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Hi Ashish, IMO, it is yes, no way to increase tx_queue_size for direct type interface ------- Best Regards, Yalan Zhang IRC: yalzhang Internal phone: 8389413 On Thu, Oct 26, 2017 at 3:38 PM, Ashish Kurian <ashishbnv@gmail.com> wrote: > Hi Yalan, > > In the previous email you mentioned "tx_queue_size='512' will not work in > the guest with direct type interface, in fact, no matter what you set, it > will not work and guest will get the default '256'. " > > So i...

...# ethtool -g eth0 Ring parameters for eth0: Pre-set maximums: RX: *512* RX Mini: 0 RX Jumbo: 0 TX: 256 Current hardware settings: RX: *512* RX Mini: 0 RX Jumbo: 0 TX: 256 ------- Best Regards, Yalan Zhang IRC: yalzhang Internal phone: 8389413 On Thu, Oct 26, 2017 at 2:33 AM, Ashish Kurian <ashishbnv@gmail.com> wrote: > Hi Michal, > > An update to what I have already said : when I try adding <driver > name='qemu' txmode='iothread' ioeventfd='on' event_idx='off' queues='1' > rx_queue_size='512' tx_queue_size='512'>...

...t; wrote: > Hi Ashish, > > IMO, it is yes, no way to increase tx_queue_size for direct type interface > > > > > > > ------- > Best Regards, > Yalan Zhang > IRC: yalzhang > Internal phone: 8389413 > > On Thu, Oct 26, 2017 at 3:38 PM, Ashish Kurian <ashishbnv@gmail.com> > wrote: > >> Hi Yalan, >> >> In the previous email you mentioned "tx_queue_size='512' will not work >> in the guest with direct type interface, in fact, no matter what you set, >> it will not work and guest will get the default '25...

...efault '256'. " So if I am using macvtap for my interfaces, then the device type will always be direct type. Does it mean that there is no way I can increase the buffer size with the macvtap interfaces? Best Regards, Ashish Kurian On Thu, Oct 26, 2017 at 9:04 AM, Ashish Kurian <ashishbnv@gmail.com> wrote: > Hi Yalan, > > Thank you for your comment on qemu-kvm-rhev > > I am waiting for a response about my previous email with the logs > attached. I do not understand what is the problem. > > > On Oct 26, 2017 8:58 AM, "Yalan Zhang" <yalzhang...

Hi Michal, What I found was that when I restarted the machine and did a virsh edit command to see the xml config, I see that it is was not actually changed. This suggests why I saw 256 again after restarting. So now I tried again to edit the xml via virsh edit command and used the following to set the parameters. <driver name='qemu' txmode='iothread' ioeventfd='on'

...gt; RX Jumbo: 0 > TX: 256 > Current hardware settings: > RX: *512* > RX Mini: 0 > RX Jumbo: 0 > TX: 256 > > > > > ------- > Best Regards, > Yalan Zhang > IRC: yalzhang > Internal phone: 8389413 > > On Thu, Oct 26, 2017 at 2:33 AM, Ashish Kurian <ashishbnv@gmail.com> > wrote: > >> Hi Michal, >> >> An update to what I have already said : when I try adding <driver >> name='qemu' txmode='iothread' ioeventfd='on' event_idx='off' queues='1' >> rx_queue_size='512' tx_...

...rectory using /home/to/your/checkout/daemon/libvirtd But I still see that the version is 1.3.1. I have also stopped the already running libvirt daemon and ran the new daemon from the directory and it is showing 1.3.1 Best Regards, Ashish Kurian On Thu, Oct 26, 2017 at 10:50 AM, Ashish Kurian <ashishbnv@gmail.com> wrote: > Hi Michal, > > Mine is > > iplab@iceman:~$ libvirtd --version > libvirtd (libvirt) 1.3.1 > > I think this can be the issue. I will update and try again > > > > Best Regards, > Ashish Kurian > > On Thu, Oct 26, 2017 at 10:46 AM, Mi...

...emu' txmode='iothread' ioeventfd='on' event_idx='off' > is added to the interface. The missing parameters are : queues='1' rx_queue_size='512' tx_queue_size='512' Best Regards, Ashish Kurian On Wed, Oct 25, 2017 at 5:07 PM, Ashish Kurian <ashishbnv@gmail.com> wrote: > Hi Michal, > > What I found was that when I restarted the machine and did a virsh edit > command to see the xml config, I see that it is was not actually changed. > This suggests why I saw 256 again after restarting. > > So now I tried again to edit the...

On 10/26/2017 10:38 AM, Ashish Kurian wrote: > Hi Yalan and Michal, > > Thank you for your response. So what I understand is that I can change > rx_queue size even if I use direct type interface and qemu driver as long > as the driver is virtio. Am I right? Yes. > If that is the case why am I getting > the error saying that > > error: XML document failed to validate

Hi Michal, Mine is iplab@iceman:~$ libvirtd --version libvirtd (libvirt) 1.3.1 I think this can be the issue. I will update and try again Best Regards, Ashish Kurian On Thu, Oct 26, 2017 at 10:46 AM, Michal Privoznik <mprivozn@redhat.com> wrote: > On 10/26/2017 10:38 AM, Ashish Kurian wrote: > > Hi Yalan and Michal, > > > > Thank you for your response. So what I

Dear Users/Developers, I am using a KVM Ubuntu VM as a degrader to apply specific delays to incoming packets. As the delay for my packets can be higher than 7.5 seconds, there is not enough buffer on my interface to buffer all the packets. Therefore those overflowing packets are dropped in the machine and not forwarded. When I tried to use the command ethtool -G ens8 rx 512 to increase the