Re: [PATCH v2 4/4] perf-top: add --max-stack option to limit callchainstack scan

[David Ahern]

On 10/18/13 8:38 AM, Waiman Long wrote:
> When the callgraph function is enabled (-G), it may take a long time to
> scan all the stack data and merge them accordingly.
>
> This patch adds a new --max-stack option to perf-top to limit the depth
> of callchain stack data to look at to reduce the time it takes for
> perf-top to finish its processing. It reduces the amount of information
> provided to the user in exchange for faster speed.
>
> Signed-off-by: Waiman Long <Waiman.Long@xxxxxx>
> ---
>   tools/perf/Documentation/perf-top.txt |    8 ++++++++
>   tools/perf/builtin-top.c              |    8 ++++++--
>   tools/perf/util/top.h                 |    1 +
>   3 files changed, 15 insertions(+), 2 deletions(-)

Looks good to me. Acked-by: David Ahern <dsahern@xxxxxxxxx>


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