In the past december I tried UML to virtualize some mail server on an x86 box.
The performances I obtained was very bad (about 1/10 of the real box in terms of mail/minute, mainly due to tun/tap network); moreover, the guests experienced some random freeze.
From then many bugs have been fixed and perhaps I could get some better performance applying the SKAS patch to the host kernel.
But definitely I don't want to patch a production kernel, at least for official support issues.
And, based on what I see in the download page at sourceforge.net, it seems the UML now is at 0.59 version.
Even if UML had full s390 support, do you really want a production environment based on an 0.x product?


Best regards.
G



Fabrice Vallet wrote:

Thanks,

I don't want to put UML on zSeries but I want to prove that z/VM is the
best choice ...

Again it's difficult for me to prove this because i don't master UML anyway
...

Regards,

Vallet Fabrice
PSA Peugeot Citro�n
Direction des Syst�mes d'Information
Service INSI/ETSO/MVS
Site de Poissy - CTI d'Ach�res
T�l. 01 30 19 21 79 (29)



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