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[92.1.116.226]) by smtp.gmail.com with ESMTPSA id c9sm6842321wro.5.2021.07.03.08.30.52 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Jul 2021 08:30:53 -0700 (PDT) Date: Sat, 3 Jul 2021 16:30:52 +0100 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> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; amd64-portbld-freebsd12.2) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4GHGB713hZz3kb6 X-Spamd-Bar: + Authentication-Results: mx1.freebsd.org; dkim=pass header.d=googlemail.com header.s=20161025 header.b=Ufq01sDz; dmarc=pass (policy=quarantine) header.from=googlemail.com; spf=pass (mx1.freebsd.org: domain of rwmaillists@googlemail.com designates 2a00:1450:4864:20::431 as permitted sender) smtp.mailfrom=rwmaillists@googlemail.com X-Spamd-Result: default: False [2.00 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_FROM(0.00)[googlemail.com]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[googlemail.com:+]; DMARC_POLICY_ALLOW(-0.50)[googlemail.com,quarantine]; RECEIVED_SPAMHAUS_PBL(0.00)[92.1.116.226:received]; FROM_EQ_ENVFROM(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[2a00:1450:4864:20::431:from]; FREEMAIL_ENVFROM(0.00)[googlemail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; DWL_DNSWL_NONE(0.00)[googlemail.com:dkim]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[googlemail.com:s=20161025]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(1.00)[1.000]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; NEURAL_SPAM_MEDIUM(1.00)[1.000]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[2a00:1450:4864:20::431:from:127.0.2.255]; MIME_TRACE(0.00)[0:+]; NEURAL_SPAM_LONG(1.00)[1.000]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::431:from]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-hackers] Reply-To: rwmaillists@googlemail.com From: RW via freebsd-hackers X-Original-From: RW X-ThisMailContainsUnwantedMimeParts: N On Sat, 3 Jul 2021 10:03:36 +0200 Gary Jennejohn wrote: > On Fri, 02 Jul 2021 20:03:04 +0000 > "Poul-Henning Kamp" 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.