Re: Gentoo is slow
From: Dances With Crows (danSPANceswitTRAPhcrows_at_usa.net)
Date: 11/12/03
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Date: 12 Nov 2003 15:34:26 GMT
["Followup-To:" header set to comp.os.linux.portable.] On 12 Nov 2003
08:01:45 GMT, Peter Lemken staggered into the Black Sun and said:
> My main computer is a DELL Inspiron 8200 notebook with 1.9 GHz P4M
> and 384 MB of RAM, while my GF uses a regular desktop computer, an AMD
> with 1 GHz and 512 MB of RAM. Both computers use a GeForce 4 (440 Go
> on the notebook, MX440 on the desktop).
>
> Both run Gentoo 1.4 with regular updates and KDE [but I installed]
> Slackware 9.0 with updates to 9.1 on the AMD - and it is blazingly
> fast, actually a lot faster than the DELL notebook. Startup into KDM
> takes about *half* the time on the seemingly slower desktop
Did you prelink everything? Is the laptop running more services than
the desktop? What USE flags were you using on the laptop? Remember
that a PIV 1900 is not going to be *that* much faster than an Athlon
1000, and could even feel slower for some applications depending on the
speed of the RAM in both machines.
> What is your experience? Is Gentoo really as fast on your machine as
> expected, or were you just as disappointed about its performance as I
> am currently?
Runs fine on both my machines (desktop: AMD XP2000, 1G, TNT2; laptop:
PIII 900, 384M, Rage128), I thought it was perceptibly faster than SuSE
8.0 on both, but then I prelinked everything and set my USE flags
appropriately for everything and all my favorite games are 2D, not 3D.
> Would upgrading the notebook to 768MB make a huge difference
More RAM is always good.
> BTW, performance: Why is IDE so sucky?
Broken As Designed. Spend the extra money for SCSI or deal with it.
> Whatever hdparm settings I use, the machine feels incredibly slow when
> I move data from one to the other partition or do an updatedb. Is
> there any remedy for that?
You do have support for your IDE chipset compiled into your kernel,
right?
If possible, arrange your IDE devices such that each one has its own
channel. If that's not possible, put your fast devices on one channel,
and your slow devices (DVD/CD/removable drive/tape) on another channel.
Use 80-wire cables. Best hdparm settings for interactive performance
are -c1 -d1 -m16 -u1 ; you might gain a tiny bit of performance with -u0
, but interactivity will suffer tremendously. Newer IDE drives are
faster mostly because the data on their platters is denser.
Also remember that laptop drives are built for low power consumption
rather than high performance. They typically spin at 3600-4200 RPM
instead of the 7200 RPM your typical 3.5" drive does, so your laptop
will post low hdparm numbers no matter what you do.
-- Matt G|There is no Darkness in Eternity/But only Light too dim for us to see Brainbench MVP for Linux Admin / mail: TRAP + SPAN don't belong http://www.brainbench.com / "He is a rhythmic movement of the -----------------------------/ penguins, is Tux." --MegaHAL
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