| 030d7007ade0abd74a9d6fc0ff079ccf35066630 |
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07-Jul-2016 |
Jeff Sharkey <jsharkey@android.com> |
resolve merge conflicts of d254ce4 to master
Change-Id: Ia8dff82cb7648b568006d10bc99e2dd40a2d6e8e
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| f09a89a7d642699044802e6957b88073240674d2 |
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27-Jun-2016 |
Jeff Sharkey <jsharkey@android.com> |
Fix copy/paste error in benchmark code.
This had minimal impact on the results, since 95% of the writes were
performed through pwrite(), but it's important to fix this for future
benchmark suites.
Bug: 29759783
Change-Id: Ic628aab98b9f9def78508cc722899afdefed84ae
/system/vold/bench/benchgen.py
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| 605d7ae18d6e33b5dc1f6bb813ae32781498a4cd |
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29-Feb-2016 |
George Burgess IV <gbiv@google.com> |
Cleanup uses of sprintf, add modes to open() with O_CREAT.
Change-Id: Iaed2538831b19ada26005bbef33cff28209c6512
/system/vold/bench/benchgen.py
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| 170d8dae2793c7d397d1145255993b561bb30f05 |
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25-Feb-2016 |
George Burgess IV <gbiv@google.com> |
Add mode flags to open calls with O_CREAT.
Change-Id: Ib9fb61155d15ed9eb54942959af965df2fe21b71
/system/vold/bench/benchgen.py
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| 7e128fbe212c64492afa98bfd6d7fab6f1956831 |
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05-Dec-2015 |
Elliott Hughes <enh@google.com> |
Track rename from base/ to android-base/.
Change-Id: I3096cfa50afa395d8e9a8043ab69c1e390f86ccb
/system/vold/bench/benchgen.py
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| d46687ee5da7c9847c6188241ccc699d3a0826c2 |
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29-Jul-2015 |
Jeff Sharkey <jsharkey@android.com> |
Use random data for benchmark instead of zeros.
If we always write zeros, we're leaving a giant pile of known
plaintext at an almost deterministic location on newly formatted
volumes. To avoid this, repeat a 64K chunk of random data.
Bug: 22816936
Change-Id: Iedc067a519bd676a93b9d74ea4f9f77c84c8461c
/system/vold/bench/benchgen.py
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| 4e378be81e7775a7084983cb5dcc69189f7e1b11 |
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29-May-2015 |
Elliott Hughes <enh@google.com> |
Don't use TEMP_FAILURE_RETRY on close in vold.
Bug: http://b/20501816
Change-Id: Ia0a3899947582b8dd0e8e185c203d1ad7dad572e
/system/vold/bench/benchgen.py
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| 5a6bfca1638760b87cf64c5ffb48ff3557cc0563 |
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15-May-2015 |
Jeff Sharkey <jsharkey@android.com> |
Initial pass at storage benchmarks.
Now that we're offering to store private app data on adopted storage
devices, the performance of those devices is much more important to
overall user experience.
To help set user expectations, this change offers to execute a
real-world benchmark on a storage device, returning a metric that can
be used to compare internal and external storage. The benchmark is
generated from the strace-instrumented storage access patterns of
typical apps.
A typical device completes the benchmark in under two seconds on
internal storage, a UHS-3 SD card is even faster (!), but a very slow
Class 4 SD card takes about 30 seconds to complete, giving us a clear
signal.
The measured benchmark numbers are logged along with information
about the storage device, such as manufacturer, model, etc. Card
serial numbers are scrubbed from output.
Bug: 21172095
Change-Id: I9b2713dafdfdfcf5d97bf1bc21841f39409a7e54
/system/vold/bench/benchgen.py
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