From a37a8e3b2ace4f13b8832436c9e16089e0ce64f8 Mon Sep 17 00:00:00 2001
From: eXtremeSHOK <extremeshok@users.noreply.github.com>
Date: Wed, 14 Feb 2018 13:27:30 +0200
Subject: [PATCH 1/2] Fix for large Mailboxes to avoid timeouts

** I agree to the code of conduct and the contributory guidelines **

Tested with 80+GB single inbox via imap

``` --nofoldersizes --skipsize --fast ``` file and folder sizes are only used for statistics, which are completely useless. Before the actual data is transfered the message and folder sizes need to be calculated on a 200 000+ message inbox, this will almost never complete.

``` --buffersize 8192000 ``` sets the io buffer to 8mb, the default buffer is 4kbyte, this is speeds up syncs.

```  --skipheader 'X-*' ``` X headers vary wildly from system to system and do not ensure message uniqueness, they are not needed.

```  --split1 3000 --split2 3000 ```    split the requests in several parts on the server, 3000 is the number of messages handled per request.

``` --fastio1 --fastio2 ``` use fastio
---
 data/Dockerfiles/dovecot/imapsync_cron.pl | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/data/Dockerfiles/dovecot/imapsync_cron.pl b/data/Dockerfiles/dovecot/imapsync_cron.pl
index 8afc3b20..c441d7f9 100755
--- a/data/Dockerfiles/dovecot/imapsync_cron.pl
+++ b/data/Dockerfiles/dovecot/imapsync_cron.pl
@@ -74,6 +74,14 @@ while ($row = $sth->fetchrow_arrayref()) {
 	"--timeout1", "10",
 	"--tmpdir", "/tmp",
 	"--subscribeall",
+	"--nofoldersizes",
+	"--skipsize",
+	"--buffersize 8192000",
+	"--skipheader 'X-*",
+	"--split1 3000",
+	"--split2 3000",
+	"--fastio1",
+	"--fastio2",
 	($exclude eq ""	? () : ("--exclude", $exclude)),
 	($subfolder2 eq "" ? () : ('--subfolder2', $subfolder2)),
 	($maxage eq "0" ? () : ('--maxage', $maxage)),

From 8eb05d1450445658a1870f6ff0bc66c82f559e4a Mon Sep 17 00:00:00 2001
From: eXtremeSHOK <extremeshok@users.noreply.github.com>
Date: Wed, 14 Feb 2018 14:02:56 +0200
Subject: [PATCH 2/2] Fix for large Mailboxes to avoid timeouts 2

Missing ' (sorry my editor keeps correcting the '" to " )
---
 data/Dockerfiles/dovecot/imapsync_cron.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/data/Dockerfiles/dovecot/imapsync_cron.pl b/data/Dockerfiles/dovecot/imapsync_cron.pl
index c441d7f9..47f9bbf7 100755
--- a/data/Dockerfiles/dovecot/imapsync_cron.pl
+++ b/data/Dockerfiles/dovecot/imapsync_cron.pl
@@ -77,7 +77,7 @@ while ($row = $sth->fetchrow_arrayref()) {
 	"--nofoldersizes",
 	"--skipsize",
 	"--buffersize 8192000",
-	"--skipheader 'X-*",
+	"--skipheader 'X-*'",
 	"--split1 3000",
 	"--split2 3000",
 	"--fastio1",