On 10 December 2015 at 02:45, Xie, Huawei <huawei.xie at intel.com> wrote: > On 12/10/2015 6:49 AM, Martinx - ????? wrote: >> On 9 December 2015 at 18:05, Thomas Monjalon <thomas.monjalon at 6wind.com> >> wrote: >>> 2015-12-09 15:54, Martinx - ?????: >>>> Sorry to insist on this subject but, the time for releasing DPDK 2.2 >>>> is near and DPDK build with Xen 32-bit is broken. >>>> >>>> If DPDK doesn't fix this, there will be no way to enable XenVirt >>>> support for next Ubuntu LTS 16.04, which is a shame... >>>> >>>> I'm planning to use DPDK on Xen domUs (PVM, HVM, XenServer and on >>>> Amazon EC2) powered exclusively by a supported version of Ubuntu but, >>>> it is broken now... >>>> >>>> So, please, can someone take a look into this? :-P >>>> >>>> Thanks in advance! >>> Sorry, this area has no maintainer: >>> http://dpdk.org/browse/dpdk/tree/MAINTAINERS#n169 >>> >>> In such case, it may be logic to remove the dead code. >>> If someone wants to make it alive, he's welcome! >> Hi Thomas, >> >> Listen, if DPDK on Xen has no maintainer, where can I find the >> current state of DPDK on Xen? >> >> I mean, I'm planning to use DPDK with Xen on the following environments: >> >> * Amazon EC2 - HVM Enhanced Networking - *priority* >> * XenServer >> * Open Source Xen on Debian / Ubuntu (both PVM / HVM) >> >> But, if Xen support on DPDK has no maintainer, how to you guys are >> running DPDK on top of Xen (like for example, within Amazon EC2)? >> >> If I google for "DPDK Xen", I can find lots of good information but, >> I can't find recommended setup / drivers... >> >> Do you have any recommendation? > Thiago: > This xen PMD is based on grant table mechanism and virtio interface. > Worth to note is it needs customized backend, which now resides in > examples/vhost_xen. > Another approach is netfront based PMD, which has kernel netback backend > in place, but i guess it couldn't achieve best performance as we need > map each grant page in backend. Stephen submitted the patch for netfront > PMD http://dpdk.org/dev/patchwork/patch/3330/. Thomas, do you know its > status? > Anyway i will try to create the XEN environment, and check the issues. > >> >> Thank you! >> >> Best, >> Thiago >> >
Hello Xie, Thank you for your help, I really appreciated it! Basically, what I would like to understand is: - What is the BEST way of running DPDK inside a Xen domU guest? I'm seeing that there are too many options and not enough documentation about each, for example... * Does DPDK XENVIRT option, depends on XENDOM0 option? However, you said that it isn't fast / can't achieve best performance... * Apparently, Xen supports VirtIO (if I'm not wrong), but, I honestly don't know for sure, where/when it is available (XenServer? Amazon high-perf Net Instance? HVM? PVM?) * If Xen supports VirtIO (especially on Amazon / XenServer), isn't this the BEST way of running DPDK Apps on top of this kind of hypervisor (i.e., by not using XENVIRT at all)? Thanks again! Thiago
