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| author | David S. Miller <davem@davemloft.net> | 2017-08-30 11:20:09 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-30 11:20:09 -0700 |
| commit | 2c667d40a67a6a49343a75437b5e49d301a07a53 (patch) | |
| tree | a4635a632732b39ef560a8f72eb3a81d04f01605 /tools/perf/scripts/python | |
| parent | staging: irda: fix init level for irda core (diff) | |
| parent | tcp: Revert "tcp: remove header prediction" (diff) | |
| download | linux-2c667d40a67a6a49343a75437b5e49d301a07a53.tar.gz linux-2c667d40a67a6a49343a75437b5e49d301a07a53.zip | |
Merge branch 'tcp-readd-hp'
Florian Westphal says:
====================
tcp: re-add header prediction
Eric reported a performance regression caused by header prediction
removal.
We now call tcp_ack() much more frequently, for some workloads
this brings in enough cache line misses to become noticeable.
We could possibly still kill HP provided we find a different
way to suppress unneeded tcp_ack, but given we're late in
the cycle it seems preferable to revert.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python')
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