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| author | David S. Miller <[email protected]> | 2017-08-24 18:59:37 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2017-08-24 18:59:37 +0000 |
| commit | e7d12ce121aa474ea6984ea1255a7bd85c09454f (patch) | |
| tree | bda1e6b0dc4649bdc45162c59b6d1df6e2ecdf2f /net/ipv6/sysctl_net_ipv6.c | |
| parent | Merge branch 'mlxsw-ipv4-host-dpipe-table' (diff) | |
| parent | xdp: get tracepoints xdp_exception and xdp_redirect in sync (diff) | |
| download | kernel-e7d12ce121aa474ea6984ea1255a7bd85c09454f.tar.gz kernel-e7d12ce121aa474ea6984ea1255a7bd85c09454f.zip | |
Merge branch 'xdp-more-work-on-xdp-tracepoints'
Jesper Dangaard Brouer says:
====================
xdp: more work on xdp tracepoints
More work on streamlining and performance optimizing the tracepoints
for XDP.
I've created a simple xdp_monitor application that uses this
tracepoint, and prints statistics. Available at github:
https://github.com/netoptimizer/prototype-kernel/blob/master/kernel/samples/bpf/xdp_monitor_kern.c
https://github.com/netoptimizer/prototype-kernel/blob/master/kernel/samples/bpf/xdp_monitor_user.c
The improvement over tracepoint with strcpy: 9810372 - 8428762 = +1381610 pps faster
- (1/9810372 - 1/8428762)*10^9 = -16.7 nanosec
- 100-(8428762/9810372*100) = strcpy-trace is 14.08% slower
- 981037/8428762*100 = removing strcpy made it 11.64% faster
V3: Fix merge conflict with commit e4a8e817d3cb ("bpf: misc xdp redirect cleanups")
V2: Change trace_xdp_redirect() to align with args of trace_xdp_exception()
====================
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/ipv6/sysctl_net_ipv6.c')
0 files changed, 0 insertions, 0 deletions