Hi All, I tried using hwrng as source for VM I got below error.
qemu/backends/rng-random.c:44:entropy_available: assertion failed: (len != -1) Please help to understand it more. Thanks, ~Rohit On Mon, Jul 3, 2017 at 8:22 PM, TranceWorldLogic . < tranceworldlo...@gmail.com> wrote: > Hi Yaniv, > > I tried looking into rng direction and I found below stats. > I am not familiar with rng device but it look to me /dev/urandom giving me > better option. > But I am unaware how can I use urandom device in ovirt. > > RANDOM DEVICE ======> > cat /dev/random | rngtest -c 1000 > rngtest 5 > Copyright (c) 2004 by Henrique de Moraes Holschuh > This is free software; see the source for copying conditions. There is NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > > rngtest: starting FIPS tests... > rngtest: bits received from input: 20000032 > rngtest: FIPS 140-2 successes: 1000 > rngtest: FIPS 140-2 failures: 0 > rngtest: FIPS 140-2(2001-10-10) Monobit: 0 > rngtest: FIPS 140-2(2001-10-10) Poker: 0 > rngtest: FIPS 140-2(2001-10-10) Runs: 0 > rngtest: FIPS 140-2(2001-10-10) Long run: 0 > rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 > rngtest: input channel speed: (min=3.594; avg=4.813; max=5.968)Mibits/s > rngtest: FIPS tests speed: (min=93.958; avg=129.073; max=157.632)Mibits/s > rngtest: Program run time: 4111375 microseconds > > URANDOM DEVICE ======> > cat /dev/urandom | rngtest -c 1000 > rngtest 5 > Copyright (c) 2004 by Henrique de Moraes Holschuh > This is free software; see the source for copying conditions. There is NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > > rngtest: starting FIPS tests... > rngtest: bits received from input: 20000032 > rngtest: FIPS 140-2 successes: 1000 > rngtest: FIPS 140-2 failures: 0 > rngtest: FIPS 140-2(2001-10-10) Monobit: 0 > rngtest: FIPS 140-2(2001-10-10) Poker: 0 > rngtest: FIPS 140-2(2001-10-10) Runs: 0 > rngtest: FIPS 140-2(2001-10-10) Long run: 0 > rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 > rngtest: input channel speed: (min=1.035; avg=17.311; max=18.626)Gibits/s > rngtest: FIPS tests speed: (min=119.959; avg=161.107; max=164.427)Mibits/s > rngtest: Program run time: 120154 microseconds > > Thanks, > ~Rohit > > > > On Fri, Jun 30, 2017 at 7:42 PM, TranceWorldLogic . < > tranceworldlo...@gmail.com> wrote: > >> Your understanding is correct issue only due to encryption/decryption >> process but not got idea why not word. >> I found that in centos 7 we not have install rng-tools. >> >> Do it required to install for random generator ? >> >> I have changes nothing I just increase number of queues in vnet. It >> diffenetly increase throughput and create multiple softIRQs in VM. >> But for normal traffic this all things are not required it gives 10G >> throughput. >> >> Thanks, >> ~Rohit >> >> On Fri, Jun 30, 2017 at 7:08 PM, Yaniv Kaul <yk...@redhat.com> wrote: >> >>> >>> >>> On Fri, Jun 30, 2017 at 4:14 PM, TranceWorldLogic . < >>> tranceworldlo...@gmail.com> wrote: >>> >>>> Hi Yaniv, >>>> >>>> I have enabled random generator in cluster and also in VM. >>>> But still not see any improvement in throughput. >>>> >>>> lsmod | grep -i virtio >>>> virtio_rng 13019 0 >>>> >>> >>> Are you sure it's being used? What is the qemu command line (do you see >>> the device in the guest?) >>> >>> >>>> virtio_balloon 13834 0 >>>> virtio_console 28115 2 >>>> virtio_blk 18156 4 >>>> virtio_scsi 18361 0 >>>> virtio_net 28024 0 >>>> virtio_pci 22913 0 >>>> virtio_ring 21524 7 virtio_blk,virtio_net,virtio_p >>>> ci,virtio_rng,virtio_balloon,virtio_console,virtio_scsi >>>> virtio 15008 7 virtio_blk,virtio_net,virtio_p >>>> ci,virtio_rng,virtio_balloon,virtio_console,virtio_scsi >>>> >>>> Would please check do I missing some virtio module ? >>>> >>>> One more finding, if I set queue property in vnic profile then I got >>>> good throughput. >>>> >>> >>> Interesting - I had assumed the bottleneck would be the >>> encryption/decryption process, not the network. What do you set exactly? >>> Does it matter in non-encrypted traffic as well? Are the packets (and the >>> whole communication) large or small (i.e, would jumbo frames help) ? >>> Y. >>> >>> >>>> Thanks, >>>> ~Rohit >>>> >>>> >>>> On Fri, Jun 30, 2017 at 12:11 AM, Yaniv Kaul <yk...@redhat.com> wrote: >>>> >>>>> >>>>> >>>>> On Thu, Jun 29, 2017 at 4:02 PM, TranceWorldLogic . < >>>>> tranceworldlo...@gmail.com> wrote: >>>>> >>>>>> Got it, just I need to do modprobe to add virtio-rng driver. >>>>>> I will try with this option. >>>>>> >>>>> >>>>> Make sure it is checked on the cluster. >>>>> Y. >>>>> >>>>>> >>>>>> Thanks for your help, >>>>>> ~Rohit >>>>>> >>>>>> On Thu, Jun 29, 2017 at 6:20 PM, TranceWorldLogic . < >>>>>> tranceworldlo...@gmail.com> wrote: >>>>>> >>>>>>> Hi, >>>>>>> >>>>>>> I am using host as Centos 7.3 and guest also centos 7.3 >>>>>>> it have 3.10 kernel version. >>>>>>> >>>>>>> But I not see virtio-rng in guest VM. Is this module come with >>>>>>> kernel or separately I have to install ? >>>>>>> >>>>>>> Thanks, >>>>>>> ~Rohit >>>>>>> >>>>>>> On Thu, Jun 29, 2017 at 5:28 PM, Yaniv Kaul <yk...@redhat.com> >>>>>>> wrote: >>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> On Thu, Jun 29, 2017 at 10:07 AM, TranceWorldLogic . < >>>>>>>> tranceworldlo...@gmail.com> wrote: >>>>>>>> >>>>>>>>> Hi, >>>>>>>>> >>>>>>>>> To increase network throughput we have changed txqueuelen of >>>>>>>>> network device and bridge manually. And observed improved throughput. >>>>>>>>> >>>>>>>> >>>>>>>> Interesting, as I've read the default (1000) should be good enough >>>>>>>> for 10g, for example. >>>>>>>> >>>>>>>> Are you actually seeing errors on the interface (overruns) and such? >>>>>>>> >>>>>>>> >>>>>>>>> >>>>>>>>> But in ovirt I not see any option to increase txqueuelen. >>>>>>>>> >>>>>>>> >>>>>>>> Perhaps use ifup-local script to set it when the interface goes up? >>>>>>>> >>>>>>>> >>>>>>>>> Can someone suggest me what will be the right way to increase >>>>>>>>> throughput ? >>>>>>>>> >>>>>>>>> Note: I am trying to increase throughput for ipsec packets. >>>>>>>>> >>>>>>>> >>>>>>>> For ipsec, probably best to ensure virtio-rng is enabled. >>>>>>>> Y. >>>>>>>> >>>>>>>> >>>>>>>>> >>>>>>>>> Thanks, >>>>>>>>> ~Rohit >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Users mailing list >>>>>>>>> Users@ovirt.org >>>>>>>>> http://lists.ovirt.org/mailman/listinfo/users >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
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