Svavar Örn Eysteinsson wrote:
PowerEdge 2850 with PERC SCSI RAID controller. 16GB RAM Dual Intel(R) Xeon(TM) CPU 3.00GHz Using megaraid driver and xfs on 3x 300GB SCSI disks as /dev/sdb (total 572GB) (RAID-5)
Stock Centos 6.4 x64, everything updated. Kernel : 2.6.32-358.2.1.el6.x86_64 #1 SMP
My Load always shows :
top - 10:30:21 up 23:09, 1 users, load average: 0.99, 0.96, 0.79
yet there is no services what-so-ever doing anything.
Using PowerTOP I can see that xfsaild is causing second most wake-ups (after kernel core : hrtimer_start (tick_sched_timer) )
Have a look at the thread starting at:
http://lists.centos.org/pipermail/centos/2013-March/132931.html
There is a fix in the latest centosplus kernel
James Pearson