WifiLogger: speed up compression

Some rough benchmarking suggests that using
BEST_COMPRESSION may cause us to take 4 seconds
to service a dump() request. The same benchmarking
indicates that using BEST_SPEED will be about
10x as fast, and yield output that's only 5%
larger.

Switch to BEST_SPEED, to avoid slowing down
bug report generation.

BUG=28986501
TEST=manual

Manual test:
- Enable Wi-Fi Verbose Logging
$ adb bugreport foo.zip
- verify that foo.zip contains base-64 encoded
  ringbuffer dumps

Change-Id: I0eac83def5cf393a6babdd481079086ea11a5a96
(cherry picked from commit 9a312a13ba34712f3de7f4d0c8d04ff695a41cae)

1 files changed, 1 insertions, 1 deletions

diff --git a/service/java/com/android/server/wifi/WifiLogger.java b/service/java/com/android/server/wifi/WifiLogger.java
index 4251df457..093d86e36 100644
--- a/service/java/com/android/server/wifi/WifiLogger.java
+++ b/service/java/com/android/server/wifi/WifiLogger.java
@@ -536,7 +536,7 @@ class WifiLogger extends BaseWifiLogger {
         String result;
         //compress
         Deflater compressor = new Deflater();
-        compressor.setLevel(Deflater.BEST_COMPRESSION);
+        compressor.setLevel(Deflater.BEST_SPEED);
         compressor.setInput(input);
         compressor.finish();
         ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);