Hi all,
I’m currently using Ftrace with tracepoints to trace several events in
kernel. But I found the tracing overhead is a little high.
I found the major overhead comes from
“local_dec(_buffer->committing);” in rb_end_commit() function.
local_dec() will invoke atomic_long_dec(), which finally
Any ideas or suggestions?
Best,
Tim
On Fri, Aug 2, 2019 at 1:41 AM Fang Zhou wrote:
>
> Hi all,
>
> I’m currently using Ftrace with tracepoints to trace several events in
> kernel. But I found the tracing overhead is a little high.
>
> I found the major overhead comes from
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