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Date: Wed, 1 Nov 2017 00:43:38 -0700
From: Sean Greenslade <sean@seangreenslade.com>
To: Dave <davestechshop@gmail.com>
Cc: Linux fs Btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: defragmenting best practice?
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On Tue, Oct 31, 2017 at 05:47:54PM -0400, Dave wrote:
> I'm following up on all the suggestions regarding Firefox performance
> on BTRFS. 
>
> <SNIP>
>
> 5. Firefox profile sync has not worked well for us in the past, so we
> don't use it.
> 6. Our machines generally have plenty of RAM so we could put the
> Firefox cache (and maybe profile) into RAM using a technique such as
> https://wiki.archlinux.org/index.php/Firefox/Profile_on_RAM. However,
> profile persistence is important.

> 4. Put the Firefox cache in RAM
> 
> 5. If needed, consider putting the Firefox profile in RAM

Have you looked into profile-sync-daemon?

https://wiki.archlinux.org/index.php/profile-sync-daemon

It basically does the "keep the profile in RAM but also sync it to HDD"
for you. I've used it for years, it works quite well.

--Sean