OS Builder/Run on XO hardware/Experiences: Difference between revisions
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Some sample experiences showing the performance of olpc-os-builder on XO hardware. |
Some sample experiences showing the performance of olpc-os-builder on XO hardware. |
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== 2014-06-17, XO-4, 2GB RAM, 4GB SWAP, 500GB USB HDD, 13.2.0 == |
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Our official builds of [[13.2.1]] for XO-1.75 and XO-4, complete, with signing, took 77 minutes each on the OLPC builder. Since then all our 13.2.x builds were completed on the same hardware configuration. |
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Configuration files: |
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* [http://dev.laptop.org/git/projects/olpc-os-builder/tree/examples/olpc-os-13.2.1-xo1.75.ini?h=v7.0 olpc-os-13.2.1-xo1.75.ini] |
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* [http://dev.laptop.org/git/projects/olpc-os-builder/tree/examples/olpc-os-13.2.1-xo4.ini?h=v7.0 olpc-os-13.2.1-xo4.ini] |
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Performance tweaks: |
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* a warm file cache (timing of a subsequent run, not an initial run), |
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== 2013-12-11, XO-4, 1GB RAM, 1GB SWAP, 294GB USB HDD, 13.2.0 == |
== 2013-12-11, XO-4, 1GB RAM, 1GB SWAP, 294GB USB HDD, 13.2.0 == |
Latest revision as of 11:00, 17 September 2016
Some sample experiences showing the performance of olpc-os-builder on XO hardware.
2014-06-17, XO-4, 2GB RAM, 4GB SWAP, 500GB USB HDD, 13.2.0
Our official builds of 13.2.1 for XO-1.75 and XO-4, complete, with signing, took 77 minutes each on the OLPC builder. Since then all our 13.2.x builds were completed on the same hardware configuration.
Configuration files:
* olpc-os-13.2.1-xo1.75.ini * olpc-os-13.2.1-xo4.ini
Performance tweaks:
- a warm file cache (timing of a subsequent run, not an initial run),
2013-12-11, XO-4, 1GB RAM, 1GB SWAP, 294GB USB HDD, 13.2.0
The build took 49 minutes.
Configuration file: http://wiki.laptop.org/go/File:Olpc-os-13.2.0-xo4.ini
Hardware performance measurements:
- internal eMMC, sequential read, 32 MB/s, (operating system),
- USB HDD, sequential read, 28 MB/s, (osbuilder filesystem),
- external SD, sequential read, 9.45 MB/s, (swap),
Performance tweaks:
- make_tree_tarball=0
- a warm file cache (timing of a subsequent run, not an initial run), called with --cache-only flag
2013-07-29, XO-4, 2GB RAM, 4GB SWAP, 500GB USB HDD, 13.2.0
Build took 31 minutes.
# time ./osbuilder.py examples/olpc-os-13.2.0-xo4.ini ... real 30m55.275s user 12m42.790s sys 2m8.370s
Configuration file: http://dev.laptop.org/~quozl/z/1V3fiW.txt
Hardware performance measurements:
- internal eMMC, sequential read, 49 MiB/s, (operating system),
- internal eMMC, filesystem write, 13.7 MiB/s,
- USB HDD, sequential read, 27 MiB/s, (osbuilder filesystem),
- USB HDD, filesystem write, 27 MiB/s,
- external SD, sequential read, 15 MiB/s, (swap),
Performance tweaks:
- versioned_fs=0
- make_tree_tarball=0
- no sugar
- a warm file cache (timing of a subsequent run, not an initial run)
2013-07-30, XO-1.75, 1GB RAM, no SWAP, 500GB USB HDD, 13.2.0
Build took 43 minutes.
# time ./osbuilder.py examples/olpc-os-13.2.0-xo1.75.ini ... real 43m13.025s user 23m44.010s sys 4m17.620s
Configuration file: http://dev.laptop.org/~quozl/z/1V3xjq.txt
Hardware performance measurements:
- internal eMMC, sequential read, 27.8 MiB/s, (operating system),
- internal eMMC, filesystem write, 7.38 MiB/s,
- USB HDD, sequential read, 27.5 MiB/s, (osbuilder filesystem),
- USB HDD, filesystem write, 27 MiB/s,
Performance tweaks:
- versioned_fs=0
- make_tree_tarball=0
- no sugar
- a warm file cache (timing of a subsequent run, not an initial run)
2013-07-30, XO-1.5, 1GB RAM, no SWAP, 500GB USB HDD, 13.2.0
Build took 39 minutes.
# time ./osbuilder.py examples/olpc-os-13.2.0-xo4.ini ... real 38m50.632s user 21m16.550s sys 2m58.560s
Configuration file: http://dev.laptop.org/~quozl/z/1V3vxy.txt
Hardware performance measurements:
- internal microSD, sequential read, 18.2 MiB/s, (operating system),
- internal microSD, filesystem write, 6.23 MiB/s,
- USB HDD, sequential read, 32 MiB/s, (osbuilder filesystem),
- USB HDD, filesystem write, 29.4 MiB/s,
Performance tweaks:
- versioned_fs=0
- make_tree_tarball=0
- no sugar
- a warm file cache (timing of a subsequent run, not an initial run)