a cooked version of a raw (binary) capture.
In both cases, you would be looking for large gaps in time -
particularly the openstack cli traces.
happy benchmarking,
rick jones
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rt_retrans,remote_transport_retrans
rick jones
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In addition to the suggestions from others, you might verify that this
problematic node is correctly connected to the guest VLAN - including
the configuration of the switch port(s) to which the node is connected.
rick jones
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and
alter them manually on the compute/network nodes.
The HPE Helion docs on changing MTU, while describing some things
specific to HPE Helion, does include the caveat about existing networks
not being altered:
https://docs.hpcloud.com/hos-3.x/#helion/networking/configure_mtu.html
rick jones
If you can, you might try following the packets.
rick jones
On Wed, Nov 9, 2016 at 4:58 PM, Rick Jones wrote:
On 11/09/2016 08:06 AM, Satish Patel wrote:
We have 3 node cluster on Mikata openstack and we are using DVR
network. Recently we build two puppetmaster server on openstack and
put them be
be a reason like vxlan or GRE.
So for experiment i change mtu 1500 on puppetmaster server on
openstack but it didn't help. How do i fix this issue?
What happens if LBaaS isn't between the client and server?
Does Puppet do anything with UDP or is it all TCP?
ia layer 2 - aka ethernet - and switching rather
than layer 3 and routing) must have the same physical MTU.
If you have end-nodes with JumboFrames enabled, the physical
infrastructure joining them at layer2 must also have JumboFrames enabled.
rick jones
On Wed, Nov 9, 2016 at 3:13 PM, Moha
to do DHCP yes?
rick jones
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t time from some different "external"
sources would seem to be in order.
rick jones
Thanks!
Gustavo
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he data connection. Normally that is left to the stack to decide, but
you can specify it explicitly with another test-specific option:
netperf -H 172.23.244.169 -t UDP_STREAM -- -m 1234 -P ,12867
will cause the remote netserver to bind its data socket to port 12867.
Omit t
On 06/30/2016 01:05 PM, Turbo Fredriksson wrote:
On Jun 30, 2016, at 7:04 PM, Rick Jones wrote:
For what it is worth, a quick test with some Mitaka-based bits,
using 192.168.123.0/24 as the private network and ping suggests the
neutron routers will be willing to forward the traffic just fine
192.168.123.0/24 as the private network and ping suggests the neutron
routers will be willing to forward the traffic just fine.
That would be better than trying to do the same thing with instances as
I proposed before.
happy benchmarking,
rick jones
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were compatible (didn't overlap) with the external address
ranges in the rest of your infrastructure.
rick jones
Thanks!
Gustavo
On Wed, Jun 29, 2016 at 7:24 PM, Mike Spreitzer mailto:mspre...@us.ibm.com>> wrote:
Gustavo Randich mailto:gustavo.rand...@gmail.com>>
te node(s) must also have a connection to the
external VLAN just like a controller node.
I assume that if you do not enable DVR, you also do not need the
external provider network to be populated to the compute nodes.
happy benchmarking,
rick jones
_
On 04/26/2016 10:16 AM, Rick Jones wrote:
On 04/25/2016 11:33 PM, Jaison Peter wrote:
But one of the major drawback we are seeing with DVR is the public IP
consumption.If we have 100 clients and 1 VM per client , eventually
there will be 100 tenants and 100 routers. Since its a public cloud, we
as
measured by setting-up the instances, taking the baseline, and then
manually "rewiring" bypassing the linux bridge.
happy benchmarking,
rick jones
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On 03/29/2016 01:01 PM, Kaustubh Kelkar wrote:
-Original Message-
From: Rick Jones [mailto:rick.jon...@hpe.com]
Sent: Tuesday, March 29, 2016 1:43 PM
To: openstack@lists.openstack.org
Subject: Re: [Openstack] Compute downloading corrupted image from Glance
On 03/29/2016 10:17 AM
protection - at least parity, if not
ECC. This includes components in the NIC itself, the I/O bus etc etc.
If disabling checksum offload on the compute node doesn't resolve the
matter, you might consider the same on the controller.
rick jones
(disabling checksum offload will likely a
On 02/23/2016 10:59 AM, Yngvi Páll Þorfinnsson wrote:
Hi
I tried it again with another instance, and another fl.ip
And this time, the fl.ip became available again... so I could reuse it.
I'm not sure why the first one became not available.
How do you mean became available again? Are you doing
we are all supposed
to start calling them projects not tenants...) and you can then
associate the IP with a port belonging to another instance.
rick jones
I‘ve been trying some nova and neturon cmd‘s but without success.
Here is an example of error:
root@opst-ctrl1-dev:/# nova floating-i
would think that netem could be your inexpensive friend here. Either
in the control nodes themselves, or in a linux box configured to
route/bridge between them.
rick jones
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nodes
is "just" 100 Mbit/s is good, but I suspect it is rather "chatty" and as
Clint somewhat warned, trying to run that across a WAN with non-trivial
latency may be "interesting."
rick jones
From: EXT Tomas Vondra [von
rking,
rick jones
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d. Existing
instances should pick it up if you "nova reboot" them. (I don't think a
reboot initiated from within the instance/VM would do it).
Whether there is something similar for disc I/O I don't know - I've not
had to go looking for that yet.
happy benchmarking
el, and an instance running either 14.04 (3.13) or
15.04 (3.19). There were virtio_net driver changes around buffer
handling which appear to be the cause. Perhaps something similar
happened for the disc I/O path and what is likely the even older kernel
in CentOS6?
happy benchmarking,
en to capture the packets to a binary file
so you can re-read the .pcap with the -e option (show ethernet info) and
perhaps -v ?
rick jones
If I manually try with the
"arping -c 10 -U -I eth0 15.12.11.34" command, tcpdump logs the following:
04:57:15.907743 ARP, Ethernet (le
On 03/14/2015 03:32 PM, Georgios Dimitrakakis wrote:
Hello again Rick!
On 03/13/2015 06:25 PM, Georgios Dimitrakakis wrote:
If I do an :
arping -U -I etho x.x.x.x
where x.x.x.x is the IP address.
I can almost immediately access them outside of the subnet!
I had forgotten that, Still is
instances in the subnet, or just for
accesses from outside the subnet (ie through a real router)?
There may be some rather "conservative" routers out there which might
not accept gratuitous ARPs, considering it more secure to ARP for
those IPs explicitly itself.
real router)?
There may be some rather "conservative" routers out there which might
not accept gratuitous ARPs, considering it more secure to ARP for those
IPs explicitly itself.
rick jones
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shell ?
I would think the glance cli - glance image-create for that?
rick jones
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g between the VM and the
host, where in this part we can think of the VM as being akin to the scp
receiving process.
happy benchmarking,
rick jones
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in scp etc. etc.
If you install netperf into the two VMs, I can talk you through the
process of how to run some of the more "interesting" tests.
rick
El 16/12/2014 20:27, "Rick Jones" mailto:rick.jon...@hp.com>> escribió:
On 12/16/2014 11:09 AM, Georg
see if you use a "pure" networking benchmark such as
netperf or iperf?
rick jones
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On 12/16/2014 11:37 AM, Adrián Norte Fernández wrote:
Read the names carefully again :)
I was suggesting what I used to do in the past when on a new OpenStack
install I had this problem.
Indeed, I got the names crossed. Anyway, running netperf is worthwhile
even in a Neutron environment. Run
rk such as netperf
or iperf?
rick jones
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instance was on the order of about 250ish Mbit/s as it happens...
happy benchmarking,
rick jones
El 16/12/2014 18:36, "Georgios Dimitrakakis" mailto:gior...@acmac.uoc.gr>> escribió:
Hi all!
In my OpenStack installation (Icehouse and use nova legacy
networking) the
fills because it has
started seeing more MAC addresses than it is designed to handle?
A switch which started flooding traffic because its packet buffers were
full would be very, well, interesting :)
rick jones
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that volumes would be the better/less complicated
way to go. Boot from and store in Cinder volumes and then they can come
and go as you will.
rick jones
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Might this be an example of different people seeing different things
because they are looking at different versions of the nova CLI?
rick jones
(In the version of nova I happen to use - 2.17.0.65 - I see a
--tenant_id option rather than a --tenant option in the output of nova
help
ML2 plugin and ovs.
Best regards,
Johanna
--port_security_enabled False perhaps? At least when using Neutron...
rick jones
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seem possible to have more than one floating IP for an instance.
rick jones
On Fri, Dec 20, 2013 at 11:23 PM, Guillermo Alvarado
wrote:
Hi everybody,
It is possible to assign two floating ip's to an a single instance in
havana? How can I perform that.
Any help would be appreciated.
Thanks
a bug?
If all you have done is disassociate the floating IP from the instance
(port), and it no longer appears in the output of neutron
floatingip-list for that tenant, that is IMO a bug.
rick jones
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On 12/10/2013 04:12 PM, Rick Jones wrote:
On 12/10/2013 03:23 PM, Kotwani, Mukul wrote:
A new piece of data..
We used the disable_fallocate configurable on Ubuntu, and the numbers
do reduce, but they are nowhere near the numbers for Redhat (5.8).
As an example, for a specific test:
PUT for
orted backports) and what you later say is
Ubuntu 13.04 (3.8 kernel?) using the same I/O scheduler in their drivers?
rick jones
Has anyone run Swift on RH and done comparisons with Ubuntu?
Any help/pointers would be great!
Thanks,
Mukul
-Original Message-
From: Kotwani, Mukul
e the port yourself explicitly
via neutron, then pass that port id through the floatingip-create and
then boot the instance with that port id rather than with the network id.
Then I suspect the chances are reasonably good that as the guest OS
boots in the instance, the floater will be associated.
On 10/27/2013 11:59 AM, Martinx - ジェームズ wrote:
Guys,
I am not detecting any problems related to "MTU = 1500" when using VXLAN!
It is easy to reproduce the "GRE MTU problem", when using GRE tunnels
with MTU = 1500, from a Instance, it is impossible to use RubyGems
(Ubuntu 12.04 Instance), for ex
y networking at a distance."
Sadly, describing Neutron as "Networking with no inherent charge"
doesn't work as well :)
rick jones
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hidden from them by the encapsulation protocol.
That then is what I was getting at when talking about NICs peering into GRE.
rick jones
All I want for Christmas is a 32 bit VLAN ID and NICs and switches which
understand it... :)
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It is still less than
a half...
I would suggest checking for individual CPUs maxing-out during the 400
Mbit/s transfers.
rick jones
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he OS running in the
instances is Linux). Netperf will present 64KB of data to the transport
in each send call, and will run for 30 seconds. The socket buffer sizes
will be at their defaults - which under linux means they will autotune.
happy benchmarking,
rick jones
For extra credit :) you
aking packet traces at the instance or perhaps the
namespace and try to discern packet losses at the receiving side, though
it can be a bit more difficult.
rick jones
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selected private IPs, you could create a static
/etc/hosts file to place on all your instances to map from hostname to
IP. Then you would be able to use names to access them.
rick jones
Regards.
2013/10/9 Rick Jones mailto:rick.jon...@hp.com>>
On 10/09/2013 05:32 PM, Guilherme
round it?
When you say "can't ssh" can you be a bit more explicit? What sort of
error message do you get when you try to ssh? The answer to that will
probably guide responses.
rick jones
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. Or you can take snapshots of netstat -s output
from before and after your iperf run(s) and do the math by hand.
rick jones
if the netperf in multiverse isn't new enough to grok the -o option, you
can grab the top-of-trunk from http://www.netperf.org/svn/netperf2/trun
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