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(parent: 73d9f82) | patch
net: proc: speedup /proc/net/netstat
authorEric Dumazet <edumazet@google.com>
Thu, 28 Jan 2021 16:21:45 +0000 (08:21 -0800)
committerJakub Kicinski <kuba@kernel.org>
Sat, 30 Jan 2021 04:59:53 +0000 (20:59 -0800)
commit341481c8f5f58ac2d184554405d64222f9c7f5cd
tree3e5c70083f679eb9054fa4f4d8ff2aa026ea278btree | snapshot
parent73d9f82104174f808eafacfe6c3a4f6c737b1677commit | diff
net: proc: speedup /proc/net/netstat

Use cache friendly helpers to better use cpu caches
while reading /proc/net/netstat

Tested on a platform with 256 threads (AMD Rome)

Before: 305 usec spent in netstat_seq_show()
After: 130 usec spent in netstat_seq_show()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20210128162145.1703601-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/ipv4/proc.c diff | blob | history
Linux Kernel Source Tree.