主页 / server / 问题 / 76146
Accepted
Stéphane
Asked: 2009-10-20 14:19:20 +0800 CST

我如何判断 irqbalance 是否在做任何事情？

  • 772

我查看了提到在 SMP 系统上安装 irqbalance ( http://www.irqbalance.org/ ) 的 linux 服务器调整文档。我现在在四核系统上查看它，虽然“ps axf”可以告诉我它正在运行，但我没有看到任何关于它是否/如何影响系统的统计数据或信息。

有谁知道在哪里看？

linux

3 个回答

  1. 根据 evildeed 的回答运行sudo cat /proc/irq/*/smp_affinity应该告诉你。如果您得到更多答案，那么它应该可以工作。

    由于输出是位掩码的整数变换，因此对于非程序员类型可能很难理解。

    例如：

    • 绑定到 cpu0 - 1
    • 绑定到 cpu1 - 2
    • 绑定到 cpu0 和/或 cpu1 - 3
    • 绑定到 cpu3,4,7 - 282
    • 5

  2. 您可以通过执行 cat /proc/interrupts 并查看您尝试隔离的进程是否在应该运行您的高优先级进程的处理器上创建中断来大致了解它是否在做任何事情。

    • 5
  3. Best Answer

    在源代码中，他们引用了 /proc 几次。也许你在那里找到你的答案。root@[/usr/local/src/irqbalance-0.55]egrep -ri "proc|sys" *

    activate.c:                     sprintf(buf, "/proc/irq/%i/smp_affinity", irq->number);
cpumask.h: * set of CPU's in a system, one bit position per CPU number.
cpumask.h: * The following particular system cpumasks and operations manage
cpumask.h: *  be plugged in at anytime during the life of that system boot.
cpumask.h:int highest_possible_processor_id(void);
cputree.c: * This file contains the code to construct and manipulate a hierarchy of processors,
cputree.c: * cache domains and processor cores.
cputree.c:#include <sys/types.h>
cputree.c:      dir = opendir("/sys/devices/system/cpu");
cputree.c:                      sprintf(new_path, "/sys/devices/system/cpu/%s", entry->d_name);
irqbalance.c:#include <sys/time.h>
irqbalance.c:   /* On single core UP systems irqbalance obviously has no work to do */
irqbalance.c:   /* On dual core/hyperthreading shared cache systems just do a one shot setup */
irqbalance.c:   parse_proc_interrupts();
irqbalance.c:   parse_proc_interrupts();
irqbalance.c:           parse_proc_interrupts();
irqbalance.c:           /* cope with cpu hotplug -- detected during /proc/interrupts parsing */
irqbalance.h:extern void parse_proc_interrupts(void);
irqlist.c:#include <sys/types.h>
irqlist.c: * This function classifies and reads various things from /proc about a specific irq
irqlist.c:      sprintf(buf, "/proc/irq/%i", number);
irqlist.c:                      sprintf(buf, "/proc/irq/%i/smp_affinity", number);
Makefile:LIBS=bitmap.o irqbalance.o cputree.o  procinterrupts.o irqlist.o placement.o activate.o network.o powermode.o numa.o classify.o
network.c:#include <sys/ioctl.h>
network.c:        sprintf(buffer,"/sys/bus/pci/devices/%s/irq", driver.bus_info);
network.c:      file = fopen("/proc/net/dev", "r");
numa.c:#include <sys/types.h>
numa.c: dir = opendir("/sys/bus/pci/devices");
numa.c:         sprintf(line,"/sys/bus/pci/devices/%s/irq", entry->d_name);
numa.c:         sprintf(line,"/sys/bus/pci/devices/%s/class", entry->d_name);
numa.c:         sprintf(line,"/sys/bus/pci/devices/%s/local_cpus", entry->d_name);
numa.c: * Ethernet gets the type via /proc/net/dev; in addition down'd interfaces
powermode.c:    file = fopen("/proc/stat", "r");
powermode.c:    dummy = strtoull(c, &c, 10); /* system */
procinterrupts.c:void parse_proc_interrupts(void)
procinterrupts.c:       file = fopen("/proc/interrupts", "r");
    • 3

相关问题