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authorElliott Hughes <enh@google.com>2016-04-20 00:24:38 +0200
committerElliott Hughes <enh@google.com>2016-04-20 00:24:38 +0200
commitdd895d0adaa691a078f18a95a7f5ac0eaf776cae (patch)
treebb3c5e356f05da06dea3b3fb9430650e1b3d1945 /verifier.cpp
parentMerge "Update the system update animation." into nyc-dev (diff)
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Diffstat (limited to '')
-rw-r--r--verifier.cpp8
1 files changed, 4 insertions, 4 deletions
diff --git a/verifier.cpp b/verifier.cpp
index 4004b0228..f5299b4a2 100644
--- a/verifier.cpp
+++ b/verifier.cpp
@@ -206,10 +206,10 @@ 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);