Experimental Physics and
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It is always a good idea to constantly seek improvement on EPICS. However, I am not unhappy about its CA performance so far. Sometimes, its perfromance is coupled with the hardware, software and PC that is used in your system. In Nov. 2007, I was able to "display real-time image" at an average of 20 Mbytes/sec (a max. of 22 Mbytes/sec) while the camera was transferring the image data at 28 Mbytes/sec to the system memory via the 1GHz network. The performance is up by 33 % since the paper was published in ICALEPCS07 conference, which was held in Oct.. See http://accelconf.web.cern.ch/accelconf/ica07/PAPERS/WPPB12.PDF The system configuration is mvme5500/firewire/Linux PC. The better news is that I do not think I hit the bottleneck yet. 1) I could still improve the mvme5500 BSP that I wrote to have higher performance. 2) The perfromance is estimated to be at least twice higher with the mvme6100 support in the "disco" BSP, which I derived from the mvme5500 BSP that I wrote. "disoc" BSP supports the discovery based board such as mvme5500 and mvme6100. However, the analysis of 1) and 2) is not a high priority task to me presently. Only the sky is the limit. Cheers, Kate
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ANJ, 02 Sep 2010 |
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