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Re: [Xen-users] Does sshd run better on xen linux than on native linux?

  • To: ziyeyang@xxxxxxxxxxxx
  • From: Nico Kadel-Garcia <nkadel@xxxxxxxxx>
  • Date: Mon, 30 Jul 2007 21:30:03 +0100
  • Cc: xen users <xen-users@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Mon, 30 Jul 2007 13:27:34 -0700
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ziyeyang@xxxxxxxxxxxx wrote:
I found a problem about sshd. My native linux:FC2, whose kernel version is 2.6.16;My xen linux: the xen version is 3.0.2,dom0 whose kernel version is also 2.6.16. And the kernel configuration of native linux and xenlinux is similiar. Then I found that sshd(3.6.1p2) ran better on xenlinux(dom0) than on native linux. The connection time of sshd on dom0 is about 20ms less than on native linux. Really? Or I have got a wrong result?
You're sure it's not a reverse DNS issue? SSH is *famous* for its delays when the reverse DNS of the connecting client is not enabled, and then the failure to find it winds up cached for a while.

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