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Message-ID: <CAKHv7pg19sGtJ0Kz0QkecfNSRECSx0TCDekS2WkK1vPc_EmZ-A@mail.gmail.com>
Date: Mon, 23 Sep 2013 16:52:23 +0200
From: Paul Schutte <sjpschutte@...il.com>
To: sabotage@...ts.openwall.com
Subject: Re: Installing everything in opt
Thanks.
Basically I was just looking for the info that you just gave me.
(Got a bit carried away in trying to motivate my request, but I stand by
it.)
Regards
Paul
On Mon, Sep 23, 2013 at 4:36 PM, John Spencer <maillist-musl@...fooze.de>wrote:
> 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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