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Message-ID: <524051EA.8000004@barfooze.de>
Date: Mon, 23 Sep 2013 16:36:26 +0200
From: John Spencer <maillist-musl@...fooze.de>
To: sabotage@...ts.openwall.com
CC: Paul Schutte <sjpschutte@...il.com>
Subject: Re: Installing everything in opt
On 09/23/2013 04:04 PM, Paul Schutte wrote:
> Hy Christian,
>
> That is actually one work load that would not be impacted.
> The toolchain will get cached and there after it will be on par with a
> "normal" install.
>
> Workloads that will suffer will be things like launching X-apps with a lot
> of shared libraries (anything written in Qt or gtk).
> Browser startup time, libre office, mplayer (when we get there one day ;-).
>
> It is already comparable to launch into lxde (which is currently minimal)
> and to bootup Ubuntu and auto login on a full stack of applications on my
> machine. It is going to get worse as we add more apps.
>
> Synthetic benchmarks won't show this either as repetitive IO will get
> cached.
> It will be real world experience that will be bad as not so frequently used
> apps will always grind your HDD.
> Every time you click on something, it will be sluggish. You will be driven
> to getting an SSD.
you're painting the devil on the wall.
please provide proper performance measurements instead of doing
hysterical claims.
so far sabotage doesn't seem slow at all, it's quick and responsive even
in qemu.
>
> Using hardlinks in the place of the current symlinks will actually work
> very well. There would only be a small penalty because probability of files
> being in different allocation groups (ext2,ext3,ext4,xfs and possible
> others) are higher than when created "normally".
>
> What would be interesting to me would be to have some sort of shootout
> between a sym-linked and hard-linked system and compare startup times of
> the apps and the general "feel" of the system.
>
> We can probably use something like bootchart and compare them booting into
> X with a desktop and a few apps.
>
>
> How difficult would it be to change it to use hardlinks instead ?
see my last mail sent to the list half an hour ago.
>
> Regards
> Paul
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