Re: [dpdk-dev] [PATCH] raw/ioat: fix termination descriptor for batch

2021-07-20 Thread David Marchand
On Fri, Jul 16, 2021 at 4:28 PM Bruce Richardson wrote: > > On Fri, Jul 16, 2021 at 02:50:27PM +0100, Konstantin Ananyev wrote: > > When batch_size == 1, idxd has to add a dummy termination descriptor > > to satisfy HW requirements. > > Right now it uses NOP descriptor with FENCE flag. > > This is

Re: [dpdk-dev] [PATCH] raw/ioat: fix termination descriptor for batch

2021-07-16 Thread Bruce Richardson
On Fri, Jul 16, 2021 at 02:50:27PM +0100, Konstantin Ananyev wrote: > When batch_size == 1, idxd has to add a dummy termination descriptor > to satisfy HW requirements. > Right now it uses NOP descriptor with FENCE flag. > This is excessive and fencing can slowdown things quite significantly. > The

[dpdk-dev] [PATCH] raw/ioat: fix termination descriptor for batch

2021-07-16 Thread Konstantin Ananyev
When batch_size == 1, idxd has to add a dummy termination descriptor to satisfy HW requirements. Right now it uses NOP descriptor with FENCE flag. This is excessive and fencing can slowdown things quite significantly. The patch removes FENCE flag from termination dummy descriptor. That helps to imp