Re: [PATCH v3 2/3] xen-blkfront: add a parameter for disabling of persistent grants

2020-09-22 Thread SeongJae Park
On Tue, 22 Sep 2020 16:27:03 +0200 "Jürgen Groß" wrote: > On 22.09.20 16:15, SeongJae Park wrote: > > From: SeongJae Park > > > > Persistent grants feature provides high scalability. On some small > > systems, however, it could incur data copy overheads[1] and thus it is > > required to be dis

Re: [PATCH v3 2/3] xen-blkfront: add a parameter for disabling of persistent grants

2020-09-22 Thread Jürgen Groß
On 22.09.20 16:15, SeongJae Park wrote: From: SeongJae Park Persistent grants feature provides high scalability. On some small systems, however, it could incur data copy overheads[1] and thus it is required to be disabled. It can be disabled from blkback side using a module parameter, 'featur