W dniu 2014-07-29 08:16, Jatin Davey pisze:
> Hi All
>
> I am using the following Linux version for my application:
>
> ****************************************
> [root@localhost ~]# uname -a
> Linux localhost.localdom 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT
> 2009 x86_64 x86_64 x86_64 GNU/Linux
> ****************************************
>
> ****************************************
> [root@localhost ~]# cat /etc/*release
> CentOS release 5.4 (Final)
> ****************************************
>
> When my application is running on the server i can see only one core
> being used heavily while the other cores are not being used much. My
> application has a major workload is collecting data from the eth0
> interface and then doing a lot of processing with the data in the
> database. So i can say that the Disk I/O and Network I/O are the major
> contributors towards the workload.
>
> from the /proc/interrupts file i can see the following:
>
> ****************************************************
> [root@localhost ~]# cat /proc/interrupts
> CPU0 CPU1 CPU2 CPU3
> 0: 16084980 0 0 0 IO-APIC-edge timer
> 1: 141 0 0 0 IO-APIC-edge i8042
> 6: 5 0 0 0 IO-APIC-edge floppy
> 7: 0 0 0 0 IO-APIC-edge parport0
> 8: 0 0 0 0 IO-APIC-edge rtc
> 9: 0 0 0 0 IO-APIC-level acpi
> 12: 251 0 0 0 IO-APIC-edge i8042
> 51: 2410224 0 0 0 IO-APIC-level ioc0
> 59: 11358257 0 0 0 IO-APIC-level eth0
> NMI: 0 0 0 0
> LOC: 16086147 16090336 16090320 16089691
> ERR: 0
> MIS: 0
> ****************************************************
>
> From the above output i can see that all the interrupts are hitting the
> cpu0 and thats why it is used more than any other core in the system.
>
> Can someone please help me in distributing the interrupts across all the
> cores so that all are used which will eventually result in a better
> performance of my system.
>
> Appreciate your response in this regard.
Hi.
Just use service irq balance: irqbalance from base repo of centos 5
IP
> Thanks
> Jatin
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