2009/6/7 Rastislav Krupanský :

2009/6/7 Martin :

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Lørdag den 6. juni 2009 17:34:08 skrev Rastislav Krupanský:

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2009/6/5 Stephan Kulow :

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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-performan... 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

So I think this is saying: Currently OpenSUSE uses neither noatime, nor relatime as a default mount option. Using noatime is the fastest option but it has too many cons associated with it. Using relatime is observably faster than not using it, but not as fast as noatime, but it has far fewer cons. Does anyone know what cons using relatime as a default mount option would have? Thanks Greg -- Greg Freemyer Head of EDD Tape Extraction and Processing team Litigation Triage Solutions Specialist http://www.linkedin.com/in/gregfreemyer First 99 Days Litigation White Paper - http://www.norcrossgroup.com/forms/whitepapers/99%20Days%20whitepaper.pdf The Norcross Group The Intersection of Evidence & Technology http://www.norcrossgroup.com -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-factory+help@opensuse.org