[visionegg] Re: latest xfree86: sync buffer swapping with ATIRadeon

vsync buffer swapping seems to work.

below 4 logs, differing whether max priority and/or vsync was enabled.



unplugged network cable, evolution and mozilla closed

(1) sync, no max priority
2003-04-29 11:57:15 (2070) WARNING: Calculated frames per second was 45.533,
    while the VISIONEGG_MONITOR_REFRESH_HZ variable is 60.0.
2003-04-29 11:57:15 (2070) WARNING: One or more frames took 291.3 msec,
    which is signficantly longer than the expected inter frame interval
    of 16.7 msec for your frame rate (60.0 Hz).
2003-04-29 11:57:15 (2070) info: In the last "go" loop, 55 frames were drawn.
Mean frame was 21.96 msec (45.53 fps), longest frame was 291.32 msec.
histogram:
    46                                              *
    41                                              *
    36                                              *
    31                                              *
    26                                              *
    20                                              *
    15                                              *
    10                                              *
     5                                              *
     0           *                                  *    *              *
 Time:    0    2    4    6    8   10   12   14   16   18   20   22   24 +(msec)
Total:      0    1    0    0    0    0    0    0    51   1    0    0    2
 

(2) sync, with max priority
2003-04-29 11:58:39 (2071) WARNING: Calculated frames per second was 60.678,
    while the VISIONEGG_MONITOR_REFRESH_HZ variable is 60.0.
2003-04-29 11:58:39 (2071) info: In the last "go" loop, 73 frames were drawn.
Mean frame was 16.48 msec (60.68 fps), longest frame was 24.85 msec.
histogram:
    61                                              *
    54                                              *
    48                                              *
    41                                              *
    34                                              *
    27                                              *
    20                                              *
    14                                              *
     7                                              *
     0           *                   *    *         *    *              *
 Time:    0    2    4    6    8   10   12   14   16   18   20   22   24 +(msec)
Total:      0    1    0    0    0    1    1    0    68   1    0    0    1


(3) no sync, no max priority
2003-04-29 11:59:47 (2072) WARNING: Calculated frames per second was 335.557,
    while the VISIONEGG_MONITOR_REFRESH_HZ variable is 60.0.
2003-04-29 11:59:47 (2072) WARNING: One or more frames took 132.0 msec,
    which is signficantly longer than the expected inter frame interval
    of 16.7 msec for your frame rate (60.0 Hz).
2003-04-29 11:59:47 (2072) info: In the last "go" loop, 403 frames were drawn.
Mean frame was 2.98 msec (335.56 fps), longest frame was 132.00 msec.
histogram:
   197      *
   175      *    *
   153      *    *
   131      *    *
   110      *    *
    88      *    *
    66      *    *
    44      *    *
    22      *    *
     0      *    *         *                                       *    *
 Time:    0    2    4    6    8   10   12   14   16   18   20   22   24 +(msec)
Total:     219  177   0    2    0    0    0    0    0    0    0    1    4


(3) no sync, with max priority
2003-04-29 12:00:21 (2073) WARNING: Calculated frames per second was 418.629,
    while the VISIONEGG_MONITOR_REFRESH_HZ variable is 60.0.
2003-04-29 12:00:21 (2073) info: In the last "go" loop, 503 frames were drawn.
Mean frame was 2.39 msec (418.63 fps), longest frame was 19.23 msec.
histogram:
   235      *    *
   209      *    *
   183      *    *
   157      *    *
   131      *    *
   104      *    *
    78      *    *
    52      *    *
    26      *    *
     0      *    *         *                             *
 Time:    0    2    4    6    8   10   12   14   16   18   20   22   24 +(msec)
Total:     261  238   0    1    0    0    0    0    0    3    0    0    0


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