RE: DNS Capacity issue help -- Recursive Query -- it seems some packets are dropped by DNS

: DNS Capacity issue help -- Recursive Query -- it seems some packets are dropped by DNS On 10/04/2018 01:37, PENG, JUNAN wrote: > Hi, All > > I did recursive query capacity test. I used traffic generator to place 15K > QPS traffic to DNS 1 with FQDN1 (Note, FQDN1 can't be reso

Re: DNS Capacity issue help -- Recursive Query -- it seems some packets are dropped by DNS

On 10/04/2018 01:37, PENG, JUNAN wrote: > Hi, All > > I did recursive query capacity test. I used traffic generator to place 15K > QPS traffic to DNS 1 with FQDN1 (Note, FQDN1 can't be resolve by DNS1, it > need to forward it to DNS2 and TTL is set to 0) > > But during the test , I found lot

Re: DNS Capacity issue help -- Recursive Query -- it seems some packets are dropped by DNS

PENG, JUNAN wrote: > I need to start by saying that my load testing is very unscientific, so I can only give you a few handwaving hints... > I did recursive query capacity test. I used traffic generator to place > 15K QPS traffic to DNS 1 with FQDN1 (Note, FQDN1 can't be resolve by > DNS1, it n

Re: DNS Capacity issue help -- Recursive Query -- it seems some packets are dropped by DNS

Hello Michael, take care to increase the tcpdump buffers. Else it's tcpdump which loose trafic, not the dns server Have Fun. Greetings   Martin.Wismer. tcpdump option   -B 131072   helped in my case PS) this time with my other E-Mail Address On 10.04.18 02:37, PENG, JUNAN wrote: Hi, All I d

DNS Capacity issue help -- Recursive Query -- it seems some packets are dropped by DNS

Hi, All I did recursive query capacity test. I used traffic generator to place 15K QPS traffic to DNS 1 with FQDN1 (Note, FQDN1 can't be resolve by DNS1, it need to forward it to DNS2 and TTL is set to 0) But during the test , I found lots of failure , the successful rate is not high (85%).