Date: Sat, 3 Jul 2021 16:30:52 +0100 From: RW via freebsd-hackers <freebsd-hackers@freebsd.org> To: freebsd-hackers@freebsd.org Subject: Re: firefox is slow and uses a lot of memory Message-ID: <20210703163052.64d72443@gumby.homeunix.com> In-Reply-To: <20210703080336.7a01c22d@ernst.home> References: <37fe2be4-a142-c49e-e1b0-0e9a8fd07a74@freebsd.org> <202107022003.162K34kg050615@critter.freebsd.dk> <20210703080336.7a01c22d@ernst.home>
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On Sat, 3 Jul 2021 10:03:36 +0200 Gary Jennejohn wrote: > On Fri, 02 Jul 2021 20:03:04 +0000 > "Poul-Henning Kamp" <phk@phk.freebsd.dk> wrote: > > > -------- > > Craig Leres writes: > > > Starting with firefox 89 or so, I've found it starts using a LOT > > > of memory and actually makes the system sluggish and causes > > > momentary X freezes. I have 32G of ram/swap, is it reasonable for > > > firefox to use 15G? > > > > I noticed recently that firefox had started DNS's all bookmarks > > rather aggressively I found something under about:config which made > > it stop, (sorry cant remember which setting) but that made it at > > lot more workable for me. > > > > Another possibility would be to enter about:networking#dns. A button > "Clear DNS Cache" will appear. Click on that and check whether that > reduces the amount of memory being used by firefox. There's something deeply wrong if prefetching DNS like that causes high memory use.
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