Re: [PATCH v2 2/2] smartpqi: limit transfer length to 1MB

2017-07-12 Thread Martin K. Petersen
Don, > The smartpqi firmware will bypass the cache for any request larger > than 1MB, so we should cap the request size to avoid any > performance degradation in kernels later than v4.3 Ping on these... -- Martin K. Petersen Oracle Linux Engineering

Re: [PATCH v2 2/2] smartpqi: limit transfer length to 1MB

2017-07-12 Thread Martin K. Petersen
Don, > The smartpqi firmware will bypass the cache for any request larger > than 1MB, so we should cap the request size to avoid any > performance degradation in kernels later than v4.3 Ping on these... -- Martin K. Petersen Oracle Linux Engineering

Re: [PATCH v2 2/2] smartpqi: limit transfer length to 1MB

2017-06-23 Thread Johannes Thumshirn
On Fri, Jun 23, 2017 at 05:40:06PM +0800, Yadan Fan wrote: > The smartpqi firmware will bypass the cache for any request larger > than 1MB, so we should cap the request size to avoid any > performance degradation in kernels later than v4.3 > > This degradation is caused from

Re: [PATCH v2 2/2] smartpqi: limit transfer length to 1MB

2017-06-23 Thread Johannes Thumshirn
On Fri, Jun 23, 2017 at 05:40:06PM +0800, Yadan Fan wrote: > The smartpqi firmware will bypass the cache for any request larger > than 1MB, so we should cap the request size to avoid any > performance degradation in kernels later than v4.3 > > This degradation is caused from