Date: Sat, 04 Nov 2017 22:13:51 +0100 From: Jan Beich <jbeich@FreeBSD.org> To: Pete Wright <pete@nomadlogic.org> Cc: freebsd-ports@freebsd.org Subject: Re: FireFox memory usage Message-ID: <o9oh-4ui8-wny@FreeBSD.org> In-Reply-To: <503ed6c2-34da-4342-cd72-87ee8e85f8bb@nomadlogic.org> (Pete Wright's message of "Sat, 4 Nov 2017 08:56:01 -0700") References: <a891f402-c392-4d2f-fc8d-a397c8d0ab72@netfence.it> <ingk-gjgb-wny@FreeBSD.org> <wp39-hiai-wny@FreeBSD.org> <20171104124932.08551078@kalimero.tijl.coosemans.org> <503ed6c2-34da-4342-cd72-87ee8e85f8bb@nomadlogic.org>
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Pete Wright <pete@nomadlogic.org> writes: > On 11/04/2017 04:49, Tijl Coosemans wrote: >> On Wed, 01 Nov 2017 21:10:13 +0100 Jan Beich <jbeich@FreeBSD.org> wrote: >>> Jan Beich <jbeich@FreeBSD.org> writes: >>>> Andrea Venturoli <ml@netfence.it> writes: >>>>> I'm on 10.3/amd64 with firefox-esr 52.3.0. >>>>> >>>>> Since a few days my 4GiB desktop is crawling due to swap usage and >>>>> looking at top, I see FireFox using almost 7GiB of RAM (SIZE column), >>>>> 2.5 of which are "RES". >>>> Check about:memory and Devolper Tools -> Memory for clues. For more >>>> advanced debugging (DMD, Refcount tracing) you'd need a custom build. >>>> >>>> Firefox on FreeBSD is known to consume more memory than on other >>>> platforms because it uses system jemalloc rather than mozjemalloc. >>>> Mozilla doesn't test memory usage without mozjemalloc. However, porting >>>> mozjemalloc has stalled[1] unless someone helps. >>>> >>>> [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1153683 >>> If one is on Firefox 55+ or FreeBSD 12+ while suboptimal compared to >>> mozjemalloc the old jemalloc4 optimizations can be restored by >>> >>> $ MALLOC_CONF="narenas:1,tcache:false" firefox ... >>> >>> https://dxr.mozilla.org/mozilla-esr52/source/memory/build/jemalloc_config.cpp#35 >> This appears to be such a huge improvement that you should really put >> this in the port even if it's still not as good as mozjemalloc. > i can confirm a huge perf improvement by reverting to jemalloc4. would > this patch ensure we use this by default until mozjemalloc for FreeBSD > is sorted out? > > diff --git a/www/firefox/Makefile b/www/firefox/Makefile > index 7da37422ad82..b9a349e5d217 100644 > --- a/www/firefox/Makefile > +++ b/www/firefox/Makefile > @@ -46,7 +46,8 @@ FIREFOX_ICON_SRC= > ${PREFIX}/lib/${MOZILLA}/browser/chrome/icons/default/default4 > MOZ_EXPORT= BINDGEN_CFLAGS="-isystem${LOCALBASE}/include/nspr \ > -isystem${LOCALBASE}/include/pixman-1" # XXX > bug 1341234 > MOZ_OPTIONS= --enable-application=browser \ > - --enable-official-branding > + --enable-official-branding \ > + --enable-jemalloc=4 --enable-jemalloc=4 is gone as of Firefox 55. https://bugzilla.mozilla.org/show_bug.cgi?id=1363992
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