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Decrease OTA package verification times further.

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am: dd895d0

* commit 'dd895d0adaa691a078f18a95a7f5ac0eaf776cae':
  Decrease OTA package verification times further.

Change-Id: If3bee4cbe66e576193556472776a232c9460af9a
This commit is contained in:
Elliott Hughes
2016-04-20 15:21:34 +00:00
committed by android-build-merger
parent 0231e7016d dd895d0ada
commit 1864feb8d2
1 changed files with 4 additions and 4 deletions
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verifier.cpp
+4 -4
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@@ -207,10 +207,10 @@ int verify_file(unsigned char* addr, size_t length,
double frac = -1.0;
size_t so_far = 0;
while (so_far < signed_len) {
// On a Nexus 9, experiment didn't show any performance improvement with
// larger sizes past 1MiB, and they reduce the granularity of the progress
// bar. http://b/28135231.
size_t size = std::min(signed_len - so_far, 1 * MiB);
// On a Nexus 5X, experiment showed 16MiB beat 1MiB by 6% faster for a
// 1196MiB full OTA and 60% for an 89MiB incremental OTA.
// http://b/28135231.
size_t size = std::min(signed_len - so_far, 16 * MiB);
if (need_sha1) SHA1_Update(&sha1_ctx, addr + so_far, size);
if (need_sha256) SHA256_Update(&sha256_ctx, addr + so_far, size);