HP Visualize J5000 HP Workstations - Graphics Administration Guide For Red Hat - Page 20

Determining swap performance, Supported devices, Display power management signaling (DPMS)

Get HP Visualize J5000 - Workstation PDF manuals and user guides View all HP Visualize J5000 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 20 highlights

relative swapping performance on a per-visual basis. The XdbeScreenVisualInfo() function returns information about the swapping performance levels for the double-buffering visuals on a display. A visual with a higher performance level is likely to have better double-buffer graphics performance than a visual with a lower performance level. Nothing can be deduced from any of the following: the magnitude of the difference of two performance levels, a performance level in isolation, or comparing performance levels from different servers. For more information, refer to the DBE man page on XdbeScreenVisualInfo(). Supported devices The X server supports DBE on the following devices: • HP VISUALIZE-FX5 and FX10 Display power management signaling (DPMS) Monitors constitute a large percentage of the power used by a workstation even when not actively in use (i.e., during screen blanking). In order to reduce the power consumption, the Video Electronic Standards Association (VESA) has defined a Display Power Management Signaling (DPMS) standard which can be used to greatly reduce the amount of power being used by a monitor during screen blanking. The X server features the ability to make use of DPMS on the following graphics devices: • HP VISUALIZE-FX5 and FX10 The following table is a description of the states that are defined by VESA. The Power Savings column indicates (roughly) the level of power savings achieved in the given state. The Recovery Time is the amount of time that the screen takes to return to a usable state when the screen saver is turned off (by pressing a key or the moving the mouse). Power-Saving States Defined by VESA Level 0 State Screen DPMS Compliance Requirements Not Applicable Power Savings None Recovery Time Very Short Graphics Administration Guide For Red Hat Linux 6.2

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
relative swapping performance on a per-visual basis. The
XdbeScreenVisualInfo()
function returns information about the swapping
performance levels for the double-buffering visuals on a display. A visual with a
higher performance level is likely to have better double-buffer graphics
performance than a visual with a lower performance level. Nothing can be
deduced from any of the following: the magnitude of the difference of two
performance levels, a performance level in isolation, or comparing performance
levels from different servers.
For more information, refer to the DBE man page on
XdbeScreenVisualInfo()
.
Supported devices
The X server supports DBE on the following devices:
•
HP V
ISUALIZE
-FX
5
and FX
10
Display power management signaling (DPMS)
Monitors constitute a large percentage of the power used by a workstation even
when not actively in use (i.e., during screen blanking). In order to reduce the
power consumption, the Video Electronic Standards Association (VESA) has
defined a Display Power Management Signaling (DPMS) standard which can be
used to greatly reduce the amount of power being used by a monitor during screen
blanking.
The X server features the ability to make use of DPMS on the following graphics
devices:
•
HP V
ISUALIZE
-FX
5
and FX
10
The following table is a description of the states that are defined by VESA. The
Power Savings column indicates (roughly) the level of power savings achieved in
the given state. The Recovery Time is the amount of time that the screen takes to
return to a usable state when the screen saver is turned off (by pressing a key or
the moving the mouse).
Power-Saving States Defined by VESA
Level
State
DPMS
Compliance
Requirements
Power
Savings
Recovery
Time
0
Screen
Not Applicable
None
Very Short
Graphics Administration Guide For Red Hat Linux 6.2