Webtop user very slow loading folders

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I have a webtop user that webtop seems to timeout and never shows any folders. It seems to take about 2-3 minutes, at which point you can refresh the browser and the folders are there. If you don’t refresh, they don’t ever show. This happens every first login of the day on every browser, then is fine the rest of the day. This user happens to be the largest use and number of folders. (93 GB of email, and 232 folders). If the user uses roundcube, the folders load instantly.
I have a few other users that this happens to once in a while (user1 - 3.1 GB, 61 folders) (user2 - 23 GB, 64 folders) (user3 - 51 GB, 64 folders).

I see nothing in /var/log/webtop/webtop.log when this happens, but in /var/log/imap I get many of these logout/logins, and it goes on for about the 2-3 minutes, and when they stop the user can refresh their page and the folders will show;

Dec 29 10:23:06 lrtserv-data dovecot: imap(user@mydomain.com): Logged out in=413 out=1814
Dec 29 10:23:08 lrtserv-data dovecot: imap-login: Login: user=user@mydomain.com, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=18440, secured, session=<VDCt95u3crN/AAAB>
Dec 29 10:23:08 lrtserv-data dovecot: imap(user@mydomain.com): Logged out in=532 out=2142
Dec 29 10:23:10 lrtserv-data dovecot: imap-login: Login: user=user@mydomain.com, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=18455, secured, session=<yRPG95u3eLN/AAAB>
Dec 29 10:23:10 lrtserv-data dovecot: imap(user@mydomain.com): Logged out in=228 out=1112

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Hi @wbilger,
in some cases, with many IMAP folders, the problem was solved by adding this properties (with a TC) which increases the IMAP connection pool at session start:

mkdir -p /etc/e-smith/templates-custom/etc/webtop/webtop.properties
echo 'mail.imap.connectionpoolsize = 10'> /etc/e-smith/templates-custom/etc/webtop/webtop.properties/20imap_connectionpoolsize
expand-template /etc/webtop/webtop.properties
signal-event nethserver-webtop5-update

Check if this solution can also work in your case and let me know :wink:

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This works great on initial testing. I tested with the problem user on 4 different browsers on 2 different pc’s and it loads right away (sometimes instant, sometimes 1-2 secs) every time. Thanks!

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