupts get only CPU0 > On CPU1 0 interrupts > > i do > #cat 2 > /proc/irq/16/smp_affinity > #cat 2 > /proc/irq/17/smp_affinity > #echo /proc/irq/1[67]/smp_affinity > 00000002 > 00000002 > > Great. Interrupts go to CPU1 > > #cat 1 > /proc/irq/16/smp_affinity > #cat 1 > /proc/irq/17/smp_affinity > #echo /proc/irq/1[67]/smp_affinity > 00000001 > 00000001 > > Great. Interrupts go to CPU0 > > #cat 3 > /proc/irq/16/smp_affinity > #cat 3 > /proc/irq/17/smp_affinity > #echo /proc/irq/1[67]/smp_affinity > 00000003 > 00000003 > > Strange. Interrupts go to CPU0 only. > > Where i have mistake? Why i not have RR? Or i mistake in SMP > Affinity idea? Thanks for answers! > > Slavon > > > Another option is to use recent e1000 nics with multiqueue capability. > > Read in [2]. Google for more information. I'm not sure but you'll > > probably need non-kerel recent e1000 drivers from sourceforge. > > > > [1]http://www.mjmwired.net/kernel/Documentation/filesystems/proc.txt > > [2]http://www.mjmwired.net/kernel/Documentation/networking/multiqueue.txt > > > > cheers, > > Marek Kierdelewicz > > > > > > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Denys Fedoryshchenko Technical Manager Virtual ISP S.A.L. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
