CPU utilization with kvm / vhost, differences 3.14 / 4.4 / 4.6

2016-07-27 Thread Patrick Schaaf
Hi, I'm stumped by a weird development in measured CPU utilization when testing an upgrade path from 3.14.70 to 4.4.14. I'm running, on identical hardware (2 4-core Xeon E5420), a HA (active/standby) pair of firewall/loadbalancer VMs. The OS on the host and the VM is identical - openSUSE 13.1

Re: [PATCH 2/3] x_tables: Use also dev->ifalias for interface matching

2015-01-12 Thread Patrick Schaaf
On Monday 12 January 2015 08:51:54 Eric Dumazet wrote: > On Mon, 2015-01-12 at 17:39 +0100, Patrick Schaaf wrote: > > > > Not to comment on the ifalias thing, which I think is unneccessary, > > too, but matching on interface names instead of only ifindex, is > > definit

Re: [PATCH 2/3] x_tables: Use also dev->ifalias for interface matching

2015-01-12 Thread Patrick Schaaf
On Monday 12 January 2015 17:22:57 Patrick McHardy wrote: > On 12.01, Patrick Schaaf wrote: > > > > Interfaces come and go through many different actions. There's the admin > > downing and upping stuff like bridges or bonds. There's stuff like libvirt > >

Re: Kernel 4.1 hang, apparently in __inet_lookup_established

2015-11-16 Thread Patrick Schaaf
On Sunday 15 November 2015 16:58:33 Grant Zhang wrote: > > Have you tried the two patches Eric mentioned? One of my 4.1.11 server > just hanged with very similar stack trace and I am wondering whether the > aforementioned patches would help. Sorry, Grant - I'm sticking to 3.14.xx for now. best r

Kernel 4.1 hang, apparently in __inet_lookup_established

2015-09-23 Thread Patrick Schaaf
Dear kernel developers, I recently started to upgrade my production hosts and VMs from the 3.14 series to 4.1 kernels, starting with 4.1.6. Yesterday, for the second time after I started these upgrades, I experienced one of our webserver VMs hanging. The first time this happened, the VM hung co