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List:       opensuse-factory
Subject:    Re: [opensuse-factory] The plan to speed up openSUSE 11.2
From:       Rastislav_Krupanský <rastislav.krupansky () gmail ! com>
Date:       2009-06-07 11:05:29
Message-ID: f5d8bd3c0906070405u5e0a62fdqc758208eeeabb658 () mail ! gmail ! com
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2009/6/7 Martin <martin.schlander@gmail.com>:
> Lørdag den 6. juni 2009 17:34:08 skrev Rastislav Krupanský:
>> 2009/6/5 Stephan Kulow <coolo@novell.com>:
>> >> >I'm not sure, but it might already add to the puzzle why ubuntu is
>> >> > faster for you. They don't have beagle and they use relatime by
>> >> > default.
>>
>> I used relatime as is in the ubuntu's fstab and times are almost
>> comparable. For Gimp it saved 5-6 seconds and also another apps start
>> up faster ;-) Finally.
>> It seems that relatime could fix it.
>> So, what's next?
>
> I did some highly unscientific measurements with default fstab options, then
> adding noatime and then realtime. Like this:
>
> /dev/disk/by-id/ata-FUJITSU_MHV2080BH_NW78T652BFEN-part2 /
> ext3       acl,user_xattr        1 1
>
> /dev/disk/by-id/ata-FUJITSU_MHV2080BH_NW78T652BFEN-part2 /
> ext3       noatime,acl,user_xattr        1 1
>
> /dev/disk/by-id/ata-FUJITSU_MHV2080BH_NW78T652BFEN-part2 /
> ext3       realtime,acl,user_xattr        1 1
>
> For me (fresh user on 11.1/kde4.3beta) there's no real difference with any of
> these fstab options.
>
> Cold start FF (3.0.10): 8-9s
> Warm start FF: 1-2s
>
> Cold start Gimp (2.6.2): 12s
> Warm start Gimp: 5-6s
>
>
> On Mandriva 2009.0:
>
> Fstab looks like this:
> UUID=7c2d957c-d69d-11dd-b9ef-c5218aa42eda / ext3 noatime 1 1
>
> Cold start FF (3.0.5): 4s
> Warm start FF: 1s
>
> Cold start Gimp (2.4.7): 9s
> Warm start Gimp: 3s
>
> What is the full fstab entry that you use to achieve those results with
> realtime?

Watch out. No realtime, but relatime. But i'm talking about ext4. I
don't know whether relatime has any
influence on ext3. But try it. For ext3 try to add noatime and disable barriers.

/dev/disk/by-id/ata-HTS424040M9AT00_MPA248Q2JL49AE-part1 / ext3
acl,user_xattr,noatime,barrier=0 1 1

have a look on this article
http://vavai.net/2009/01/15/opensuse-tweak-increase-opensuse-speed-performance/
and especially comment by Cristian Rodriguez

Here you are my times. Everything are cold starts.

relatime

user@linux-pws2:~> time firefox %u
real    0m7.497s
user    0m1.148s
sys     0m1.200s

user@linux-pws2:~> time gimp
real    0m16.019s
user    0m3.468s
sys     0m4.464s

user@linux-pws2:~> time oowriter %U
real    0m14.811s
user    0m0.560s
sys     0m3.072s

user@linux-pws2:~> time gnome-control-center
real    0m3.119s
user    0m0.532s
sys     0m0.700s

noatime

user@linux-pws2:~/Desktop> time firefox %u
real    0m8.071s
user    0m1.252s
sys     0m0.956s

user@linux-pws2:~/Desktop> time gimp
real    0m19.466s
user    0m3.880s
sys     0m5.184s

user@linux-pws2:~/Desktop> time oowriter %U
real    0m27.235s
user    0m0.756s
sys     0m3.156s

user@linux-pws2:~/Desktop> time gnome-control-center
real    0m2.972s
user    0m0.528s
sys     0m0.464s

Ubuntu

user@user-desktop:~$ time firefox %u
real    0m7.045s
user    0m0.728s
sys     0m1.016s

user@user-desktop:~$ time gimp
real    0m12.354s
user    0m2.520s
sys     0m3.532s

user@user-desktop:~$ time ooffice -writer %F
real    0m13.336s
user    0m0.092s
sys     0m0.892s

user@user-desktop:~$ time gnome-control-center
real    0m3.023s
user    0m0.776s
sys     0m0.504s


-- 
S pozdravom / Best regards,

Rasto
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