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From: Venkata SwamyBabu Budumuru <venkataswamybabu.budumuru@citrix.com>
To: "cloudstack-users@incubator.apache.org"
	<cloudstack-users@incubator.apache.org>
Date: Wed, 12 Sep 2012 11:38:54 +0530
Subject: RE: qos_algorithm_params (MRW): kbps: 25600 for Guest VMs?
Thread-Topic: qos_algorithm_params (MRW): kbps: 25600 for Guest VMs?
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In case of VMware I see it setting to 200 Mbps for guest traffic but in cas=
e of Xen it is setting to ~25 Mbps

uuid ( RO)                        : dbc7e0fc-1e2b-a331-788a-ded5aa2b7a6e
                     vm-uuid ( RO): 442056e0-0bff-5977-93fc-a986993cfe87
               vm-name-label ( RO): i-2-14-VM
          allowed-operations (SRO): attach
          current-operations (SRO):
                      device ( RO): 0
                         MAC ( RO): 02:00:7e:09:00:0c
           MAC-autogenerated ( RO): false
                         MTU ( RO): 1500
          currently-attached ( RO): true
          qos_algorithm_type ( RW): ratelimit
        qos_algorithm_params (MRW): kbps: 25600
    qos_supported_algorithms (SRO):
                other-config (MRW): nicira-iface-id: 49fda265-88b7-46d3-94b=
d-69ec50a3f2c5; nicira-vm-id: 442056e0-0bff-5977-93fc-a986993cfe87
                network-uuid ( RO): 60179f2f-3835-6c83-af18-3d6bc6a50f7b
          network-name-label ( RO): VLAN-4fca9336-d655-bb55-5c4a-42f56350f1=
94-707
                 io_read_kbs ( RO): <expensive field>
                io_write_kbs ( RO): <expensive field>
                locking-mode ( RW): network_default
                ipv4-allowed (SRW):
                ipv6-allowed (SRW):

Thanks,
SWAMY

From: Venkata SwamyBabu Budumuru
Sent: Wednesday, September 12, 2012 11:26 AM
To: cloudstack-users@incubator.apache.org
Subject: qos_algorithm_params (MRW): kbps: 25600 for Guest VMs?

Hi,

Any reason why we by default limit network rate to 25600 kbps (~25Mbps) on =
guest VMs? Which parameter controls this setting? This is going to even con=
trol guest to guest traffic as well. Why do we do this by default? It makes=
 sense to rate limit public but, unsure about guest traffic.

I see the following global params but they are meant to set this value to 2=
00 Mbps

| Network  | DEFAULT  | management-server       | network.throttling.rate  =
  | 200   | Default data transfer rate in megabits per second allowed in ne=
twork.                   |
| Network  | DEFAULT  | management-server       | vm.network.throttling.rat=
e | 200   | Default data transfer rate in megabits per second allowed in Us=
er vm's default network. |
+----------+----------+-------------------------+--------------------------=
--+-------+----------------------------------------------------------------=
-------------------------+

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