On Thu, 2006-11-23 at 18:04 +0100, Leszek Matok wrote: > Dnia 23-11-2006, czw o godzinie 17:30 +0200, Gilboa Davara napisał(a): > > yum is slower by an order of magnitude than apt-get > > > Am I the only one having this problem? > Well, on this machine, yum -C update takes 14-18 seconds and apt-get > dist-upgrade takes 9-11 seconds to resolve everything and ask me if I > want to download. At this point, yum takes 7 MiB of memory (ps's SZ), > while apt-get takes 30 MiB (more precisely, apt-shell takes 6,8 to > resolve dependencies, but 30 when you tell it to commit). I still prefer > apt for lots of other reasons, but nowadays it's not so much faster and > doesn't look lighter at all. > > Lam I'll be the first one to admit that my information is subjective and lacking. But here's a small test [1] I just conducted on my workstation (2Sx2Cx4G machine) which has Debian guest running under vmware-server. (Be aware that the guest is limited to 512MB and uses two VCPUs) Step0: Get all the recent updates for both OS. (yum -C -y update [FC6 host]; apt-get -y update && apt-get -y dist-upgade [Debian guest]) Test1: Measure the time it takes to run a clean update cycle (Read: no downloads required, minimal network interaction). Test2: Measure the time it takes to search one package. (Again from cache) Look at the numbers below: Test1: Network enabled "apt-get update; apt-get -y dist-upgrade" is twice as fast as cache based "yum -C update". Test2: Cache bases "apt-cache search" is >20 times faster then cache based "yum -c search". Again, be aware that the host machine is considerably (?) faster then the guest machine. As I said before, I'm not trying to start a flame war - I trying to raise a point. God knows I won't switch to Debian just because I find yum to be slower and resources intensive. - Gilboa [1] Actual test result. -------------------------------------------------------------------------------------- FC6/x86_64 Host: -------------------------------------------------------------------------------------- [root@gilboa-work-dev gilboa]# time yum -C -y update Loading "installonlyn" plugin Loading "fastestmirror" plugin Loading "fedorakmod" plugin Loading "kernel-module" plugin Loading "skip-broken" plugin Setting up Update Process Setting up repositories Loading mirror speeds from cached hostfile Reading repository metadata in from local files No Packages marked for Update/Obsoletion real 0m6.072s user 0m1.408s sys 0m0.232s [root@gilboa-work-dev gilboa]# yum -C search kdeartwork Loading "installonlyn" plugin Loading "fastestmirror" plugin Loading "fedorakmod" plugin Loading "kernel-module" plugin Loading "skip-broken" plugin Setting up repositories Loading mirror speeds from cached hostfile Reading repository metadata in from local files [SNIP] real 0m12.829s user 0m7.364s sys 0m1.104s -------------------------------------------------------------------------------------- Debian guest: -------------------------------------------------------------------------------------- root@gilboa-vmw-probe ~# time (apt-get update && apt-get -y dist-upgrade) Get:1 http://mirror.hamakor.org.il etch Release.gpg [378B] Hit http://mirror.hamakor.org.il etch Release Hit http://mirror.hamakor.org.il etch/main Packages/DiffIndex Hit http://mirror.hamakor.org.il etch/main Sources/DiffIndex Get:2 http://security.debian.org etch/updates Release.gpg [189B] Hit http://security.debian.org etch/updates Release Ign http://security.debian.org etch/updates/main Packages/DiffIndex Ign http://security.debian.org etch/updates/main Sources/DiffIndex Hit http://security.debian.org etch/updates/main Packages Hit http://security.debian.org etch/updates/main Sources Fetched 2B in 2s (1B/s) Reading package lists... Done Reading package lists... Done Building dependency tree... Done Calculating upgrade... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. real 0m3.078s user 0m0.556s sys 0m0.512s root@gilboa-vmw-probe ~# time apt-cache search kdeartwork kdeartwork - themes, styles and more from the official KDE release kdeartwork-dbg - debugging symbols for kdeartwork kdeartwork-emoticons - emoticon collections for KDE chat clients kdeartwork-misc - various multimedia goodies released with KDE kdeartwork-style - widget styles released with KDE kdeartwork-theme-icon - icon themes released with KDE kdeartwork-theme-window - window decoration themes released with KDE kdewallpapers - wallpapers released with KDE kscreensaver - additional screen savers released with KDE kscreensaver-xsavers - KDE hooks for standard xscreensavers kworldclock - earth watcher for KDE real 0m0.314s user 0m0.292s sys 0m0.020s -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
