I am facing a strange problem with graphics performance.
My hardware/software setup:
DU 4.0d, Open3D 4.7/4.8(tried both)
LX board 533 Mhz, 256Mb Ram, 512 Mb swap,ZLXp-L2
graphics adapter, non-DEC 19" monitor (ELSA Ecomo,
very good multisync)
I started with a benchmark from our postprocessing
software EnSight which uses OpenGL calls. The benchmark
is rotating a wireframe model (-> lines) and the
same model with shaded surfaces (->polygons). The first
time it yielded only 120k lines/sec and 40k polys/sec which
is comparable to a 200Mhz Pentium Pro with S3 Virge
card on NT4.0 (that should not offer any hardware accel I
think). During the benchmark Xdec only gets 4-8% of
the cpu time, the rest of the machine is idle. However
if I turn the window into an icon or switch workspace,
Xdec gets almost 100% cpu time to give 2200k lines/sec and
680k polys/sec. The difference in the performance pretty
well scales with the amount of cpu percentage Xdec gets.
I talked to the guys at EnSight support and they didn't
know a solution, either. The assumed that I don't get
hardware support in the first case.
Similar things acually happen with programs that continously
calculate data and plot on the screen (simple x-y line data)
(via Xlib). It appears to me that there is a serious
misconfiguration. I did gl_ivp which gives no error message.
Attached is the output of xdpyinfo.
Thanks for your help
Christian
c.hasse_at_itm.rwth-aachen.de
name of display: :0.0
version number: 11.0
vendor string: DECWINDOWS Digital Equipment Corporation Digital UNIX V4.0
vendor release number: 1
maximum request size: 4194300 bytes
motion buffer size: 100
bitmap unit, bit order, padding: 32, LSBFirst, 32
image byte order: LSBFirst
number of supported pixmap formats: 5
supported pixmap formats:
depth 1, bits_per_pixel 1, scanline_pad 32
depth 4, bits_per_pixel 8, scanline_pad 32
depth 8, bits_per_pixel 8, scanline_pad 32
depth 12, bits_per_pixel 32, scanline_pad 32
depth 24, bits_per_pixel 32, scanline_pad 32
keycode range: minimum 8, maximum 255
focus: window 0xc0000d, revert to PointerRoot
number of extensions: 24
Adobe-DPS-Extension
BIG-REQUESTS
DEC-PEER-GLX
DEC-XTRAP
DECStereo
DOUBLE-BUFFER
DPMS
DPSExtension
GLX
Keyboard-Management-Extension
MIT-SCREEN-SAVER
MIT-SHM
MIT-SUNDRY-NONSTANDARD
Multi-Buffering
SHAPE
SYNC
Shared-Memory Transport
X3D-PEX
XC-MISC
XIE
XInputExtension
XKEYBOARD
XTEST
XVideo
default screen number: 0
number of screens: 1
screen #0:
dimensions: 1280x1024 pixels (346x277 millimeters)
resolution: 94x94 dots per inch
depths (4): 1, 24, 8, 4
root window id: 0x32
depth of root window: 24 planes
number of colormaps: minimum 3, maximum 6
default colormap: 0x2e
default number of colormap cells: 256
preallocated pixels: black 0, white 16777215
options: backing-store YES, save-unders YES
largest cursor: 64x64
current input event mask: 0x30003c
ButtonPressMask ButtonReleaseMask EnterWindowMask
LeaveWindowMask SubstructureRedirectMask FocusChangeMask
number of visuals: 13
default visual id: 0x20
visual:
visual id: 0x20
class: TrueColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff0000, 0xff00, 0xff
significant bits in color specification: 8 bits
visual:
visual id: 0x21
class: TrueColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff0000, 0xff00, 0xff
significant bits in color specification: 8 bits
visual:
visual id: 0x22
class: TrueColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff0000, 0xff00, 0xff
significant bits in color specification: 8 bits
visual:
visual id: 0x23
class: TrueColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff0000, 0xff00, 0xff
significant bits in color specification: 8 bits
visual:
visual id: 0x24
class: DirectColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff0000, 0xff00, 0xff
significant bits in color specification: 8 bits
visual:
visual id: 0x25
class: PseudoColor
depth: 8 planes
available colormap entries: 256
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x26
class: PseudoColor
depth: 8 planes
available colormap entries: 256
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x27
class: StaticGray
depth: 8 planes
available colormap entries: 256
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x28
class: StaticColor
depth: 8 planes
available colormap entries: 256
red, green, blue masks: 0xe0, 0x1c, 0x3
significant bits in color specification: 8 bits
visual:
visual id: 0x29
class: TrueColor
depth: 8 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xe0, 0x1c, 0x3
significant bits in color specification: 8 bits
visual:
visual id: 0x2a
class: TrueColor
depth: 8 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xe0, 0x1c, 0x3
significant bits in color specification: 8 bits
visual:
visual id: 0x2b
class: GrayScale
depth: 8 planes
available colormap entries: 256
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x2c
class: PseudoColor
depth: 4 planes
available colormap entries: 16
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
Received on Tue Dec 01 1998 - 08:40:26 NZDT