Date: Sun, 14 Nov 2010 18:48:46 +0200 From: =?utf-8?B?0JrQvtC90YzQutC+0LIg0JXQstCz0LXQvdC40Lk=?= <kes-kes@yandex.ru> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-questions@freebsd.org Subject: Re[4]: How to obtain what swi1:net is doing? Message-ID: <1565461584.20101114184846@yandex.ru> In-Reply-To: <AANLkTimpDJ-=hFHp0jniWOZHk9ayxff8TzNcOVgit58t@mail.gmail.com> References: <4910622844.20101111212049@yandex.ru> <ibhufr$1gk$1@dough.gmane.org> <5510442048.20101113034233@yandex.ru> <AANLkTimpDJ-=hFHp0jniWOZHk9ayxff8TzNcOVgit58t@mail.gmail.com>
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Здравствуйте, Ivan. Вы писали 13 ноября 2010 г., 20:35:12: IV> 2010/11/13 Коньков Евгений <kes-kes@yandex.ru>: >> IV> net.isr.direct_force=0 >> IV> net.isr.maxthreads=2 >> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs >> FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 SMT threads >> cpu0 (BSP): APIC ID: 0 >> cpu1 (AP): APIC ID: 1 >> cpu2 (AP): APIC ID: 4 >> cpu3 (AP): APIC ID: 5 >> ioapic0: Changing APIC ID to 6 >> ioapic0 <Version 2.0> irqs 0-23 on motherboard >> netisr_init: forcing maxthreads to 1 and bindthreads to 0 for device polling >> >> # cat /boot/loader.conf >> net.isr.maxthreads=2 >> >> maxthreads does not affected IV> I don't understand: how is it not affected? # cat /boot/loader.conf net.isr.maxthreads=2 after server was rebooted: # sysctl net.isr.maxthreads net.isr.maxthreads: 1 IV> On a system with maxthreads=2, here is how it shows: IV> betelgeuse:/home/ivoras# ps axuHc | grep isr IV> root 12 3.0 0.0 0 432 ?? WL 12:21PM 0:09.21 IV> intr/swi1: netisr 7 IV> root 12 0.0 0.0 0 432 ?? WL 12:21PM 0:00.00 IV> intr/swi1: netisr 0 IV> I.e. there are two threads here, bound to CPU cores 0 and 7. on my system with # cat /boot/loader.conf net.isr.maxthreads=2 and server reboot # ps axuHc | grep isr root 12 0,0 0,0 0 224 ?? WL 12:54 0:00,00 intr/swi1: netisr 0 >> #uname -r >> 9.0-CURRENT IV> Yes, multithreaded netisr was introduced in FreeBSD 8, it wasn't there in 7. -- С уважением, Коньков mailto:kes-kes@yandex.ru
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