diff --git a/logd/LogStatistics.cpp b/logd/LogStatistics.cpp
index 0b6b28c..594bd0d 100644
--- a/logd/LogStatistics.cpp
+++ b/logd/LogStatistics.cpp
@@ -32,6 +32,7 @@
 static const uint64_t monthSec = 31 * 24 * hourSec;
 
 size_t LogStatistics::SizesTotal;
+size_t TagNameEntry::droppedElsewhere;
 
 LogStatistics::LogStatistics() : enable(false) {
     log_time now(CLOCK_REALTIME);
@@ -152,6 +153,8 @@
             tagTable.add(tag, element);
         }
     }
+
+    tagNameTable.add(TagNameEntry(element).getKey(), element);
 }
 
 void LogStatistics::subtract(LogBufferElement* element) {
@@ -191,6 +194,8 @@
             tagTable.subtract(tag, element);
         }
     }
+
+    tagNameTable.subtract(TagNameEntry(element).getKey(), element);
 }
 
 // Atomically set an entry to drop
@@ -225,6 +230,8 @@
             tagTable.drop(tag, element);
         }
     }
+
+    tagNameTable.drop(TagNameEntry(element).getKey(), element);
 }
 
 // caller must own and free character string
@@ -505,6 +512,71 @@
     return formatLine(name, size, pruned);
 }
 
+std::string TagNameEntry::formatHeader(const std::string& name,
+                                       log_id_t /* id */) const {
+    return formatLine(name, std::string("Size"), std::string("Prune")) +
+           formatLine(std::string("  TID/PID/UID   LOG_TAG NAME"),
+                      std::string("BYTES"), std::string("NUM"));
+}
+
+std::string TagNameEntry::format(const LogStatistics& /* stat */,
+                                 log_id_t /* id */) const {
+    std::string name;
+    pid_t tid = getTid();
+    pid_t pid = getPid();
+    std::string pidstr;
+    if (pid != (pid_t)-1) {
+        pidstr = android::base::StringPrintf("%u", pid);
+        if ((tid != (pid_t)-1) && (tid != pid)) pidstr = "/" + pidstr;
+    }
+    int len = 9 - pidstr.length();
+    if (len < 0) len = 0;
+    if ((tid == (pid_t)-1) || (tid == pid)) {
+        name = android::base::StringPrintf("%*s", len, "");
+    } else {
+        name = android::base::StringPrintf("%*u", len, tid);
+    }
+    name += pidstr;
+    uid_t uid = getUid();
+    if (uid != (uid_t)-1) {
+        name += android::base::StringPrintf("/%u", uid);
+    }
+
+    std::string size = android::base::StringPrintf("%zu", getSizes());
+
+    const char* nameTmp = getName();
+    if (nameTmp) {
+        size_t lenSpace = std::max(16 - name.length(), (size_t)1);
+        size_t len = EntryBaseConstants::total_len -
+                     EntryBaseConstants::pruned_len - size.length() -
+                     name.length() - lenSpace - 2;
+        size_t lenNameTmp = strlen(nameTmp);
+        while ((len < lenNameTmp) && (lenSpace > 1)) {
+            ++len;
+            --lenSpace;
+        }
+        name += android::base::StringPrintf("%*s", (int)lenSpace, "");
+        if (len < lenNameTmp) {
+            name += "...";
+            nameTmp += lenNameTmp - std::max(len - 3, (size_t)1);
+        }
+        name += nameTmp;
+    }
+
+    std::string pruned = "";
+
+    // Because of TagNameEntry::droppedElsewhere, dropped count can get
+    // modified for "chatty" tags.  Since the size is always zero this
+    // modification is a "can not happen".
+    TagNameEntry& me = const_cast<TagNameEntry&>(*this);
+    size_t dropped = me.getDropped();
+    if (dropped) {
+        pruned = android::base::StringPrintf("%zu", dropped);
+    }
+
+    return formatLine(name, size, pruned);
+}
+
 static std::string formatMsec(uint64_t val) {
     static const unsigned subsecDigits = 3;
     static const uint64_t sec = MS_PER_SEC;
@@ -725,6 +797,13 @@
         output += tidTable.format(*this, uid, pid, name);
     }
 
+    if (enable) {
+        name = "Chattiest TAGs";
+        if (pid) name += android::base::StringPrintf(" for PID %d", pid);
+        name += ":";
+        output += tagNameTable.format(*this, uid, pid, name);
+    }
+
     if (enable && (logMask & (1 << LOG_ID_EVENTS))) {
         name = "Chattiest events log buffer TAGs";
         if (pid) name += android::base::StringPrintf(" for PID %d", pid);
diff --git a/logd/LogStatistics.h b/logd/LogStatistics.h
index e6f01d6..84dbff3 100644
--- a/logd/LogStatistics.h
+++ b/logd/LogStatistics.h
@@ -18,10 +18,14 @@
 #define _LOGD_LOG_STATISTICS_H__
 
 #include <ctype.h>
+#include <inttypes.h>
+#include <stdint.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/types.h>
 
 #include <algorithm>  // std::max
+#include <experimental/string_view>
 #include <memory>
 #include <string>  // std::string
 #include <unordered_map>
@@ -77,7 +81,7 @@
     std::unique_ptr<const TEntry* []> sort(uid_t uid, pid_t pid,
                                            size_t len) const {
         if (!len) {
-            std::unique_ptr<const TEntry* []> sorted(NULL);
+            std::unique_ptr<const TEntry* []> sorted(nullptr);
             return sorted;
         }
 
@@ -318,7 +322,7 @@
         : EntryBaseDropped(element),
           pid(element.pid),
           uid(element.uid),
-          name(element.name ? strdup(element.name) : NULL) {
+          name(element.name ? strdup(element.name) : nullptr) {
     }
     ~PidEntry() {
         free(name);
@@ -340,7 +344,7 @@
     inline void add(pid_t newPid) {
         if (name && !fastcmp<strncmp>(name, "zygote", 6)) {
             free(name);
-            name = NULL;
+            name = nullptr;
         }
         if (!name) {
             name = android::pidToName(newPid);
@@ -388,7 +392,7 @@
           tid(element.tid),
           pid(element.pid),
           uid(element.uid),
-          name(element.name ? strdup(element.name) : NULL) {
+          name(element.name ? strdup(element.name) : nullptr) {
     }
     ~TidEntry() {
         free(name);
@@ -413,7 +417,7 @@
     inline void add(pid_t incomingTid) {
         if (name && !fastcmp<strncmp>(name, "zygote", 6)) {
             free(name);
-            name = NULL;
+            name = nullptr;
         }
         if (!name) {
             name = android::tidToName(incomingTid);
@@ -477,6 +481,141 @@
     std::string format(const LogStatistics& stat, log_id_t id) const;
 };
 
+struct TagNameEntry : public EntryBaseDropped {
+    // We do not care that a dropped entry does, or does not exist, because
+    // the size will always report zero.  But if it does, we need to account
+    // for the ones that transitioned from a known tag to chatty so that we
+    // do not spring a leak on the dropped counts.
+    static size_t droppedElsewhere;
+
+    pid_t tid;
+    pid_t pid;
+    uid_t uid;
+    std::string* alloc;
+    std::experimental::string_view name;  // Saves space if const char*
+
+    explicit TagNameEntry(LogBufferElement* element)
+        : EntryBaseDropped(element),
+          tid(element->getTid()),
+          pid(element->getPid()),
+          uid(element->getUid()),
+          alloc(nullptr) {
+        if (element->isBinary()) {
+            uint32_t tag = element->getTag();
+            if (tag) {
+                const char* cp = android::tagToName(tag);
+                if (cp) {
+                    name = std::experimental::string_view(cp, strlen(cp));
+                    return;
+                }
+            }
+            alloc = new std::string(
+                android::base::StringPrintf("[%" PRIu32 "]", tag));
+            if (!alloc) return;
+            name = std::experimental::string_view(alloc->c_str(), alloc->size());
+            return;
+        }
+        const char* msg = element->getMsg();
+        if (!msg) {
+            name = std::experimental::string_view("chatty", strlen("chatty"));
+            return;
+        }
+        ++msg;
+        unsigned short len = element->getMsgLen();
+        len = (len <= 1) ? 0 : strnlen(msg, len - 1);
+        if (!len) {
+            name = std::experimental::string_view("<NULL>", strlen("<NULL>"));
+            return;
+        }
+        alloc = new std::string(msg, len);
+        if (!alloc) return;
+        name = std::experimental::string_view(alloc->c_str(), alloc->size());
+    }
+
+    explicit TagNameEntry(TagNameEntry&& rval)
+        : tid(rval.tid),
+          pid(rval.pid),
+          uid(rval.uid),
+          alloc(rval.alloc),
+          name(rval.name.data(), rval.name.length()) {
+        rval.alloc = nullptr;
+    }
+
+    explicit TagNameEntry(const TagNameEntry& rval)
+        : tid(rval.tid),
+          pid(rval.pid),
+          uid(rval.uid),
+          alloc(rval.alloc ? new std::string(*rval.alloc) : nullptr),
+          name(alloc ? alloc->data() : rval.name.data(), rval.name.length()) {
+    }
+
+    ~TagNameEntry() {
+        if (alloc) delete alloc;
+    }
+
+    const std::experimental::string_view& getKey() const {
+        return name;
+    }
+    const pid_t& getTid() const {
+        return tid;
+    }
+    const pid_t& getPid() const {
+        return pid;
+    }
+    const uid_t& getUid() const {
+        return uid;
+    }
+    const char* getName() const {
+        return name.data();
+    }
+    size_t getNameAllocLength() const {
+        return alloc ? alloc->length() + 1 : 0;
+    }
+
+    size_t getDropped() {
+        if (__predict_false(name == "chatty")) {  // plug the leak
+            dropped += droppedElsewhere;
+            droppedElsewhere = 0;
+        }
+        return EntryBaseDropped::getDropped();
+    }
+
+    inline void add(LogBufferElement* element) {
+        if (uid != element->getUid()) {
+            uid = -1;
+        }
+        if (pid != element->getPid()) {
+            pid = -1;
+        }
+        if (tid != element->getTid()) {
+            tid = -1;
+        }
+        // Fixup of dropped can be deferred.
+        EntryBaseDropped::add(element);
+    }
+
+    inline bool subtract(LogBufferElement* element) {
+        if (__predict_false(name == "chatty")) {  // plug the leak
+            dropped += droppedElsewhere;
+            droppedElsewhere = 0;
+        }
+        return EntryBaseDropped::subtract(element);
+    }
+
+    inline void drop(LogBufferElement* element) {
+        if (__predict_false(name == "chatty")) {  // plug the leak
+            dropped += droppedElsewhere;
+            droppedElsewhere = 0;
+        } else {
+            ++droppedElsewhere;
+        }
+        return EntryBaseDropped::drop(element);
+    }
+
+    std::string formatHeader(const std::string& name, log_id_t id) const;
+    std::string format(const LogStatistics& stat, log_id_t id) const;
+};
+
 template <typename TEntry>
 class LogFindWorst {
     std::unique_ptr<const TEntry* []> sorted;
@@ -550,9 +689,15 @@
     // security tag list
     tagTable_t securityTagTable;
 
+    // global tag list
+    typedef LogHashtable<std::experimental::string_view, TagNameEntry>
+        tagNameTable_t;
+    tagNameTable_t tagNameTable;
+
     size_t sizeOf() const {
         size_t size = sizeof(*this) + pidTable.sizeOf() + tidTable.sizeOf() +
                       tagTable.sizeOf() + securityTagTable.sizeOf() +
+                      tagNameTable.sizeOf() +
                       (pidTable.size() * sizeof(pidTable_t::iterator)) +
                       (tagTable.size() * sizeof(tagTable_t::iterator));
         for (auto it : pidTable) {
@@ -563,6 +708,7 @@
             const char* name = it.second.getName();
             if (name) size += strlen(name) + 1;
         }
+        for (auto it : tagNameTable) size += it.second.getNameAllocLength();
         log_id_for_each(id) {
             size += uidTable[id].sizeOf();
             size += uidTable[id].size() * sizeof(uidTable_t::iterator);