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9a12c2e023
If you call ./cairo-perf-print --histogram results.txt, it will then print a histogram of the results, one per test. Ideally, you should see a skewed distribution (with a negative skew representing that most results run in optimal time), but random sampling errors (scheduling, throttling, general inefficiency etc) will push it more towards a normal distribution. For example, | x | | x xx | | x xx | | x xx | | xxxx | | xxxx x | | x xxxxxx | | x xxxxxx | | xxxxxxxxx | | xxxxxxxxx | | xxxxxxxxx | | xxxxxxxxxxxx | | xxxxxxxxxxxx | | xxxxxxxxxxxx | | xxxxxxxxxxxxxx | |x xxxxxxxxxxxxxx | |x x xxxxxxxxxxxxxxx | |x x xxxxxxxxxxxxxxx | |x x xxxxxxxxxxxxxxxxx | |xxx x xxxxxxxxxxxxxxxxxxx | |xxx xxxxxxxxxxxxxxxxxxxxxxxxx | |xxxxxx xxxx x x x x xxx xx xxxxx xxx x xxx x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx| .------------------------------------------------------------------------------. xlib firefox-fishtank 8298.44 1.53% (829/946) Starts off reasonably, but quickly deteriorates as the integrated CPU/GPU overheats and is forced to throttle. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/*
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* Copyright © 2006 Red Hat, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* the authors not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. The authors make no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Authors: Carl Worth <cworth@cworth.org>
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*/
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#ifndef _CAIRO_STATS_H_
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#define _CAIRO_STATS_H_
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#include "cairo-perf.h"
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void
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_cairo_stats_compute (cairo_stats_t *stats,
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cairo_time_t *values,
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int num_values);
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cairo_bool_t
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_cairo_histogram_init (cairo_histogram_t *h,
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int width, int height);
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cairo_bool_t
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_cairo_histogram_compute (cairo_histogram_t *h,
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const cairo_time_t *values,
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int num_values);
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void
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_cairo_histogram_printf (cairo_histogram_t *h,
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FILE *file);
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void
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_cairo_histogram_fini (cairo_histogram_t *h);
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#endif /* _CAIRO_STATS_H_ */
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