Gigabit/SMP performance problem
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Quoted 2 lines · Daniel Blueman
It's interesting you have IRQs balanced over the two logical processors. I can't get this on HT Xeons with stock RedHat 7.3 kernel.
I think he's using two physical processors, if by "logical processors" you are thinking HT... I also recall he has HT off, but the original post isn't handy.
Quoted 10 lines
Can you post the exact kernel version string, please?
TIA,
Dan"Avery Fay" <[email protected]> wrote in message news:<OF256CD297.9F92C038-ON85256CA3.006A4034-85256CA3.00705DEA@symantec.com>...
Quoted 3 lines
Dual Pentium 4 Xeon at 2.4 Ghz. I believe I am using irq load balancing as shown below (seems to be applied to Red Hat's kernel). Here's
/proc/interrupts:
Signature · 3 lines
bill davidsen <[email protected]> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.
Even with HT turned off on this dual-Xeon box, all IRQs are routed to CPU 0.
Kernel here is the latest RedHat 2.4.18 one.
Just curious what kernel Avery is running...
Dan
Quoted 17 lines · Daniel Blueman
Quoted 3 lines
It's interesting you have IRQs balanced over the two logical processors. I can't get this on HT Xeons with stock RedHat 7.3 kernel.
I think he's using two physical processors, if by "logical processors" you are thinking HT... I also recall he has HT off, but the original post isn't handy.
Quoted 7 lines
Can you post the exact kernel version string, please?
TIA,
Dan"Avery Fay" <[email protected]> wrote in message
news:<OF256CD297.9F92C038-ON85256CA3.006A4034-85256CA3.00705DEA@symantec.com>...
Quoted 10 lines
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Dual Pentium 4 Xeon at 2.4 Ghz. I believe I am using irq load
balancing as
Quoted 2 lines
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shown below (seems to be applied to Red Hat's kernel). Here's
/proc/interrupts:Signature · 3 lines
bill davidsen <[email protected]> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.
Signature · 4 lines
Daniel J Blueman +++ GMX - Mail, Messaging & more http://www.gmx.net +++ NEU: Mit GMX ins Internet. Rund um die Uhr für 1 ct/ Min. surfen!
I've been able to distribute IRQ servicing to other processors on P4 Xeon HT systems as described in the IRQ-affinity.txt file in the kernel-source Documentation directory. Well, it shows up as doing so in /proc/interrupts anyway! Looks like CPUs 0, 2, 4, etc.. are the real processors and 1,3,5, etc.. are the logical processors (which do not handle interrupts).
Quoted 54 lines · Daniel Blueman
Even with HT turned off on this dual-Xeon box, all IRQs are routed to CPU 0.
Kernel here is the latest RedHat 2.4.18 one.
Just curious what kernel Avery is running...
Dan
Quoted 22 lines · Daniel Blueman
Quoted 7 lines
It's interesting you have IRQs balanced over the two logical processors. I can't get this on HT Xeons with stock RedHat 7.3 kernel.
I think he's using two physical processors, if by "logical processors" you are thinking HT... I also recall he has HT off, but the original post isn't handy.
Quoted 8 lines
Can you post the exact kernel version string, please?
TIA,
Dan"Avery Fay" <[email protected]> wrote in message
news:<OF256CD297.9F92C038-ON85256CA3.006A4034-85256CA3.00705DEA@symantec.com>...
Quoted 16 lines
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Dual Pentium 4 Xeon at 2.4 Ghz. I believe I am using irq load
balancing as
Quoted 3 lines
Quoted 3 lines
shown below (seems to be applied to Red Hat's kernel). Here's
/proc/interrupts:Signature · 3 lines
bill davidsen <[email protected]> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.
Signature · 5 lines
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