[ovirt-users] [Ovirt 4.0.6] Suggestion required for Network Throughput options
TranceWorldLogic .
tranceworldlogic at gmail.com
Tue Jul 4 06:53:24 UTC 2017
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 . <
tranceworldlogic at 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 . <
> tranceworldlogic at 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 <ykaul at redhat.com> wrote:
>>
>>>
>>>
>>> On Fri, Jun 30, 2017 at 4:14 PM, TranceWorldLogic . <
>>> tranceworldlogic at 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 <ykaul at redhat.com> wrote:
>>>>
>>>>>
>>>>>
>>>>> On Thu, Jun 29, 2017 at 4:02 PM, TranceWorldLogic . <
>>>>> tranceworldlogic at 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 . <
>>>>>> tranceworldlogic at 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 <ykaul at redhat.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Thu, Jun 29, 2017 at 10:07 AM, TranceWorldLogic . <
>>>>>>>> tranceworldlogic at 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 at ovirt.org
>>>>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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