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Re: [Xen-users] Memory squeeze in netback driver?
| To: | Adam Jacob <adam@xxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] Memory squeeze in netback driver? |
| From: | Jason Dillon <jason@xxxxxxxxxxxx> |
| Date: | Thu, 3 May 2007 15:51:30 -0700 |
| Cc: | Xen Users <xen-users@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Thu, 03 May 2007 15:50:08 -0700 |
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Is there any rule for how much memory dom0_mem should be set to?
I've got 16g in this machine, and run ~12 1g domU's.
Is more memory for dom0_mem better? or is less better? --jason On May 3, 2007, at 8:14 AM, Adam Jacob wrote: On Thu, May 03, 2007 at 03:03:43AM -0700, Jason Dillon wrote:I've been running into this from time to time... usually when xm creating a new domU, /var/log/messages for dom0 spits out: <snip> May 3 02:56:04 tweak kernel: printk: 4 messages suppressed.May 3 02:56:04 tweak kernel: xen_net: Memory squeeze in netback driver.</snip> And at this point all of the network connectivity for *all* domU's controlled for that dom0 vanish. I have to xm shutdown and xm create them again to get the network back. This doesn't happen all of the time, seems rather random really.Its *really* annoying. Is there a way to prevent this from happening?You need to set the dom0_mem parameter at boot time. Something like: kernel /xen-3.0.3-1-amd64.gz dom0_mem=256M Has been working for us. Adam -- HJK Solutions - We Launch Startups - http://www.hjksolutions.com Adam Jacob, Senior Partner T: (206) 508-4759 E: adam@xxxxxxxxxxxxxxxx _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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