Capture metrics for failed resource reclaim
Bug: 323238132
Test: atest android.media.misc.cts.ResourceManagerTest
atest android.media.misc.cts.ResourceManagerMultiTest
/data/nativetest64/ResourceManagerService_test/ResourceManagerService_test
/data/nativetest64/ResourceObserverService_test/ResourceObserverService_test
Change-Id: I76641c9f61186af8f8ae32811d3d2a9d99edb38f
diff --git a/services/mediaresourcemanager/ResourceManagerMetrics.cpp b/services/mediaresourcemanager/ResourceManagerMetrics.cpp
index d24a3c9..cd00937 100644
--- a/services/mediaresourcemanager/ResourceManagerMetrics.cpp
+++ b/services/mediaresourcemanager/ResourceManagerMetrics.cpp
@@ -447,6 +447,42 @@
#endif
}
+inline void pushReclaimStats(int32_t callingPid,
+ int32_t requesterUid,
+ int requesterPriority,
+ const std::string& clientName,
+ int32_t noOfConcurrentCodecs,
+ int32_t reclaimStatus,
+ int32_t noOfCodecsReclaimed = 0,
+ int32_t targetIndex = -1,
+ int32_t targetClientPid = -1,
+ int32_t targetClientUid = -1,
+ int32_t targetPriority = -1) {
+ // Post the pushed atom
+ int result = stats_write(
+ MEDIA_CODEC_RECLAIM_REQUEST_COMPLETED,
+ requesterUid,
+ requesterPriority,
+ clientName.c_str(),
+ noOfConcurrentCodecs,
+ reclaimStatus,
+ noOfCodecsReclaimed,
+ targetIndex,
+ targetClientUid,
+ targetPriority);
+ ALOGI("%s: Pushed MEDIA_CODEC_RECLAIM_REQUEST_COMPLETED atom: "
+ "Requester[pid(%d): uid(%d): priority(%d)] "
+ "Codec: [%s] "
+ "No of concurrent codecs: %d "
+ "Reclaim Status: %d "
+ "No of codecs reclaimed: %d "
+ "Target[%d][pid(%d): uid(%d): priority(%d)] result: %d",
+ __func__, callingPid, requesterUid, requesterPriority,
+ clientName.c_str(), noOfConcurrentCodecs,
+ reclaimStatus, noOfCodecsReclaimed,
+ targetIndex, targetClientPid, targetClientUid, targetPriority, result);
+}
+
void ResourceManagerMetrics::pushReclaimAtom(const ClientInfoParcel& clientInfo,
const std::vector<int>& priorities,
const std::vector<ClientInfo>& targetClients,
@@ -485,33 +521,34 @@
MEDIA_CODEC_RECLAIM_REQUEST_COMPLETED__RECLAIM_STATUS__RECLAIM_FAILED_RECLAIM_RESOURCES;
}
}
+
+ if (targetClients.empty()) {
+ // Push the reclaim atom to stats.
+ pushReclaimStats(callingPid,
+ requesterUid,
+ requesterPriority,
+ clientName,
+ noOfConcurrentCodecs,
+ reclaimStatus);
+ return;
+ }
+
int32_t noOfCodecsReclaimed = targetClients.size();
int32_t targetIndex = 1;
for (const ClientInfo& targetClient : targetClients) {
int targetPriority = priorities[targetIndex];
- // Post the pushed atom
- int result = stats_write(
- MEDIA_CODEC_RECLAIM_REQUEST_COMPLETED,
- requesterUid,
- requesterPriority,
- clientName.c_str(),
- noOfConcurrentCodecs,
- reclaimStatus,
- noOfCodecsReclaimed,
- targetIndex,
- targetClient.mUid,
- targetPriority);
- ALOGI("%s: Pushed MEDIA_CODEC_RECLAIM_REQUEST_COMPLETED atom: "
- "Requester[pid(%d): uid(%d): priority(%d)] "
- "Codec: [%s] "
- "No of concurrent codecs: %d "
- "Reclaim Status: %d "
- "No of codecs reclaimed: %d "
- "Target[%d][pid(%d): uid(%d): priority(%d)] result: %d",
- __func__, callingPid, requesterUid, requesterPriority,
- clientName.c_str(), noOfConcurrentCodecs,
- reclaimStatus, noOfCodecsReclaimed,
- targetIndex, targetClient.mPid, targetClient.mUid, targetPriority, result);
+ // Push the reclaim atom to stats.
+ pushReclaimStats(callingPid,
+ requesterUid,
+ requesterPriority,
+ clientName,
+ noOfConcurrentCodecs,
+ reclaimStatus,
+ noOfCodecsReclaimed,
+ targetIndex,
+ targetClient.mPid,
+ targetClient.mUid,
+ targetPriority);
targetIndex++;
}
}
diff --git a/services/mediaresourcemanager/ResourceManagerMetrics.h b/services/mediaresourcemanager/ResourceManagerMetrics.h
index a9bc34b..7a5a89f 100644
--- a/services/mediaresourcemanager/ResourceManagerMetrics.h
+++ b/services/mediaresourcemanager/ResourceManagerMetrics.h
@@ -96,7 +96,32 @@
};
//
-// ResourceManagerMetrics class that maintaines concurrent codec count based:
+// Resource Manager Metrics is designed to answer some of the questions like:
+// - What apps are causing reclaim and what apps are targeted (reclaimed from) in the process?
+// - which apps use the most codecs and the most codec memory?
+// - What is the % of total successful reclaims?
+//
+// Though, it's not in the context of this class, metrics should also answer:
+// - what % of codec errors are due to codec being reclaimed?
+// - What % of successful codec creation(start) requires codec reclaims?
+// - How often codec start fails even after successful reclaim?
+//
+// The metrics are collected to analyze and understand the codec resource usage
+// and use that information to help with:
+// - minimize the no of reclaims
+// - reduce the codec start delays by minimizing no of times we try to reclaim
+// - minimize the reclaim errors in codec records
+//
+// Success metrics for Resource Manager Service could be defined as:
+// - increase in sucecssful codec creation for the foreground apps
+// - reduce the number of reclaims for codecs
+// - reduce the time to create codec
+//
+// We would like to use this data to come up with a better resource management that would:
+// - increase the successful codec creation (for all kind of apps)
+// - decrease the codec errors due to resources
+//
+// This class that maintains concurrent codec counts based on:
//
// 1. # of concurrent active codecs (initialized, but aren't released yet) of given
// implementation (by codec name) across the system.
@@ -111,7 +136,7 @@
// This should help with understanding the (video) memory usage per
// application.
//
-//
+
class ResourceManagerMetrics {
public:
ResourceManagerMetrics(const sp<ProcessInfoInterface>& processInfo);
diff --git a/services/mediaresourcemanager/ResourceManagerService.cpp b/services/mediaresourcemanager/ResourceManagerService.cpp
index 305f6fe..d37d893 100644
--- a/services/mediaresourcemanager/ResourceManagerService.cpp
+++ b/services/mediaresourcemanager/ResourceManagerService.cpp
@@ -586,18 +586,21 @@
// Check if there are any resources to be reclaimed before processing.
if (resources.empty()) {
+ // Invalid reclaim request. So no need to log.
return Status::ok();
}
std::vector<ClientInfo> targetClients;
- if (!getTargetClients(clientInfo, resources, targetClients)) {
- // Nothing to reclaim from.
+ if (getTargetClients(clientInfo, resources, targetClients)) {
+ // Reclaim all the target clients.
+ *_aidl_return = reclaimUnconditionallyFrom(targetClients);
+ } else {
+ // No clients to reclaim from.
ALOGI("%s: There aren't any clients to reclaim from", __func__);
- return Status::ok();
+ // We need to log this failed reclaim as "no clients to reclaim from".
+ targetClients.clear();
}
- *_aidl_return = reclaimUnconditionallyFrom(targetClients);
-
// Log Reclaim Pushed Atom to statsd
pushReclaimAtom(clientInfo, targetClients, *_aidl_return);