On Fri, Sep 26, 2025 at 04:55:01PM +0100, Simon Horman wrote:

On Fri, Sep 26, 2025 at 08:02:52AM -0700, Bobby Eshleman wrote:

quoted

This series improves the CPU cost of RX token management by replacing
the xarray allocator with an niov array and a uref field in niov.

Improvement is ~5% per RX user thread.

Two other approaches were tested, but with no improvement. Namely, 1)
using a hashmap for tokens and 2) keeping an xarray of atomic counters
but using RCU so that the hotpath could be mostly lockless. Neither of
these approaches proved better than the simple array in terms of CPU.

Running with a NCCL workload is still TODO, but I will follow up on this
thread with those results when done.

Signed-off-by: Bobby Eshleman <redacted>

Hi Bobby,

Unfortunately this patchset doesn't apply cleanly to net-next.
So you'll need to rebase and repost at some point.

-- 
pw-bot: changes-requested

Got it, just resent and added this check to my automation, thanks!

Best,
Bobby