23 Zář
2020
23 Zář
'20
17:45
Hi Daniel
* Server listens: 967 (multiple v4 and v6 networks)
* Physical server
* NIC details
*-network:0
description: Ethernet interface
product: NetXtreme BCM5720 2-port Gigabit Ethernet PCIe
vendor: Broadcom Inc. and subsidiaries
physical id: 0
bus info: pci@0000:02:00.0
logical name: eno1
version: 00
serial: b0:83:fe:c8:f3:ec
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi msix pciexpress bus_master cap_list rom
ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd
autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3
driverversion=3.137 duplex=full firmware=FFV21.60.2 bc 5720-v1.39
ip=38.88.50.50 latency=0 link=yes multicast=yes port=twisted pair
speed=1Gbit/s
resources: irq:16 memory:d80a0000-d80affff memory:d80b0000-d80bffff
memory:d80c0000-d80cffff memory:dd800000-dd83ffff
Thanks for the continuing support
Jonathan
On Wed, 23 Sep 2020 at 12:47, Daniel Salzman <daniel.salzman(a)nic.cz> wrote:
Jonathan,
there must be something wrong with the networking. How many
`server.listen` configuration values
do yo have? Is it a physical server or a virtual one? What is the network
card used?
Daneil
On 9/23/20 1:18 PM, Jonathan Hewlett wrote:
how
:-)
company
number 8576358. Registered Offices: Saddlers House, Gutter Lane,
London EC2V 6AE.
--
--\--
Jonathan Hewlett
^Senior\ Systems\ Engineer\n$
CentralNic Group plc (LSE:CNIC)
https://www.centralnic.com
Tel: +44.7548243020
CentralNic Group plc is a company registered in England and Wales with
company number 8576358. Registered Offices: Saddlers House, Gutter Lane,
London EC2V 6AE.
Daniel
Thank you for your time
# knotc status workers
UDP workers: 24, TCP workers 24, background workers: 10 (running: 0,
pending: 0)
image.png
Kind regards
Jonathan
On Wed, 23 Sep 2020 at 07:59, <daniel.salzman(a)nic.cz <mailto:
daniel.salzman(a)nic.cz>> wrote:
Hi Jonathan,
On 2020-09-22 23:11, Jonathan Hewlett wrote:
> Hi,
>
> We run around 50 knot servers around the world, with great success
-
thanks
for the software!
Thanks for this feedback :-)
>
> We are just a little curious about seemingly high CPU usage, and > best to interpret the results, if
someone could advise?
Specifically,
> we are seeing the majority of the cpu
time in 'system' and not
'user',
what
would that suggest is happening perhaps?
Could you provide me the output from `knotc status workers`?
I like htop. Are you able to send me a screenshot when running htop? [Don't forget to configure:
F2
Display options->Detailed CPU time
(System/IO-Wait/Hard-IRQ/Soft-IRQ/Steal/Guest)
F10
]
Best,
Daniel
>
> Any tuning help gratefully received!
>
> Our platform (sample)
>
> 24 Core CPU E5-2440 0 @ 2.40
> 64Gb RAM
> SSD
>
> knot-2.9.5, running on Centos 8.2
>
> Currently receiving around 4k pps
>
> Server is authoritative for a 278 zones, the largest zone file
being
> around 600Mb
>
> Output of top
>
> top - 20:50:38 up 6 days, 4:49, 2 users, load average: 13.47,
> 12.34, 11.83
> Tasks: 321 total, 2 running, 318 sleeping, 0 stopped, 1
zombie
> %Cpu0 : 4.0 us, 34.1 sy, 0.0 ni, 60.3
id, 0.3 wa, 0.7 hi, 0.7
> si, 0.0 st
> %Cpu1 : 4.3 us, 19.4 sy, 0.0 ni, 75.3 id, 0.0 wa, 0.3 hi, 0.7
> si, 0.0 st
> %Cpu2 : 4.3 us, 33.8 sy, 0.0 ni, 60.9 id, 0.0 wa, 0.7 hi, 0.3
> si, 0.0 st
> %Cpu3 : 5.0 us, 21.2 sy, 0.0 ni, 73.2 id, 0.0 wa, 0.3 hi, 0.3
> si, 0.0 st
> %Cpu4 : 3.3 us, 34.9 sy, 0.0 ni, 61.5 id, 0.0 wa, 0.3 hi, 0.0
> si, 0.0 st
> %Cpu5 : 3.0 us, 20.2 sy, 0.0 ni, 76.2 id, 0.0 wa, 0.3 hi, 0.3
> si, 0.0 st
> %Cpu6 : 4.0 us, 35.2 sy, 0.0 ni, 60.4 id, 0.0 wa, 0.3 hi, 0.0
> si, 0.0 st
> %Cpu7 : 5.0 us, 18.7 sy, 0.0 ni, 76.0 id, 0.0 wa, 0.3 hi, 0.0
> si, 0.0 st
> %Cpu8 : 2.0 us, 35.0 sy, 0.0 ni, 62.3 id, 0.0 wa, 0.7 hi, 0.0
> si, 0.0 st
> %Cpu9 : 2.0 us, 20.0 sy, 0.0 ni, 77.7 id, 0.0 wa, 0.3 hi, 0.0
> si, 0.0 st
> %Cpu10 : 3.7 us, 34.4 sy, 0.0 ni, 61.2 id, 0.0 wa, 0.7 hi, 0.0
> si, 0.0 st
> %Cpu11 : 3.3 us, 20.7 sy, 0.0 ni, 75.7 id, 0.0 wa, 0.3 hi, 0.0
> si, 0.0 st
> %Cpu12 : 2.3 us, 34.6 sy, 0.0 ni, 62.1 id, 0.0 wa, 0.7 hi, 0.3
> si, 0.0 st
> %Cpu13 : 3.3 us, 20.7 sy, 0.0 ni, 75.7 id, 0.0 wa, 0.3 hi, 0.0
> si, 0.0 st
> %Cpu14 : 2.3 us, 33.6 sy, 0.0 ni, 59.7 id, 0.0 wa, 0.7 hi, 3.7
> si, 0.0 st
> %Cpu15 : 3.3 us, 19.7 sy, 0.0 ni, 76.3 id, 0.0 wa, 0.3 hi, 0.3
> si, 0.0 st
> %Cpu16 : 2.3 us, 34.0 sy, 0.0 ni, 58.7 id, 0.0 wa, 1.0 hi, 4.0
> si, 0.0 st
> %Cpu17 : 2.3 us, 21.5 sy, 0.0 ni, 75.8 id, 0.0 wa, 0.3 hi, 0.0
> si, 0.0 st
> %Cpu18 : 3.3 us, 34.8 sy, 0.0 ni, 57.2 id, 0.0 wa, 0.7 hi, 4.0
> si, 0.0 st
> %Cpu19 : 5.0 us, 19.3 sy, 0.0 ni, 75.1 id, 0.0 wa, 0.3 hi, 0.3
> si, 0.0 st
> %Cpu20 : 2.7 us, 35.3 sy, 0.0 ni, 60.0 id, 0.0 wa, 0.7 hi, 1.3
> si, 0.0 st
> %Cpu21 : 1.7 us, 20.5 sy, 0.0 ni, 77.2 id, 0.0 wa, 0.3 hi, 0.3
> si, 0.0 st
> %Cpu22 : 4.7 us, 32.4 sy, 0.0 ni, 58.5 id, 0.0 wa, 0.7 hi, 3.7
> si, 0.0 st
> %Cpu23 : 2.3 us, 19.0 sy, 0.0 ni, 78.3 id, 0.0 wa, 0.3 hi, 0.0
> si, 0.0 st
> MiB Mem : 64107.4 total, 46764.9 free, 11733.6 used, 5608.8
> buff/cache
> MiB Swap: 32248.0 total, 32248.0 free, 0.0 used. 51670.0
avail
> Mem
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+
> COMMAND
> 213370 knot 20 0 34.0g 9.6g 41784 S 644.9 15.3
1319:12
/usr/sbin/knotd
Thanks again for this great product.
Jonathan
--
--\--
Jonathan Hewlett
^Senior\ Systems\ Engineer\n$
CentralNic Group plc (LSE:CNIC)
https://www.centralnic.com <https://www.centralnic.com/>
Tel: +44.7548243020
CentralNic Group plc is a company registered in England and Wales with