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Commit aa58a862 authored by Mark Salyzyn's avatar Mark Salyzyn
Browse files

logd: worst uid record watermark part deux 

(cherry pick from commit 49afe0d0)

Only record watermark if not known, or represents the worst UID
currently under focus. This has resulted in a halving of the average
prune time in the face of heavy spam because we get less processing
spikes.

Bug: 23327476
Bug: 23681639
Bug: 23685592
Change-Id: I19f297042b9fc2c98d902695c1c36df1bf5cd6f6
parent 8bc53c12

logd/LogBuffer.cpp

+5 −1
Original line number Diff line number Diff line
@@ -467,7 +467,11 @@ void LogBuffer::prune(log_id_t id, unsigned long pruneRows, uid_t caller_uid) { 
            // unmerged drop message

            if (dropped) {

                last.add(e);

                if ((e->getUid() == worst)

                        || (mLastWorstUid[id].find(e->getUid())

                            == mLastWorstUid[id].end())) {

                    mLastWorstUid[id][e->getUid()] = it;

                }

                ++it;

                continue;

            }