[ovs-discuss] Query regarding OVS configuration in OpenSuse Dom0 (Xen Hypervisor)

Justin Pettit jpettit at nicira.com
Fri Feb 17 18:25:57 UTC 2012


Did you follow the instructions for enabling support for ingress policing in "INSTALL.Linux"?

      For optional support of ingress policing, you must enable kernel
      configuration options NET_CLS_BASIC, NET_SCH_INGRESS, and
      NET_ACT_POLICE, either built-in or as modules.  (NET_CLS_POLICE is
      obsolete and not needed.)

If you're running an older version of OVS, the instructions are as follows:

      For optional support of ingress policing, you must enable kernel
      configuration options NET_CLS_ACT, NET_CLS_U32, NET_SCH_INGRESS,
      and NET_ACT_POLICE, either built-in or as modules.
      (NET_CLS_POLICE is obsolete and not needed.)

I don't see some of the modules in your list below.  Are they built into your kernel?

--Justin


On Feb 17, 2012, at 10:11 AM, Mohit Dhingra wrote:

> Hello,
> 
> I looked at the debugging tip, it says, check whether your kernel is built with "ingress qdisc" or not. I am not really sure of that. I searched for it, and found "tc qdisc add dev eth0 ingress" to enable it. I ran it, again configured the same QoS parameters for vif2.0, but no change in netperf output.
> 
> Here is the mod list, if it helps.
> cadlab:~/Documents # lsmod
> Module                  Size  Used by
> sch_ingress             2386  0 
> usb_storage            53657  0 
> uas                    10350  0 
> iptable_filter          1946  0 
> ip_tables              22302  1 iptable_filter
> x_tables               27449  2 iptable_filter,ip_tables
> openvswitch_mod        87483  1 
> loop                   20091  4 
> bridge                 92152  0 
> stp                     2331  1 bridge
> llc                     6103  2 bridge,stp
> fuse                   82307  3 
> usbbk                  25163  0 
> gntdev                  8554  6 
> netbk                  42268  0 [permanent]
> blkbk                  29670  0 [permanent]
> blkback_pagemap         2806  1 blkbk
> blktap                126872  2 [permanent]
> domctl                  6437  2 blkbk,blktap
> xenbus_be               4261  4 usbbk,netbk,blkbk,blktap
> evtchn                  6002  7 
> edd                     9664  0 
> snd_pcm_oss            53007  0 
> snd_mixer_oss          19233  1 snd_pcm_oss
> snd_seq                66355  0 
> snd_seq_device          7770  1 snd_seq
> tcp_bic                 3363  27 
> dm_mod                 85824  0 
> joydev                 12518  0 
> snd_hda_codec_realtek   356107  1 
> snd_hda_intel          29349  4 
> snd_hda_codec         107570  2 snd_hda_codec_realtek,snd_hda_intel
> snd_hwdep               7612  1 snd_hda_codec
> snd_pcm               106732  3 snd_pcm_oss,snd_hda_intel,snd_hda_codec
> pcspkr                  2190  0 
> snd_timer              27510  2 snd_seq,snd_pcm
> serio_raw               5222  0 
> sr_mod                 16493  0 
> snd                    83254  18 snd_pcm_oss,snd_mixer_oss,snd_seq,snd_seq_device,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer
> soundcore               8494  1 snd
> sg                     33121  0 
> firewire_ohci          31303  0 
> i7core_edac            20315  0 
> firewire_core          66559  1 firewire_ohci
> iTCO_wdt               12566  0 
> iTCO_vendor_support     3118  1 iTCO_wdt
> edac_core              50431  1 i7core_edac
> i2c_i801               10856  0 
> snd_page_alloc          9473  2 snd_hda_intel,snd_pcm
> e1000e                203595  0 
> crc_itu_t               1779  1 firewire_core
> ext4                  398734  3 
> jbd2                   88998  1 ext4
> crc16                   1747  1 ext4
> usbhid                 50613  0 
> hid                    87441  1 usbhid
> uhci_hcd               29265  0 
> nouveau               610369  2 
> ttm                    76417  1 nouveau
> drm_kms_helper         36694  1 nouveau
> ehci_hcd               61639  0 
> drm                   230792  4 nouveau,ttm,drm_kms_helper
> i2c_algo_bit            6342  1 nouveau
> usbcore               213666  7 usb_storage,uas,usbbk,usbhid,uhci_hcd,ehci_hcd
> i2c_core               32282  5 i2c_i801,nouveau,drm_kms_helper,drm,i2c_algo_bit
> video                  15865  1 nouveau
> output                  2727  1 video
> button                  6797  1 nouveau
> xenblk                 26089  0 
> cdrom                  42800  2 sr_mod,xenblk
> xennet                 36109  0 
> fan                     3215  0 
> processor              36333  0 
> ata_generic             3995  0 
> thermal                14850  0 
> thermal_sys            17334  4 video,fan,processor,thermal
> hwmon                   2648  1 thermal_sys
> 
> cadlab:~/Documents # brctl show
> bridge name     bridge id               STP enabled     interfaces
> eth0            0000.7071bc62737a       no              peth0
>                                                         vif2.0
>                                                         vif5.0
> 
> cadlab:~/Documents # ovs-vsctl show
> d3f38d68-2623-4a60-a169-fa7bf14e6ca4
>     Bridge "eth0"
>         Port "vif2.0"
>             Interface "vif2.0"
>         Port "peth0"
>             Interface "peth0"
>         Port "vif5.0"
>             Interface "vif5.0"
>         Port "eth0"
>             Interface "eth0"
>                 type: internal
> 
> I configured vif2.0 for 1Mbps, but of no use. Can you please help me out.
> 
> ---------------------------- 
> Thanks & Regards
> Mohit Dhingra 
> +919611190435
> 
> 
> On 14 February 2012 09:24, Jesse Gross <jesse at nicira.com> wrote:
> On Mon, Feb 13, 2012 at 7:07 PM, Mohit Dhingra <mohitdhingras at gmail.com> wrote:
> > Hi All,
> >
> > I am following the same instructions as given in
> > http://openvswitch.org/support/config-cookbooks/qos-rate-limiting/
> >
> > I have exactly the same setup, except for the measurement host, but I don't
> > see any difference in the netperf results, I have given more details in the
> > previous post. Any suggestions/input please?
> 
> Did you look at the debugging tips at the bottom of the page?
> 
> > Hi Jesse,
> > Ok, So that means hardware should be configurable enough,  that it
> > understands VMs, and QoS for each VM? Is there any way to set egress QoS on
> > the NIC?
> 
> It's not a hardware feature.  It's software configured on the NIC
> device.  As I mentioned before, there's more information in the
> ovs-vsctl man page.  It tends to work better than ingress policing but
> you should check that that's at least loaded and running correctly
> first since it's easier to configure.
> 
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