Messages in this thread | | | Date | Tue, 12 Jan 2016 16:45:36 -0500 (EST) | Subject | Re: [PATCH v2 net-next 0/4] bpf: bpf_htab: Add BPF_MAP_TYPE_PERCPU_HASH | From | David Miller <> |
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From: Martin KaFai Lau <kafai@fb.com> Date: Tue, 12 Jan 2016 00:20:48 -0800
> BPF + kprobe is very useful in statistics collection. In particular, > bpf is strong in doing aggregation within the kernel instead of > outputting a lot of raw samples to the userspace. > > In some cases, bumping a counter/value of a particular key will have > noticeable impact. For example, doing statistics collection > on received packets and aggregating them by network > prefix (like /64 in IPv6). Having a percpu value can help.
Please:
http://marc.info/?l=linux-netdev&m=145248145925834&w=2
Thanks.
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