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few questions regarding OS
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few questions regarding OS

 sam-maximum sam-maximum Member
edited April 2013 in General

most common question centos vs debian || centos 32 vs 64 ||------>which one consume less CPU
what recommendation is there for a single core processor when cpu load easily touch 1 and above?

Comments

  • mikhomikho Member, Host Rep

    If your cpu load touches 1 and above its not about the OS. You need to trim/optimize your applications or (if already optimized) get something with more resources.

    Asking about what OS is better is like asking: what is better, which marmelade is better, orange or strawberry?

  • You're likely to reach a lower memory footprint with Debian than with CentOS with less 'tweaking'

  • Centos and Debian are both good OS. It depends on which one you are used to and what are you going to use it for. i.e for a system that has RAM under 256MB Debian is the reasonable choice.

  • As explained by @vRozenSch00n totally depends on your comfort zone and the kind of applications you would like to use. If you dont have such dependency start with debian 6 / ubuntu 12.04

  • vRozenSch00nvRozenSch00n Member
    edited April 2013

    @peppr yes debian 6 / ubuntu 12.04 I think are best choices.

  • i use these few things nginx/php-fpm/mysql/ftp/ssh

  • @rajin90 what os are you using right now..

  •  sam-maximum sam-maximum Member
    edited April 2013

    centos 5 : cpu cores 4 intel xeon x3430

  • I personally not really found of CentOS as packages are too old, but I still have 3 tiny (the biggest one has 64M RAM) server running CentOS/Scientific Linux 6 and they are running very well.

    For most time, I prefer Ubuntu 12.04 first, then Debian 6, you can optimize it down to less than 10m RAM usage without many tricks, for fresh system of course, and apt-get just uses less memory than yum.

    As for the high load, you should check your applications first to seek for the reason, if you are on a clean server and it reaches high, contact the provider to see if there's anything wrong (most likely, yes) with the host node.

  • @MikHo said: which marmelade is better, orange or strawberry?

    strawberry, ofc.

  • In Centos, Mr. Yum is to be blamed for taking too much memory when we update the system.

  • @vRozenSch00n said: Mr. Yum is to be blamed

    yum can be tamed to run even in a 64MB VPS. I remember running in ipxcore 50 cent vps

  • netomxnetomx Moderator, Veteran

    Lol deadpool

  • Yum has no issues with low memory if you are not dealing with OpenVZ.

  • bnmklbnmkl Member
    edited April 2013

    @dmmcintyre3 ... Yum has no issues with low memory if you are not dealing with OpenVZ.

    That may make a good article for your blogs @MikHo & @Raymii. A very detailed comparison between OpenVZ and KVM ? Linked to on the LET wiki.

    EDIT : s/may/would/

  • @dmmcintyre3 exactly, we can always use the swap :)

  • @bnmkl said: Hat may make a good article for your blogs @MikHo & @Raymii. A very detailed comparison between OpenVZ and KVM ? Linked to on the LET wiki.

    Well, not really IMHO, OpenVZ/Xen PV is paravirtualization, more like isolation only running the same linux kernel, and KVM/Xen HVM is just like VMware or Virtualbox or real hardware, all isolated, with your own kernel, windows, BSD etc. That OpenVZ/PV uses less memory is because it doesn't run its own kernel and related stuff. It's more like a chroot on steroids.

  • mikhomikho Member, Host Rep

    @bnmkl said: A very detailed comparison between OpenVZ and KVM ? Linked to on the LET wiki.

    Its not detailed perhaps but I think I did get the main difference?
    http://t.co/DuT89MsKnV

  • tuxtux Member

    @Raymii said: Well, not really IMHO, OpenVZ/Xen PV is paravirtualization, more like isolation only running the same linux kernel, and KVM/Xen HVM is just like VMware or Virtualbox or real hardware, all isolated, with your own kernel, windows, BSD etc.

    You can run own linux kernel in XEN PV.

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