[CentOS] kswapd taking 100% cpu with no swap on system

[Lamar Owen]

On Monday, May 09, 2011 01:57:54 PM Ali Ahsan wrote:
> On 05/09/2011 10:51 PM, Lamar Owen wrote:
> > On Monday, May 09, 2011 01:11:17 PM Ali Ahsan wrote:
> >> sd 0:0:0:0: Attached scsi disk sda
> >>     Vendor: ATA       Model: WDC WD10EARS-003  Rev: 80.0
> >>     Type:   Direct-Access                      ANSI SCSI revision: 05
> > Are your two drives in a RAID?  cat /proc/mdstat
> >
> No i am doing LVM with 2X 1 TB HD

Can you give the output of pvdisplay, vgdisplay, and lvdisplay?

Also, did you align the pv's to 4K sectors when you partitioned?

What does iostat -x tell you?

The particular drives (hardware) you are using have known performance issues; there are a number of reports in Western Digital's forums confirming this, for more than just Linux.