Re: [ovirt-users] [Ovirt 4.0.6] Suggestion required for Network Throughput options

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 . < tranceworldlogic(a)gmail.com&gt; 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 <ykaul(a)redhat.com&gt; wrote: > >> >> >> On Fri, Jun 30, 2017 at 4:14 PM, TranceWorldLogic . < >> tranceworldlogic(a)gmail.com&gt; 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 <ykaul(a)redhat.com&gt; wrote: >>> >>>> >>>> >>>> On Thu, Jun 29, 2017 at 4:02 PM, TranceWorldLogic . < >>>> tranceworldlogic(a)gmail.com&gt; 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 . < >>>>> tranceworldlogic(a)gmail.com&gt; 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 <ykaul(a)redhat.com&gt; >>>>>> wrote: >>>>>> >>>>>>> >>>>>>> >>>>>>> On Thu, Jun 29, 2017 at 10:07 AM, TranceWorldLogic . < >>>>>>> tranceworldlogic(a)gmail.com&gt; 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(a)ovirt.org >>>>>>>> http://lists.ovirt.org/mailman/listinfo/users >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >