FreeCalypso > hg > freecalypso-tools
annotate doc/Loadtools-performance @ 612:52980e3a51c7
fc-loadtool: added operation time reporting to flash program-bin
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 24 Feb 2020 21:56:53 +0000 |
parents | c847d742ab38 |
children | ab4021fb1c66 |
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1 Here are the expected run times for the flash dump2bin operation of dumping the |
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2 entire flash content of a Calypso GSM device: |
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3 |
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4 Dump of 4 MiB flash (e.g., Openmoko GTA01/02 or Mot C139/140) at 115200 baud: |
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5 12m53s |
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6 |
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7 The same 4 MiB flash dump at 812500 baud: 1m50s |
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8 |
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9 Dump of 8 MiB flash (e.g., Mot C155/156) at 812500 baud: 3m40s |
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10 |
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11 Because of the architecture of fc-loadtool and its loadagent back-end, the run |
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12 time of a flash dump operation depends only on the serial baud rate and the |
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13 size of the flash area to be dumped; it should not depend on the USB-serial |
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14 adapter type or any host system properties, as long as the host system and |
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15 serial adapter combination supports the desired baud rate. In contrast, flash |
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16 programming and fc-xram loading operations are quite different in that their |
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17 run times do depend on the host system and USB-serial adapter or other serial |
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18 port hardware - this host system dependency exists because of the way these |
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19 operations are implemented in our architecture. |
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20 |
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21 [To be continued] |