From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Mon, 18 May 2020 17:34:27 +0000 (+0300)
Subject: dict: Cork the output while writing iteration output
X-Git-Tag: 2.3.13~512
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=66610c9f007806e05912a43afed7e58fa8713bdd;p=thirdparty%2Fdovecot%2Fcore.git

dict: Cork the output while writing iteration output

This reduces system CPU usage by avoiding many tiny write() syscalls.

Broken by 2ff2da52146609f4459bd0f7fd603e13400cb85e
---

diff --git a/src/dict/dict-commands.c b/src/dict/dict-commands.c
index 003a15e575..968ff84d6d 100644
--- a/src/dict/dict-commands.c
+++ b/src/dict/dict-commands.c
@@ -308,7 +308,9 @@ static void cmd_iterate_callback(void *context)
 	struct dict_connection *conn = cmd->conn;
 
 	dict_connection_ref(conn);
+	o_stream_cork(conn->conn.output);
 	dict_connection_cmd_output_more(cmd);
+	o_stream_uncork(conn->conn.output);
 	dict_connection_unref_safe(conn);
 }