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Bug 1757085

Summary: [RHEL8] Backport Incremental processing patches
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Flavio Leitner <fleitner>
Component: ovn2.11Assignee: Open vSwitch development team <ovs-team>
Status: CLOSED ERRATA QA Contact: ovs-qe
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: FDP 19.ECC: ctrautma, fleitner, haili, jishi, kfida, kzhang, liali, nusiddiq, qding
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 1748102 Environment:
Last Closed: 2019-10-01 07:15:35 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1748102    
Bug Blocks:    

Comment 3 errata-xmlrpc 2019-10-01 07:15:35 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2019:2944
Comment 4 haidong li 2019-10-09 10:23:40 UTC 
verified on the latest version:ovn2.11-2.11.1-3.el8fdp.x86_64
steps:
1.run test case "regression_bz1695722" manually to send lots of dhcp packets
2.send GARP packets with scapy:
from scapy.all import *
ip='172.16.{y}.{x}'
mac='00:de:ad:01:00:{z}'
for i in range(10,99):
  for j in range(10,99):
    sendp(Ether(src=mac.format(z=j),dst="ff:ff:ff:ff:ff:ff")/ARP(op=1,hwsrc=mac.
format(z=j),hwdst="00:00:00:00:00:00",psrc=ip.format(x=i,y=j),pdst=ip.format(x=i
,y=j)),iface="eth1")


cpu usage is not high:
[root@dell-per730-19 ~]# top

top - 02:52:02 up  4:34,  2 users,  load average: 0.40, 0.10, 0.03
Tasks: 500 total,   1 running, 499 sleeping,   0 stopped,   0 zombie
%Cpu(s):   3.6/0.8     4[||||                                                                                         ]
MiB Mem :  64065.8 total,  55476.5 free,   2916.3 used,   5673.0 buff/cache
MiB Swap:  28560.0 total,  28560.0 free,      0.0 used.  60542.0 avail Mem 
add filter #1 (ignoring case) as: [!]FLD?VAL 
  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                            
 5256 qemu      20   0 7322920 912452  20960 S  39.7   1.4   3:00.16 qemu-kvm                                           
 4999 openvsw+  10 -10 2327972 122648  33044 S   9.4   0.2   2:58.87 ovs-vswitchd                                       
 5066 root      10 -10  267224   8760   3340 S   4.9   0.0   0:09.46 ovn-controller                                     
 4289 root      20   0 1826748  47732  31992 S   4.0   0.1   0:09.94 libvirtd                                           
 2440 root      20   0  151192   5316   4068 S   2.2   0.0   0:04.13 sshd                                               
 4084 root      20   0  246768  12492  10692 S   2.2   0.0   0:03.05 virsh                                              
 5413 qemu      20   0 6315264 588852  21216 S   2.2   0.9   1:52.25 qemu-kvm                                           
 4399 root      20   0   64268   5172   3920 R   0.9   0.0   1:05.78 top