Re: XenServer 6.5(SP1) - HVM 're0: watchdog timeout' errors...

2015-09-14 Thread Roger Pau Monné
El 12/09/15 a les 0.13, Sydney Meyer ha escrit:
> I just noticed that these performance problems do not occur under 10.0 and 
> 10.1.
> 
> Starting with 10.2 IPv4 TCP performance drops from ~12 Gb/s under 10.1 to 
> ~350 Mb/s under 10.2.
> 
> Should i write a new bugreport for this?

Thanks for the report! I'm sorry I didn't realize it before and 10.2
shipped with this performance regression. I've bisected it during the
weekend and found the culprit, fix is being worked on :).

https://lists.freebsd.org/pipermail/svn-src-all/2014-September/091787.html

Roger.

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Re: XenServer 6.5(SP1) - HVM 're0: watchdog timeout' errors...

2015-09-14 Thread Sydney Meyer
I just read that you were working on importing a newer netfront from Linux and 
thought that maybe this could help finding the culprint, as KVM users seemed to 
have similar issues, e.g. issues with the offloading capabilities of the pv nic 
and/or checksum errors.

Anyhow, awesome news that you're on importing a new netfront.

> On 14 Sep 2015, at 18:00, Roger Pau Monné  wrote:
> 
> El 12/09/15 a les 0.13, Sydney Meyer ha escrit:
>> I just noticed that these performance problems do not occur under 10.0 and 
>> 10.1.
>> 
>> Starting with 10.2 IPv4 TCP performance drops from ~12 Gb/s under 10.1 to 
>> ~350 Mb/s under 10.2.
>> 
>> Should i write a new bugreport for this?
> 
> Thanks for the report! I'm sorry I didn't realize it before and 10.2
> shipped with this performance regression. I've bisected it during the
> weekend and found the culprit, fix is being worked on :).
> 
> https://lists.freebsd.org/pipermail/svn-src-all/2014-September/091787.html
> 
> Roger.
> 

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