loading webmail interfaces really slow

[stefanbc]

Hi,

Some accounts have webmail enabled and can be accessed using
https://webmail.my-test-site.com but after login(which is fast) it takes a long time to load horde or roundcube.

Can I speed up the loading time of those interfaces? Maybe buy more ram or CPUs on the VPS? The websites are pretty fast

Here are some times:
accessing the login: https://webmail.my-test-site.ca/ is instant
login successful takes 6-10 seconds
loading hoarde is 12-15 seconds

Note: the secure certificate is not valid, maybe buying a valid one will make it faster


Thank you

 

[cPanelMichael]

Hello,

A signed SSL certificate is not likely to improve the load time. You mentioned this is a VPS. Is your provider able to temporarily increase the CPU/Memory available to your VPS so you can verify if it's why Horde and Roundcube are loading slower than you expect?

Thank you.

 

[stefanbc]

Looks like we need more RAM

top – 10:45:06 up 19:56, 1 user, load average: 0.05, 0.02, 0.00

Tasks: 164 total, 1 running, 163 sleeping, 0 stopped, 0 zombie

Cpu0 : 0.0%us, 0.0%sy, 0.0%ni, 98.0%id, 0.0%wa, 0.0%hi, 0.0%si, 2.0%st

Cpu1 : 0.0%us, 0.0%sy, 0.0%ni, 97.5%id, 0.0%wa, 0.0%hi, 0.0%si, 2.5%st

Mem: 2045172k total, 1990016k used, 55156k free, 43000k buffers

Swap: 1048572k total, 232000k used, 816572k free, 1115744k cached

 

[stefanbc]

So we doubled the RAM but it still takes 12 seconds from when I click Horde or RoundeCube until the interface is loaded. Logout takes 6 seconds.

While I did the test I ran top and the CPUs are mostly 95% idle and RAM is
Mem: 4043496k total, 1759904k used, 2283592k free, 25996k buffers

While it feels faster I don't think RAM or CPU are the problem

Any other ideas?

 

[cPanelMichael]

Hello,

What version of cPanel is installed on your system? Have you considered switching Roundcube to SQLite to see if you notice an improvement with performance?

/usr/local/cpanel/scripts/convert_roundcube_mysql2sqlite

Thank you.

 

[stefanbc]

WHM 11.48.4 (build 4)
I haven't considered switching(not sure I will), currently running on MariaDb 10

 

[cPanelMichael]

I haven't considered switching(not sure I will), currently running on MariaDb 10

You might see an improvement with load times by switching Roundcube to SQLite, as reported in previous threads.

Thank you.

 

[stefanbc]

Not sure it will help.
I have both RoundCube and Horde running and they are both slow. RoundCube seems faster by 2 3 seconds. I think it's something else.

Would changing RoundCube to sqllite break Horde?

 

[cPanelMichael]

Would changing RoundCube to sqllite break Horde?

No, it has no effect on Horde. However, note that Horde uses SQLite in cPanel version 11.50.

Thank you.

 

[stefanbc]

Does this have something to do with the amount of filtering done using whitelist/blacklist lists?
Maybe there is a setting I can reduce the list. Or can I disable something to see if it makes a difference?

Thank you

 

[cPanelMichael]

Filter rules should not decrease the load time for your webmail applications. Typically, it's either a very large inbox, lack of CPU/Memory, or MySQL performance issues that result in webmail applications loading slowly.

Thank you.

 

[stefanbc]

Hi,

The email account I test with has one email in it so I am not sure what it could be. Maybe MySQL because only half of the RAM is used and CPUs are 95% idle most of the time.

I will try to see if MySQL is the problem, any ideas where to start?

 

[cPanelMichael]

I will try to see if MySQL is the problem, any ideas where to start?

There's really no downside to converting Roundcube to SQLite, however you may want to run a MySQL tuner and see if there are any performance suggestions.

Thank you.