Re: firefox resource hog

[ignatios%cs.uni-bonn.de@localhost]

On Mon, Jan 09, 2023 at 09:20:07AM +0100, Benny Siegert wrote:
> On Sun, Jan 8, 2023 at 12:16 PM Riccardo Mottola
> <riccardo.mottola%libero.it@localhost> wrote:
> > I too notice things are slower on NetBSD with Firefox and ArcticFox seems to do better, so the hint that "threads" and "processes" might be an issue is a hint.
> 
> I think this has something to do with the relative slowness of
> synchronization primitives in NetBSD, which in turn has to do with the
> HZ setting in the kernel. For instance (not directly related), every
> time the Go runtime needs to to a short wait -- say, 100 ns -- it ends
> up being a 5-10 ms wait. Because Go and Rust are a lot more
> multi-threaded, they use these primitives a lot more.
> 
> All this to say: if you want faster Firefox, ultimately you need to
> look into making Rust run faster on NetBSD.
> 
> The difference is obvious if you compile lang/rust on NetBSD vs. Linux
> on the same machine.

Hm. with:

ps -sux | grep -i -c firefox

359	ff91esr
409	ff102esr

on NetBSD-9.3_STABLE

same machine (10GB Lenovo W701), same workload
(one element, one zabbix, one zammad, one wikipedia page, one proxmox )

My colleagues tell me that FF105/ FF108 on Linux don't do that
(about 11 or 12 threads).

	-is