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Internet Message Format  |  1992-08-20  |  1.7 KB
  1. Path: sparky!uunet!stanford.edu!agate!dog.ee.lbl.gov!lbl.gov!vxwexplo
  2. From: cnaka@amd-1s.hac.com (Cary Nakamura)
  3. Newsgroups: comp.os.vxworks
  4. Subject: VME backplane speedup
  5. Date: Thu, 20 Aug 92 16:57:38 PDT
  6. Organization: Lawrence Berkeley Laboratory, Berkeley CA
  7. Lines: 38
  8. Sender: vxwexplo@lbl.gov
  9. Message-ID: <9208202357.AA19803@amd-1s.hac.com>
  10. NNTP-Posting-Host: 128.3.112.16
  11. Originator: daemon@vxw.ee.lbl.gov
  12.  
  13.  
  14.  
  15. To: The VxWorks Exploder...
  16.  
  17.     I have a VME-based system which is sending data between
  18.     a Motorola MVME167 ('040, 33 Mhz) and a second board using
  19.     an '030.  The VxWorks sockets mechanism of data transfer
  20.     between two processes, each running on a different VME board
  21.     is too slow for the amount of data I am transferring.
  22.  
  23.     For example, has anyone implemented a way to use the 167s DMA 
  24.     transfer capability to boost data transfer?
  25.  
  26. Thanks,
  27.  
  28. Cary Nakamura
  29.  
  30. Please return mail to cnaka@amd-1s.hac.com
  31.  
  32.  
  33.     P.S.  I realize that Wind River is at work to improve data transfer,
  34.     but I can't wait until their improvements are done.  I need it ASAP.
  35.  
  36. +---------------------------------------------+
  37. |                                             |
  38. |             Cary Nakamura        HUGHES     |
  39. |   Hughes Aircraft Company                   |
  40. |                                             |
  41. |       Mailstop 617 / N204                   |
  42. |             P.O. Box 3310                   |
  43. |   or 1901 W. Malvern Ave.                   |
  44. |      Fullerton, CA  92634                   |
  45. |                                             |
  46. |            (714) 732-8822                   |
  47. |       FAX: (714) 732-0497                   |
  48. |      cnaka@amd-1s.hac.com                   |
  49. |                                             |
  50. +---------------------------------------------+
  51.