linux-kernel - Re: [PATCH] perf script: introduce deltatime option

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Message-ID: <20200205172215.GG302770@tassilo.jf.intel.com>
Date:   Wed, 5 Feb 2020 09:22:15 -0800
From:   Andi Kleen <ak@...ux.intel.com>
To:     Hagen Paul Pfeifer <hagen@...u.net>
Cc:     linux-kernel@...r.kernel.org,
        Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: [PATCH] perf script: introduce deltatime option

> reltime is relative to the *first event* in the record - deltatime is relative
> to the *previous* event.

Ah ok.

I think it's useful, but you should rather implement it as a new field instead
of as an option. There might be use cases where you want both.

delta time is easier for reading, but absolute time is often important 
to find something in a trace.

-Andi