On Thursday, 3 May 2018 18:22:01 BST Mick wrote:

> I will give USE="jumbo-build" a spin later to see what improvement I may
> get.


I rebuilt chromium with USE="jumbo-build" with amazing results:

     Fri May  4 12:37:06 2018 >>> www-client/chromium-66.0.3359.139
       merge time: 1 day, 41 minutes and 56 seconds.

     Sat May  5 18:28:05 2018 >>> www-client/chromium-66.0.3359.139
       merge time: 9 hours, 20 minutes and 1 second.


Inevitably the first build took place to a large extent overnight when the PC 
was not in use.  Otherwise during day time the PC saw similar usage, light 
browsing, emails.  The above result shows more than a 60% shorter emerge time!

I noticed slightly more swap was being used (c. 100M or so).

Thanks Neil for suggesting it.  :-)

-- 
Regards,
Mick