From: Jakub Kicinski <kuba@kernel•org>
To: davem@davemloft•net
Cc: netdev@vger•kernel.org, edumazet@google•com, pabeni@redhat•com,
andrew+netdev@lunn•ch, horms@kernel•org, shuah@kernel•org,
willemb@google•com, petrm@nvidia•com, donald.hunter@gmail•com,
michael.chan@broadcom•com, pavan.chebbi@broadcom•com,
linux-kselftest@vger•kernel.org, Jakub Kicinski <kuba@kernel•org>
Subject: [PATCH net-next v2 5/9] selftests: drv-net: give HW stats sync time extra 25% of margin
Date: Fri, 6 Feb 2026 16:35:05 -0800 [thread overview]
Message-ID: <20260207003509.3927744-6-kuba@kernel.org> (raw)
In-Reply-To: <20260207003509.3927744-1-kuba@kernel.org>
There are transient failures for devices which update stats
periodically, especially if it's the FW DMA'ing the stats
rather than host periodic work querying the FW. Wait 25%
longer than strictly necessary.
For devices which don't report stats-block-usecs we retain
25 msec as the default wait time (0.025sec == 20,000usec * 1.25).
Reviewed-by: Petr Machata <petrm@nvidia•com>
Signed-off-by: Jakub Kicinski <kuba@kernel•org>
---
tools/testing/selftests/drivers/net/lib/py/env.py | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/drivers/net/lib/py/env.py b/tools/testing/selftests/drivers/net/lib/py/env.py
index 41cc248ac848..39a98eb2592e 100644
--- a/tools/testing/selftests/drivers/net/lib/py/env.py
+++ b/tools/testing/selftests/drivers/net/lib/py/env.py
@@ -285,7 +285,7 @@ from .remote import Remote
if "Operation not supported" not in e.cmd.stderr:
raise
- self._stats_settle_time = 0.025 + \
- data.get('stats-block-usecs', 0) / 1000 / 1000
+ self._stats_settle_time = \
+ 1.25 * data.get('stats-block-usecs', 20000) / 1000 / 1000
time.sleep(self._stats_settle_time)
--
2.53.0
next prev parent reply other threads:[~2026-02-07 0:35 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-07 0:35 [PATCH net-next v2 0/9] net: stats, tools, driver tests for HW GRO Jakub Kicinski
2026-02-07 0:35 ` [PATCH net-next v2 1/9] eth: bnxt: gather and report HW-GRO stats Jakub Kicinski
2026-02-08 0:09 ` Michael Chan
2026-02-11 1:51 ` Jakub Kicinski
2026-02-07 0:35 ` [PATCH net-next v2 2/9] tools: ynltool: factor out qstat dumping Jakub Kicinski
2026-02-07 0:35 ` [PATCH net-next v2 3/9] tools: ynltool: add qstats analysis for HW-GRO efficiency / savings Jakub Kicinski
2026-02-09 9:43 ` Petr Machata
2026-02-07 0:35 ` [PATCH net-next v2 4/9] selftests: net: move gro to lib for HW vs SW reuse Jakub Kicinski
2026-02-09 2:36 ` Willem de Bruijn
2026-02-07 0:35 ` Jakub Kicinski [this message]
2026-02-09 2:37 ` [PATCH net-next v2 5/9] selftests: drv-net: give HW stats sync time extra 25% of margin Willem de Bruijn
2026-02-07 0:35 ` [PATCH net-next v2 6/9] selftests: drv-net: gro: use SO_TXTIME to schedule packets together Jakub Kicinski
2026-02-09 2:39 ` Willem de Bruijn
2026-02-11 1:56 ` Jakub Kicinski
2026-02-11 3:15 ` Willem de Bruijn
2026-02-11 3:48 ` Jakub Kicinski
2026-02-11 4:21 ` Willem de Bruijn
2026-02-11 17:00 ` Jakub Kicinski
2026-02-11 17:22 ` Willem de Bruijn
2026-02-07 0:35 ` [PATCH net-next v2 7/9] selftests: drv-net: gro: test GRO stats Jakub Kicinski
2026-02-07 0:35 ` [PATCH net-next v2 8/9] selftests: drv-net: gro: add test for packet ordering Jakub Kicinski
2026-02-07 0:35 ` [PATCH net-next v2 9/9] selftests: drv-net: gro: add a test for GRO depth Jakub Kicinski
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