On 6/1/21 7:42 PM, Jussi Maki wrote:
Hi Robin,
On Tue, Jun 1, 2021 at 2:39 PM Robin Murphy wrote:
The regression shows as a significant drop in throughput as measured
with "super_netperf" [0],
with measured bandwidth of ~95Gbps before and ~35Gbps after:
I guess that must be the difference be
[ ping Robin / Joerg, +Cc Christoph ]
On 5/28/21 10:34 AM, Jussi Maki wrote:
Hi all,
While measuring the impact of a kernel patch on our lab machines I stumbled upon
a performance regression affecting the 100Gbit ICE nic and bisected it
from range v5.11.1..v5.13-rc3 to the commit:
a250c23f15c2
On 7/8/20 9:44 AM, Christoph Hellwig wrote:
On Mon, Jun 29, 2020 at 03:39:01PM +0200, Björn Töpel wrote:
On 2020-06-29 15:03, Christoph Hellwig wrote:
Hi all,
this series lifts the somewhat hacky checks in the XSK code if a DMA
streaming mapping needs dma_sync_single_for_{device,cpu} calls to
On 6/30/20 7:07 AM, Christoph Hellwig wrote:
On Mon, Jun 29, 2020 at 05:18:38PM +0200, Daniel Borkmann wrote:
On 6/29/20 5:10 PM, Björn Töpel wrote:
On 2020-06-29 15:52, Daniel Borkmann wrote:
Ok, fair enough, please work with DMA folks to get this properly integrated and
restored then
On 6/29/20 5:10 PM, Björn Töpel wrote:
On 2020-06-29 15:52, Daniel Borkmann wrote:
Ok, fair enough, please work with DMA folks to get this properly integrated and
restored then. Applied, thanks!
Daniel, you were too quick! Please revert this one; Christoph just submitted a
4-patch-series
On 6/28/20 7:16 PM, Björn Töpel wrote:
On 2020-06-27 09:04, Christoph Hellwig wrote:
On Sat, Jun 27, 2020 at 01:00:19AM +0200, Daniel Borkmann wrote:
Given there is roughly a ~5 weeks window at max where this removal could
still be applied in the worst case, could we come up with a fix
On 6/26/20 3:43 PM, Björn Töpel wrote:
From: Björn Töpel
When the AF_XDP buffer allocation API was introduced it had an
optimization, "cheap_dma". The idea was that when the umem was DMA
mapped, the pool also checked whether the mapping required a
synchronization (CPU to device, and vice versa)
