Re: [CFT][PATCH] Netfront fixes for FreeBSD-head [and an OT issue]

2011-09-15 Thread Hugo Silva
On 09/15/11 14:01, Justin T. Gibbs wrote:
> On 9/15/11 4:35 AM, Hugo Silva wrote:
>> On 09/15/11 05:43, Janne Snabb wrote:
>>> On Mon, 12 Sep 2011, Justin T. Gibbs wrote:
>>>
 I'm planning to ask RE for permission to merge the following netfront
 fixes (listed below) into 9.0/head.
>> Assuming this is the same patch that I posted on the list after someone
>> sent it to me, it seems to solve the problem (xn* works).
> 
> It is similar, but not identical.  If you have the resources to test my
> patch,
> I would appreciate it.

I'll be travelling for the weekend, next week I'll give it a shot. Will
it apply on 9.0-BETA2 sources?

Regards,

Hugo
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Re: [CFT][PATCH] Netfront fixes for FreeBSD-head [and an OT issue]

2011-09-15 Thread Justin T. Gibbs

On 9/15/11 4:35 AM, Hugo Silva wrote:

On 09/15/11 05:43, Janne Snabb wrote:

On Mon, 12 Sep 2011, Justin T. Gibbs wrote:


I'm planning to ask RE for permission to merge the following netfront
fixes (listed below) into 9.0/head.

Assuming this is the same patch that I posted on the list after someone
sent it to me, it seems to solve the problem (xn* works).


It is similar, but not identical.  If you have the resources to test my 
patch,

I would appreciate it.

A major problem (and after the netdiff fix, the only one that comes to
mind in FreeBSD/Xen, from a SA PoV) right now is the VMs losing massive
amounts of time (just the other day I manually ran ntpdate, for a 1h
adjustment); started a thread last week or so, but it died down.

It may not happen 100% of the time (calcru: runtime went backwards +
losing system time), as I remember that a couple of years ago several
people on the list had this problem while I wasn't experiencing it.

Perhaps it depends on the dom0 OS, some system hardware.. I really have
no idea..

If someone else is running amd64 HVM+PV, let us know if you see the same?
We run it at Spectra Logic.  I can replicate the "calcru: runtime went 
backwards"

issue if I do not pin our FreeBSD VM such that it exclusively owns the CPUs
it uses.  I have not had time to dig into this yet, since it is not a 
blocking bug

for our product.  I hope to have some time to work on this in a few weeks.

--
Justin
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Re: [CFT][PATCH] Netfront fixes for FreeBSD-head [and an OT issue]

2011-09-15 Thread Hugo Silva
On 09/15/11 05:43, Janne Snabb wrote:
> On Mon, 12 Sep 2011, Justin T. Gibbs wrote:
> 
>> I'm planning to ask RE for permission to merge the following netfront
>> fixes (listed below) into 9.0/head.
> 

Assuming this is the same patch that I posted on the list after someone
sent it to me, it seems to solve the problem (xn* works).

I have several VMs running with it for around 3 weeks now, no problem
whatsoever in that area.

> Excellent! I was already assuming that 9.0 is going to be as broken
> with Xen as 8.2.

A major problem (and after the netdiff fix, the only one that comes to
mind in FreeBSD/Xen, from a SA PoV) right now is the VMs losing massive
amounts of time (just the other day I manually ran ntpdate, for a 1h
adjustment); started a thread last week or so, but it died down.

It may not happen 100% of the time (calcru: runtime went backwards +
losing system time), as I remember that a couple of years ago several
people on the list had this problem while I wasn't experiencing it.

Perhaps it depends on the dom0 OS, some system hardware.. I really have
no idea..

If someone else is running amd64 HVM+PV, let us know if you see the same?

Regards,

Hugo
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