Re: [PATCH net] udp: fix memory schedule error

[Paolo Abeni]

On Tue, 2023-02-21 at 19:03 +0800, Jason Xing wrote:
> From: Jason Xing <kernelxing@xxxxxxxxxxx>
> 
> Quoting from the commit 7c80b038d23e ("net: fix sk_wmem_schedule()
> and sk_rmem_schedule() errors"):
> 
> "If sk->sk_forward_alloc is 150000, and we need to schedule 150001 bytes,
> we want to allocate 1 byte more (rounded up to one page),
> instead of 150001"

I'm wondering if this would cause measurable (even small) performance
regression? Specifically under high packet rate, with BH and user-space
processing happening on different CPUs.

Could you please provide the relevant performance figures?

Thanks!

Paolo