That affects many other things, and ONTAP auto tunes it.
Careful with that dial.. _________________________________Jeff MohlerTech Yahoo, Storage Architect, Principal(831)454-6712TW: @PrincipalYahooYM: Supra89ta
On Wednesday, June 24, 2015 6:58 AM, John Clear jac@panix.com wrote:
As others have mentioned, you want to let deswizzling finish. You can tune the priority of the deswizzling process with 'wafl scan speed' to limit the impact of the scan.
John
On Wed, Jun 24, 2015 at 06:39:20AM +0000, Mike Michalakis wrote:
Hi I have a storage system that is under stress, and as luck has it I need to added more stress by loading it with a large cifs related volume, this is a transition from a 7-Mode ontap system
Every time we complete the transition, the system spikes disks 100%, cpu 100%, etc. On the perfstat we see deswizzling running. This is a normal operation every time a snapmirror break-off occurs, that is the deswizzle part of the equation.. When we take this volume offline, operations go back to normal.
My question, what is the result of disabling deswizzle is the short term, do I look functionality, e.g. vol move?
To turn off deswizzle: Nodeshell*> options wafl.deswizzle.enable off To turn on deswizzle: Nodeshell*> options wafl.deswizzle.enable on
Backround: FAS3210, C-Dot 8.2.3, SAS disks
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