Bart,
Thanks for sharing the script. Will drop the patch.
Regards,
Quinn Tran
On 2/5/16, 11:42 AM, "Bart Van Assche" <bart.vanassche@xxxxxxxxxxx> wrote:
>On 02/05/2016 10:49 AM, Quinn Tran wrote:
>> On 2/4/16, 10:20 AM, "Bart Van Assche" <bart.vanassche@xxxxxxxxxxx> wrote:
>>> On 02/04/2016 08:45 AM, Himanshu Madhani wrote:
>>>> From: Quinn Tran <quinn.tran@xxxxxxxxxx>
>>>>
>>>>> cat /sys/kernel/debug/qla2xxx/*/irq_cpuid
>>>> qla2xxx_81
>>>> IRQ Name Vector CPUID
>>>> qla2xxx (default) 150 9
>>>> qla2xxx (rsp_q) 151 9
>>>> qla2xxx (atio_q) 152 9
>>>
>>> Hello Quinn and Himanshu,
>>>
>>> Do you think it would be possible to generate this information via a
>>> user-space script from /proc/interrupts and /proc/irq/<n>/smp_affinity?
>>>
>>> Thanks,
>>>
>>> Bart.
>>
>> Bart,
>>
>> Currently, the data from the 2 mentioned “/proc” entry points were not able to give us the host_id/port & the vector information.
>>
>> The 2 alternatives are i) change the driver code to register host id along with the vector and add script to combine the infos, ii) 1 code change that gives us the summary.
>>
>> We choose path 2 for the ease of usage.
>
>Hello Quinn,
>
>Please have another look at /proc/interrupts and
>/proc/irq/<n>/smp_affinity. The information that is exported through
>this patch is already available there. This is why I think this patch
>should be dropped. All you need is something like the shell script below.
>
>Sample output (nn = NUMA node; num = IRQ vector):
>
>==== IRQs
>nn cpu num count name
>0 6 105 1753 PCI-MSI-edge qla2xxx (rsp_q)
>1 1 104 8781 PCI-MSI-edge qla2xxx (default)
>1 1 107 1629 PCI-MSI-edge qla2xxx (rsp_q)
>
>The shell script that produced the above output:
>
>ppi() {
> { echo "$(<"/sys/devices/system/cpu/cpu$1/topology/physical_package_id")" || echo '?'; } 2>/dev/null
>}
>
>echo "==== IRQs"
>printf "%-2s %-3s %-3s %12s %-50s\n" nn cpu num count name
>cat /proc/interrupts |
> while read line; do
> num="$(echo "$line" | sed -n 's/^[[:blank:]]*\([0-9]*\):\([0-9[:blank:]]*\)\(.*\)/\1/p')"
> [ -z "$num" ] && continue
> count=0
> for c in $(echo "$line" | sed -n 's/^[[:blank:]]*\([0-9]*\):\([0-9[:blank:]]*\)\(.*\)/\2/p'); do
> count=$((count+c))
> done
> name="$(echo "$line" | sed -n 's/^[[:blank:]]*\([0-9]*\):\([0-9[:blank:]]*\)\(.*\)/\3/p')"
> if [ -r "/proc/irq/$num/smp_affinity_list" ]; then
> al="$(<"/proc/irq/$num/smp_affinity_list")"
> cpu="${al/-*}"
> cpu="${cpu/,*}"
> ppi="$(ppi "$cpu")"
> else
> cpu="?"
> ppi="?"
> fi
> printf "%-2s %-3d %-3d %12d %-50s\n" "$ppi" "$cpu" "$num" "$count" "$name"
> done |
> sort -n -k1,3
>
>Thanks,
>
>Bart.
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