> From: Morten Brørup [mailto:m...@smartsharesystems.com] > Sent: Tuesday, 24 June 2025 08.13 > > When fast releasing mbufs, the mbufs are not accessed, so do not prefetch > them. > This saves a mbuf load operation for each fast released TX mbuf. > > When fast release of mbufs is enabled for a TX queue, cache the mbuf > mempool pointer in the TX queue structure. > This saves one mbuf load operation for each burst of fast released TX > mbufs. > > The txep->mbuf pointer is not used after the mbuf has been freed, so do > not reset the pointer. > This saves a txep store operation for each TX mbuf freed. > > Signed-off-by: Morten Brørup <m...@smartsharesystems.com> > ---
After further consideration, I think this patch should be split in two: 1. Remove superfluous code: prefetching mbufs and resetting txep->mbuf pointers. 2. Cache the mbuf mempool pointer for FAST_FREE. -Morten
