diff mbox series

[net-next,v4,4/4] nfp: use new dim profiles for better latency

Message ID 20240405081547.20676-5-louis.peens@corigine.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series nfp: series of minor driver improvements | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 942 this patch: 942
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 3 maintainers not CCed: edumazet@google.com horms@kernel.org yinjun.zhang@corigine.com
netdev/build_clang success Errors and warnings before: 953 this patch: 953
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 953 this patch: 953
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 14 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 3 this patch: 3
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-04-07--00-00 (tests: 956)

Commit Message

Louis Peens April 5, 2024, 8:15 a.m. UTC 
From: Fei Qin <fei.qin@corigine.com>

Latency comparison between EQE profiles and SPECIFIC_0 profiles
for 5 different runs:

                                     Latency (us)
EQE profiles 	    |	132.85  136.32  131.31  131.37  133.51
SPECIFIC_0 profiles |	92.09   92.16   95.58   98.26   89.79

Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
---
 drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Simon Horman April 8, 2024, 1:13 p.m. UTC | #1 
On Fri, Apr 05, 2024 at 10:15:47AM +0200, Louis Peens wrote:
> From: Fei Qin <fei.qin@corigine.com>
> 
> Latency comparison between EQE profiles and SPECIFIC_0 profiles
> for 5 different runs:
> 
>                                      Latency (us)
> EQE profiles 	    |	132.85  136.32  131.31  131.37  133.51
> SPECIFIC_0 profiles |	92.09   92.16   95.58   98.26   89.79

Nice improvement :)

> Signed-off-by: Fei Qin <fei.qin@corigine.com>
> Signed-off-by: Louis Peens <louis.peens@corigine.com>

Reviewed-by: Simon Horman <horms@kernel.org>

...
diff mbox series

Patch

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 997cc4fcffdb..4c2dac1e1be4 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -1232,12 +1232,12 @@  static void nfp_net_open_stack(struct nfp_net *nn)
 
 		if (r_vec->rx_ring) {
 			INIT_WORK(&r_vec->rx_dim.work, nfp_net_rx_dim_work);
-			r_vec->rx_dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
+			r_vec->rx_dim.mode = DIM_CQ_PERIOD_MODE_SPECIFIC_0;
 		}
 
 		if (r_vec->tx_ring) {
 			INIT_WORK(&r_vec->tx_dim.work, nfp_net_tx_dim_work);
-			r_vec->tx_dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
+			r_vec->tx_dim.mode = DIM_CQ_PERIOD_MODE_SPECIFIC_0;
 		}
 
 		napi_enable(&r_vec->napi);