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| author |   David S. Miller <davem@davemloft.net> | 2021-11-17 14:56:16 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-11-17 14:56:16 +0000 |
| commit | 17a7555bf21ce755219bf575b8a83adbf19580bd (patch) | |
| tree | f65c3ea6e59bec67d28be3c77a713689433b0ff6 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Merge tag 'for-net-next-2021-11-16' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next (diff) | |
| parent | net: no longer stop all TX queues in dev_watchdog() (diff) | |
| download | wireguard-linux-17a7555bf21ce755219bf575b8a83adbf19580bd.tar.xz wireguard-linux-17a7555bf21ce755219bf575b8a83adbf19580bd.zip | |
Merge branch 'dev_watchdog-less-intrusive'
Eric Dumazet says:
====================
net: make dev_watchdog() less intrusive
dev_watchdog() is used on many NIC to periodically monitor TX queues
to detect hangs.
Problem is : It stops all queues, then check them, then 'unfreeze' them.
Not only this stops feeding the NIC, it also migrates all qdiscs
to be serviced on the cpu calling netif_tx_unlock(), causing
a potential latency artifact.
With many TX queues, this is becoming more visible.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
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