I'm trying to solve a echo problem...
The system is Centos 2.6.9-34.0.2.ELsmp (SMP) CentOS release 4.3
(Final). And the Box is Dual Intel Xeon CPU 2.80GHz with 2 GB memory.
It appears that CPU1 in not taking any interrupts - What steps do I need
to do
bring up CPU1 and share IRQ requests for a Linux noob?
Bart
cat /proc/interrupts
CPU0 CPU1
0: 70759112 0 IO-APIC-edge timer
1: 137 0 IO-APIC-edge i8042
2: 0 0 XT-PIC cascade
8: 1 0 IO-APIC-edge rtc
12: 2564 0 IO-APIC-edge i8042
14: 173957 0 IO-APIC-edge ide0
15: 635817 0 IO-APIC-edge ide1
153: 0 0 IO-APIC-level uhci_hcd
161: 1437910 0 IO-APIC-level eth0
169: 0 0 IO-APIC-level uhci_hcd
177: 0 0 IO-APIC-level uhci_hcd
185: 70717012 0 IO-APIC-level wct4xxp
193: 70716921 0 IO-APIC-level wct4xxp
NMI: 0 0
LOC: 70763311 70763320
ERR: 0
MIS: 0
Distro Name
Bart Fisher wrote:> I'm trying to solve a echo problem... > > The system is Centos 2.6.9-34.0.2.ELsmp (SMP) CentOS release 4.3 > (Final). And the Box is Dual Intel Xeon CPU 2.80GHz with 2 GB memory. > > It appears that CPU1 in not taking any interrupts - What steps do I > need to do > bring up CPU1 and share IRQ requests for a Linux noob? > > Bart > > cat /proc/interrupts > CPU0 CPU1 > 0: 70759112 0 IO-APIC-edge timer > 1: 137 0 IO-APIC-edge i8042 > 2: 0 0 XT-PIC cascade > 8: 1 0 IO-APIC-edge rtc > 12: 2564 0 IO-APIC-edge i8042 > 14: 173957 0 IO-APIC-edge ide0 > 15: 635817 0 IO-APIC-edge ide1 > 153: 0 0 IO-APIC-level uhci_hcd > 161: 1437910 0 IO-APIC-level eth0 > 169: 0 0 IO-APIC-level uhci_hcd > 177: 0 0 IO-APIC-level uhci_hcd > 185: 70717012 0 IO-APIC-level wct4xxp > 193: 70716921 0 IO-APIC-level wct4xxp > NMI: 0 0 > LOC: 70763311 70763320 > ERR: 0 > MIS: 0 > > > > > Distro Name >Might be a dumb question but are you sure there are two procs? I got confused once because of hyperthreading and looking at top. Thanks, Steve
>> It appears that CPU1 in not taking any interrupts - What steps do I >> need to do bring up CPU1 and share IRQ requests for a Linux noob?Run the IRQ balance daemon (/usr/sbin/irqbalance). It's part of the kernel-utils RPM. -- Atte. ?lvaro Palma