From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 24 May 2024 10:18:23 +0000 (+0200)
Subject: copy: increase copy buffer from 16K to 64K
X-Git-Tag: v257-rc1~1148^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F33330%2Fhead;p=thirdparty%2Fsystemd.git

copy: increase copy buffer from 16K to 64K

In my tests here this tremendously speeds up things when initializing a
1G file from /dev/urandom
---

diff --git a/src/shared/copy.c b/src/shared/copy.c
index def8bd1933e..ac1a9b5933a 100644
--- a/src/shared/copy.c
+++ b/src/shared/copy.c
@@ -41,8 +41,8 @@
 #include "user-util.h"
 #include "xattr-util.h"
 
-/* If we copy via a userspace buffer, size it to 16K */
-#define COPY_BUFFER_SIZE (16U*1024U)
+/* If we copy via a userspace buffer, size it to 64K */
+#define COPY_BUFFER_SIZE (64U*U64_KB)
 
 /* If a byte progress function is specified during copying, never try to copy more than 1M, so that we can
  * reasonably call the progress function still */