FreeCalypso > hg > freecalypso-tools

annotate doc/Loadtools-performance @ 611:c847d742ab38

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/Loadtools-performance: article started
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 24 Feb 2020 21:44:13 +0000
parents
children ab4021fb1c66
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
611
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 Here are the expected run times for the flash dump2bin operation of dumping the
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 entire flash content of a Calypso GSM device:
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 Dump of 4 MiB flash (e.g., Openmoko GTA01/02 or Mot C139/140) at 115200 baud:
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 12m53s
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 The same 4 MiB flash dump at 812500 baud: 1m50s
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 Dump of 8 MiB flash (e.g., Mot C155/156) at 812500 baud: 3m40s
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 Because of the architecture of fc-loadtool and its loadagent back-end, the run
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 time of a flash dump operation depends only on the serial baud rate and the
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 size of the flash area to be dumped; it should not depend on the USB-serial
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 adapter type or any host system properties, as long as the host system and
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 serial adapter combination supports the desired baud rate. In contrast, flash
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 programming and fc-xram loading operations are quite different in that their
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 run times do depend on the host system and USB-serial adapter or other serial
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 port hardware - this host system dependency exists because of the way these
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 operations are implemented in our architecture.
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20
c847d742ab38 doc/Loadtools-performance: article started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 [To be continued]