Merge "binder: Increase RPC backlog to 50."

1 files changed, 5 insertions, 1 deletions

diff --git a/libs/binder/RpcServer.cpp b/libs/binder/RpcServer.cpp
index 2a87ae4298..555c5ed72c 100644
--- a/libs/binder/RpcServer.cpp
+++ b/libs/binder/RpcServer.cpp
@@ -347,7 +347,11 @@ bool RpcServer::setupSocketServer(const RpcSocketAddress& addr) {
         return false;
     }
 
-    if (0 != TEMP_FAILURE_RETRY(listen(serverFd.get(), 1 /*backlog*/))) {
+    // Right now, we create all threads at once, making accept4 slow. To avoid hanging the client,
+    // the backlog is increased to a large number.
+    // TODO(b/189955605): Once we create threads dynamically & lazily, the backlog can be reduced
+    //  to 1.
+    if (0 != TEMP_FAILURE_RETRY(listen(serverFd.get(), 50 /*backlog*/))) {
         int savedErrno = errno;
         ALOGE("Could not listen socket at %s: %s", addr.toString().c_str(), strerror(savedErrno));
         return false;