Hi All,
I am seeing that in OVS 2.4 and ovs 2.5 Bulk flow deletion is taking
huge time more than (30 mins) compared to ovs 2.3 where it used to
take 1-2 secs .
Below are steps which I am following to reproduce the issue :
1. Add 200K Flows
####### Sample Script to add 200 K Flows ######
echo "Adding 200K Flows"
date
for v in {1..20}
do
for i in {1..250}
do
for j in {1..40}
do
ovs-ofctl add-flow br-int
hard_timeout=0,idle_timeout=0,priority=10,ip,cookie=0x5c38cfa3a668$v,table=0,dl_dst=fa:16:3e:af:69:a3,dl_vlan=$v,nw_src=9.16.$i.$j/32,in_port=1,actions=output:1
done
done
done
date
echo "Flows are added"
echo "Dump-Flows"
ovs-ofctl dump-flows br-int |wc
date
######## End Script ####
2. Try to delete 10 k Flows ()
ovs-ofctl del-flows br-int dl_vlan=1
3. Above command gets executed successfully , but looks like deletion
keep on happening in background .
4. It takes more than 30 mins to complete it , during this period
if anyone executes any of below command it hangs without any output .
ovs-ofctl dump-flows br-int
or
ovs-ofctl show br-int
5. This issue is not seen in ovs 2.3
Is there any solution for this issue ?
Thanks & Regards,
Alok
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