> -----Original Message----- > From: Lars-Peter Clausen <lars@xxxxxxxxxx> > Sent: Thursday, April 15, 2021 12:41 PM > To: Radhey Shyam Pandey <radheys@xxxxxxxxxx>; vkoul@xxxxxxxxxx; > robh+dt@xxxxxxxxxx; Michal Simek <michals@xxxxxxxxxx> > Cc: dmaengine@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; linux-arm- > kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; git > <git@xxxxxxxxxx> > Subject: Re: [RFC v2 PATCH 6/7] dmaengine: xilinx_dma: Use > tasklet_hi_schedule for timing critical usecase > > On 4/9/21 7:56 PM, Radhey Shyam Pandey wrote: > > Schedule tasklet with high priority to ensure that callback processing > > is prioritized. It improves throughput for netdev dma clients. > Do you have specific numbers on the throughput improvement? IIRC there was ~5% performance improvement but I did that a long back on an older kernel 4.8 and after that onward I always checked overall performance (having all optimization applied). In next version i will redo incremental profiling and capture improvement % in the commit description. Thanks, Radhey
