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| author | Jakub Kicinski <kuba@kernel.org> | 2025-10-15 09:04:23 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-10-15 09:04:24 -0700 |
| commit | 4ca05145d4f8bee76fb8c5309799587347bebac4 (patch) | |
| tree | 7b9256dbfdd79a9b2f7b870f8f9b171847ca1b17 /net/tipc | |
| parent | 1c51450f1afff1e7419797720df3fbd9ccbf610c (diff) | |
| parent | 4a7708443dec13b074bc43855f494358fedbd3c0 (diff) | |
Merge branch 'net-deal-with-sticky-tx-queues'
Eric Dumazet says:
====================
net: deal with sticky tx queues
Back in 2010, Tom Herbert added skb->ooo_okay to TCP flows.
Extend the feature to connected flows for other protocols like UDP.
skb->ooo_okay might never be set for bulk flows that always
have at least one skb in a qdisc queue of NIC queue,
especially if TX completion is delayed because of a stressed cpu
or aggressive interrupt mitigation.
The so-called "strange attractors" has caused many performance
issues, we need to do better now that TCP reacts better to
potential reorders.
Add new net.core.txq_reselection_ms sysctl to let
flows follow XPS and select a more efficient queue.
After this series, we no longer have to make sure threads
are pinned to cpus, they can migrate without adding
too much [spinlock, qdisc, TX completion] pressure anymore.
====================
Link: https://patch.msgid.link/20251013152234.842065-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/tipc')
0 files changed, 0 insertions, 0 deletions