一台 RHEL AS 4.5 服务器出现"Disabling IRQ #193"错误了
转:http://apps.hi.baidu.com/share/detail/47507316
这两天服务器常弹出"Disabling IRQ #193"提示.
# cat /var/log/messages
...
Aug 6 20:35:35 euis1 kernel: irq 193: nobody cared! (screaming interrupt?)
Aug 6 20:35:35 euis1 kernel: irq 193: Please try booting with acpi=off and report a bug
Aug 6 20:35:35 euis1 kernel: [<c0107532>] __report_bad_irq+0x3a/0x77
Aug 6 20:35:35 euis1 kernel: [<c01077a9>] note_interrupt+0xea/0x115
Aug 6 20:35:35 euis1 kernel: [<c0107a55>] do_IRQ+0x143/0x1ae
Aug 6 20:35:35 euis1 kernel: [<c02d68bc>] common_interrupt+0x18/0x20
Aug 6 20:35:35 euis1 kernel: [<c01040e8>] mwait_idle+0x33/0x42
Aug 6 20:35:35 euis1 kernel: [<c01040a0>] cpu_idle+0x26/0x3b
Aug 6 20:35:35 euis1 kernel: handlers:
Aug 6 20:35:35 euis1 kernel: [<c025b8cc>] (usb_hcd_irq+0x0/0x4b)
Aug 6 20:35:35 euis1 kernel: Disabling IRQ #193
...
# cat /proc/interrupts | grep 193:
193: 4043 969 36033 935 33307 908 1000 22805 IO-APIC-level uhci_hcd
# uname -rm
2.6.9-55.ELsmp i686
# cat /etc/issue
Red Hat Enterprise Linux AS release 4 (Nahant Update 5)
Kernel \r on an \m
# sysinfo
System Information
Manufacturer: Lenovo
Product Name: Lenovo WQ R510 G6
Version: To Be Filled By O.E.M.
Serial Number: To Be Filled By O.E.M.
UUID: 00020003-0004-0005-0006-000700080009
Wake-up Type: Power Switch
很多人说在启动内核行里编辑, 加 acpi=off noapic 解决.
注:
ACPI就是Advanced Configuration and Power Interface的缩写,意思是“高级配置与电源接口”。这是英特尔、微软和东芝共同开发的一种电源管理标准。
APIC (高级可编程中断控制器)对计算机来讲有两个作用,一是管理IRQ的分配,可以把传统的16个IRQ扩展到24个(传统的管理方式叫PIC),以适应更多的设备。二是管理多CPU。由于Nf2主板并不支持多CPU,所以,APIC关闭直接的影响是减少了可用的IRQ。不过,如果板卡不是非常多的话,关闭 APIC对系统是没有什么影响的。
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