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  1. #1

    SolusVM Xen Templates - Pygrub vs Standard?

    I'm working on setting up a set of PowerEdge servers for selling VPS hosting. I've setup my SolusVM Master & Slave, and I'm beginning to setup the templates. I purchased the minimal set from Chris here at WHT, and I had one question for those who are familiar with setting up Xen SolusVM servers:

    Which is the preferred setup: Standard or Pygrub? I haven't been able to identify if one offers an inherent performance/customization boost over the others.

  2. #2
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    Pygrub is better since you can run native 32-bit virtualize OS kernel, non pygrub always shows the host node's kernel when you do #uname -a (which is CentOS XEN Kernel 64-bit) even though you for example use 32-bit CentOS template, this is problematic if you want to install on 32-bit OS template a software like cPanel, also updating main node's kernel will cause version conflicts on DomU's kernel modules.
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  3. #3
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    PyGrub is nice but it has some pretty bad performance issues:

    We've found that PyGrub based templates provide less overall RAM than a standard template (not much, but for a 96MB VPS users have complained of up to 10MB loss when using PyGrub based templates).

    In regards to this thread here, we've determined that a template with PyGrub results in about a 50% network speed loss for no known reason. Our VPS with a 100Mbps port will perform at 40Mbps with PyGrub but at near 80Mbps with a standard template.
    -Joe @ Secure Dragon LLC.
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  4. #4
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    Quote Originally Posted by ZKuJoe View Post
    PyGrub is nice but it has some pretty bad performance issues:

    We've found that PyGrub based templates provide less overall RAM than a standard template (not much, but for a 96MB VPS users have complained of up to 10MB loss when using PyGrub based templates).

    In regards to this thread here, we've determined that a template with PyGrub results in about a 50% network speed loss for no known reason. Our VPS with a 100Mbps port will perform at 40Mbps with PyGrub but at near 80Mbps with a standard template.
    Aren't you using PV drivers?
    Curious, but confused.
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  5. #5
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    Feb 2007
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    I am using Xen PV instead of HVM. Why?
    -Joe @ Secure Dragon LLC.
    + OpenVZ Powered by Wyvern | KVM | cPanel Hosting | Backup VPSs | LowEndBoxes | DDOS Protection
    + Florida | Colorado | Illinois | California | Oregon | Georgia | New Jersey | Arizona | Texas

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