From ef9700816fd2bd521bab837ccd85e0a596aa3aa8 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicholas.marriott@gmail.com>
Date: Thu, 11 Mar 2021 08:39:41 +0000
Subject: [PATCH] malloc_trim is itself very poor and gets slower and slower as
 the heap becomes more fragmented. Run it only once an hour. GitHub issue
 2551.

---
 grid.c   | 3 ---
 server.c | 4 ++++
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/grid.c b/grid.c
index 1822f2b5..7744587a 100644
--- a/grid.c
+++ b/grid.c
@@ -265,9 +265,6 @@ grid_free_lines(struct grid *gd, u_int py, u_int ny)
 
 	for (yy = py; yy < py + ny; yy++)
 		grid_free_line(gd, yy);
-#ifdef HAVE_MALLOC_TRIM
-	malloc_trim(0);
-#endif
 }
 
 /* Create a new grid. */
diff --git a/server.c b/server.c
index ab8c6574..0b878d9e 100644
--- a/server.c
+++ b/server.c
@@ -159,6 +159,10 @@ server_tidy_event(__unused int fd, __unused short events, __unused void *data)
 
     format_tidy_jobs();
 
+#ifdef HAVE_MALLOC_TRIM
+    malloc_trim(0);
+#endif
+
     log_debug("%s: took %llu milliseconds", __func__, get_timer() - t);
     evtimer_add(&server_ev_tidy, &tv);
 }