| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 3296.1 | | OXNARD::KLEE | Ken Lee | Tue Sep 04 1990 17:27 | 6 |
| Yes, there is a limit. Your X server must have at least enough virtual
memory available to hold all the bitmaps you create. You should get a
BadAlloc error, rather than an IO-error, though.
Ken
|
| 3296.2 | How to extend virtual memory for X server? | TPOVC::JOHNNYHO | | Tue Sep 04 1990 23:44 | 14 |
| Thanks, Ken.
How do I extend the virtual memory for X Server? This is the critical
issue for customer! Actually, they are developing their mapping
software on DECwindows. The map they intend to handel with consists of
hundreds of files each repesents a portion of the big map. The total
size of the big map is as large as 160MB!
Maybe this is a very common question/problem for imaging software
developer -- "how do I handle a very large image on DECwindows?"
Could anyone give me some hints or guide lines?
Johnny
|
| 3296.3 | only load what you can use | TOOLEY::B_WACKER | | Wed Sep 05 1990 12:22 | 7 |
| You shouldn't load any more into the server than you can use at one
time. Probably what you need to do is reuse pixmaps. If you keep the
total size low then you'll also eliminate paging from display to
virtual memory and have much better performance. I don't think
increasing server memory to over 160M is a very good solution.
Bruce
|
| 3296.4 | Keep most of the map on the client | VINO::MCARLETON | Reality; what a concept! | Wed Sep 05 1990 12:27 | 12 |
|
Since the X Server could be on a remote node that does not support
virtual memory, it would be best if you could code the application so
that most of the map is stored in client memory. You can then copy the
currently displayed portion to server as needed, keeping the load on
the server small.
To do this you would use an XImage data structure on the client and
a XPutImage call to place the image in a window or pixmap on the server
screen.
MJC
|
| 3296.5 | adjust virtual memory size automatically? | TPOVC::JOHNNYHO | | Thu Sep 06 1990 00:10 | 5 |
| Thanks, folks,
If customer upgrade from 16 MB to 32 MB memory, will X server adjust
its virtual memory size automatically according to size of the system
memory? or shoud they modify some pa
|
| 3296.6 | | JAMMER::JACK | Marty Jack | Thu Sep 06 1990 11:05 | 2 |
| Generally yes, but you should always run an AUTOGEN after a hardware
configuration change.
|