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To: freebsd-ports@freebsd.org
From: Andrea Venturoli <ml@netfence.it>
Subject: Firefox constantly trashing disk
Message-ID: <4ec4e2c1-21ec-e889-3105-304ee9a7e63f@netfence.it>
Date: Fri, 14 Sep 2018 18:13:57 +0200
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Hello.

I think FireFox (ESR) on my system makes really too much disk I/O.
My profile is on an NFS drive, but I hear local disks spinning, so I 
guess it's writing to /tmp or /var/tmp (or another local folder).

Looks like animations are what really make him go mad: just opening 
https://get.webgl.org/ will start heavy disk activity which will only 
stop when that page is closed; however even a simple gallery, where 
images "slide" smoothly, will give a spin any time a button is pressed 
and the image changes.

I'd like to dig into this and understand what it is doing.

Is there a way I can see what file Firefox is writing too?
I tried "lsof|grep firefox", but that will list some 1200-1300 entries 
and I still don't know which is the one.

  bye & Thanks
	av.