d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net/qede: remove prefetch in Tx path

Browse Source 
Incorrect placement of prefetch in Tx path is causing
a performance drop of around ~2% on AMD platform.

Fixes: 2ea6f76aff40 ("qede: add core driver")
Cc: stable@dpdk.org

Signed-off-by: Shahed Shaikh <shshaikh@marvell.com>
Acked-by: Rasesh Mody <rmody@marvell.com>
This commit is contained in:
Shahed Shaikh 2019-01-18 02:29:30 -08:00 committed by Thomas Monjalon
parent 8f23124745
commit d6ddd17fb1
1 changed files with 0 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/qede/qede_rxtx.c
View File

@ -2181,7 +2181,6 @@ qede_xmit_pkts(void *p_txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
txq->nb_tx_avail -= bd1->data.nbds;
txq->sw_tx_prod++;
rte_prefetch0(txq->sw_tx_ring[TX_PROD(txq)].mbuf);
bd_prod =
rte_cpu_to_le_16(ecore_chain_get_prod_idx(&txq->tx_pbl));
#ifdef RTE_LIBRTE_QEDE_DEBUG_TX