diff --git a/DOCKER.md b/DOCKER.md
index a899cc8b6..245139f76 100644
--- a/DOCKER.md
+++ b/DOCKER.md
@@ -77,8 +77,10 @@ continues to work with these variables blank.
 Native Ubuntu/Debian package installs are managed by `systemd`, not Docker. If
 the package install fails while starting `manticore.service`, especially with
 `Status: "Replaying binlogs..."` and `accept() failed ... Too many open files`,
-use [`docs/manticore-ubuntu-package.md`](docs/manticore-ubuntu-package.md) to
-raise the service file descriptor limit and finish `dpkg` configuration.
+or if `searchd` prints a backtrace during binlog replay, use
+[`docs/manticore-ubuntu-package.md`](docs/manticore-ubuntu-package.md) to raise
+the service file descriptor limit, preserve crash evidence, quarantine bad
+binlogs if needed, and finish `dpkg` configuration.
 
 ## Make Targets
 
diff --git a/config/manticore.conf b/config/manticore.conf
index 2400e42a9..b4028cc01 100644
--- a/config/manticore.conf
+++ b/config/manticore.conf
@@ -96,7 +96,7 @@ searchd
 	# maximum number of files searchd may keep open
 	# package/systemd installs must also set LimitNOFILE at least this high
 	# https://manual.manticoresearch.com/Server_settings/Searchd#max_open_files
-	max_open_files		= 65535
+	max_open_files		= 524288
 
 	# max allowed per-query filter count
 	# optional, default is 256