Decrease OTA package verification times further. am: dd895d0
am: 1864feb
* commit '1864feb8d2ab6f764d377df28613a973927d85e8':
Decrease OTA package verification times further.
Change-Id: I0e2eb49ed48081f93bc0c42eeb64aef356912260
diff --git a/verifier.cpp b/verifier.cpp
index a2ef946..5239905 100644
--- a/verifier.cpp
+++ b/verifier.cpp
@@ -207,10 +207,10 @@
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);