Date: Thu, 18 Nov 2010 11:13:57 -0800 From: Freddie Cash <fjwcash@gmail.com> To: Alexander Best <arundel@freebsd.org> Cc: FreeBSD Stable <freebsd-stable@freebsd.org>, Andriy Gapon <avg@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org>, "Matthew D. Fuller" <fullermd@over-yonder.net>, freebsd-performance@freebsd.org, "O. Hartmann" <ohartman@zedat.fu-berlin.de> Subject: Re: TTY task group scheduling Message-ID: <AANLkTi=TrKX5gL6eZt%2BAi-Ee1zZo15%2Ba53F01K4_CBA_@mail.gmail.com> In-Reply-To: <20101118185635.GA43706@freebsd.org> References: <AANLkTinHSX1%2Bs3hrHyDeU2Vfp6zekTe04XkHhTc2jtLv@mail.gmail.com> <4CE50849.106@zedat.fu-berlin.de> <4CE52177.3020306@freebsd.org> <20101118182324.GA36312@freebsd.org> <20101118182852.GR63683@over-yonder.net> <20101118185635.GA43706@freebsd.org>
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On Thu, Nov 18, 2010 at 10:56 AM, Alexander Best <arundel@freebsd.org> wrot= e: > On Thu Nov 18 10, Matthew D. Fuller wrote: >> On Thu, Nov 18, 2010 at 06:23:24PM +0000 I heard the voice of >> Alexander Best, and lo! it spake thus: >> > >> > judging from the videos the changes are having a huge impact imo. >> >> Well, my (admittedly limited, and certainly anecdotal) experience is >> that Linux's interactive response when under heavy load was always >> much worse than FreeBSD's. =C2=A0So maybe that's just them catching up t= o >> where we already are =C2=A0 ;) > > well...i tried playing back a 1080p vide files while doing > `make -j64 buildkernel` and FreeBSD's interactivity seems far from perfec= t. > > it might be possible that linux'es interactivity was worse than freebsd's= , > but still this patch should be evaluated for freebsd. in this particular = case > it seems linux now does better than freebsd. Maybe I'm just a lowly user and don't fully understand the issue, but isn't this the whole reason for having /usr/bin/nice installed? As in, if you don't want your make job to hog resources, then use nice to run it in the background. How does the work on the geom_sched (for I/O scheduling) play into this? Am I missing something fundamental to the issue in question? Also, does this really need to be cross-posted to -current, -hackers, and -performance? --=20 Freddie Cash fjwcash@gmail.com
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