diff options
| author | Unsuk Jung <unsuk@google.com> | 2015-06-08 16:12:40 -0700 |
|---|---|---|
| committer | Unsuk Jung <unsuk@google.com> | 2015-06-08 21:05:22 -0700 |
| commit | f911ed752137662913a5e182d6da2821f790f3f7 (patch) | |
| tree | a9f3b9b967144f6d33e3fbed235991bb10929f74 | |
| parent | 734c2a41f5716cd01c8baf956c5d636124198ccd (diff) | |
| download | source.android.com-f911ed752137662913a5e182d6da2821f790f3f7.tar.gz | |
Docs: Clarify file I/O performance requirements
Clarify that the requirement is applicable to the internal storage,
used to store app private data (typically the data/ partition), and
that the provided number is the minimum number.
Also reduced the limit of the sequential write performance as per
http://android-review.googlesource.com/136980.
Bug: 19448302
Change-Id: I8ac6b3b02e254e2f457f63b52fae6495b0d8b769
| -rw-r--r-- | src/compatibility/5.1/android-5.1-cdd.html | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/compatibility/5.1/android-5.1-cdd.html b/src/compatibility/5.1/android-5.1-cdd.html index da620444..620e660f 100644 --- a/src/compatibility/5.1/android-5.1-cdd.html +++ b/src/compatibility/5.1/android-5.1-cdd.html @@ -3984,17 +3984,17 @@ application after it has been launched MUST take less than 1 second.</li> <h2 id="8_2_file_i_o_access_performance">8.2. File I/O Access Performance</h2> -<p>Device implementations MUST ensure file access performance consistency for read +<p>Device implementations MUST ensure internal storage file access performance consistency for read and write operations. </p> <ul> - <li><strong>Sequential write</strong>. Device implementations MUST ensure a sequential write performance of 10MB/s + <li><strong>Sequential write</strong>. Device implementations MUST ensure a sequential write performance of at least 5MB/s for a 256MB file using 10MB write buffer.</li> - <li><strong>Random write</strong>. Device implementations MUST ensure a random write performance of 0.5MB/s for a + <li><strong>Random write</strong>. Device implementations MUST ensure a random write performance of at least 0.5MB/s for a 256MB file using 4KB write buffer.</li> - <li><strong>Sequential read</strong>. Device implementations MUST ensure a sequential read performance of 15MB/s for + <li><strong>Sequential read</strong>. Device implementations MUST ensure a sequential read performance of at least 15MB/s for a 256MB file using 10MB write buffer.</li> - <li><strong>Random read</strong>. Device implementations MUST ensure a random read performance of 3.5MB/s for a + <li><strong>Random read</strong>. Device implementations MUST ensure a random read performance of at least 3.5MB/s for a 256MB file using 4KB write buffer.</li> </ul> |