FW: amavis set nice level on ubuntu 18

[webmaster at vbox.com.au]

Thank you Dominic, I have run this command, checked the chane, done a 
reboot to be certain, checked again and it appears to have done the job. 
  Much appreciated. :)

I spent a lot of time on this one, and if you can spare a bit of your 
time give me an insight on how this command works, so I can understand 
more clearly what has been done.

TIA, Greg

> I think this should work (and it writes a backup copy to amavis.bak):

> sed -i.bak 's/daemon \(${START}\)/daemon -N10 \1/' /etc/init.d/amavis

> On 2021-02-09 14:16, webmaster at vbox.com.au wrote:
> Thankyou Dominic.
> 
> Yes I do want to limit amavis, as it does use a bit of memory when
> active.  No need for speed on the mail server side of things as only a
> small number of domains/mail accounts.  Using iRedMail BTW.
> 
> I have already set ClamAV to a suitable nice level using a method like 
> this:
> =>
> https://blog.christosoft.de/2018/07/debian-stretch-cpu-nice-level-of-daemons-like-spamassasin/
> 
> I've created a file in /etc/systemd/system/amavis.service with this 
> directive.
> ++++
> ## Added to recduce the load on other service
> Nice=10
> ++++
> However, this method doesn't work for amavis on Ubuntu 18 as the
> directives are created by "systemd-sysv-generator" as note below.  I
> cannot find where that config file is so I can set the nice level in
> the file it writes desired the nice level to the generated file.
> 
> More ideas welcome, thank you.