girishkalele

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="/bind9.xsl"?>
<isc version="1.0">
  <bind>
    <statistics version="2.2">
      <views>
        <view>
          <name>_default</name>
          <zones>
            <zone>

girishkalele

(pprof) top1000
5.54s of 6.37s total (86.97%)
Dropped 138 nodes (cum <= 0.03s)
Showing top 100 nodes out of 195 (cum >= 3.41s)
      flat  flat%   sum%        cum   cum%
     1.46s 22.92% 22.92%      1.57s 24.65%  syscall.Syscall
     0.30s  4.71% 27.63%      0.30s  4.71%  runtime.futex
     0.30s  4.71% 32.34%      0.30s  4.71%  runtime.usleep
     0.28s  4.40% 36.73%      0.28s  4.40%  runtime.readvarint

girishkalele

Kubernetes 1.3 DNS Reliability and Performance Testing

Ran dnsbench in varying number of test containers to test DNS QPS and reliability. Worker nodes were n1-standard-2 GCE instances.

1 DNS Pod and 1 client pod

~ 1300 QPS

1 DNS Pod and 10 Client/Test Pods

girishkalele

#!/bin/bash

# SIGSTOP kube-proxy
kill -STOP `ps auxwww | grep kube-proxy | grep -v /bin/sh | grep -v grep | awk '{print $2}'`

export NODEID="3"
export CBRA="10.244.$NODEID.1"
export ETHA="10.128.0.$NODEID"

# GRE point to point tunnel to launder packets

girishkalele

FROM ubuntu
MAINTAINER Abhishek Shah "abshah@google.com"

ADD README.md README.md
#ADD Dockerfile Dockerfile

RUN apt-get -q update

#Install dependencies needed for building dnsperf
RUN apt-get install -y build-essential

girishkalele

https://github.com/kubernetes/kubernetes/issues/26364

E0607 14:09:38.968177  116580 proxysocket.go:218] ReadFrom failed, exiting ProxyLoop: read udp [::]:43857: use of closed network connection
E0607 14:09:39.218909  116580 proxysocket.go:292] WriteTo failed: write udp [::]:35756->127.0.0.1:38629: use of closed network connection
E0607 14:09:39.219070  116580 proxysocket.go:238] SetDeadline failed: set udp 127.0.0.1:49782: use of closed network connection
E0607 14:09:39.486255  116580 proxysocket.go:218] ReadFrom failed, exiting ProxyLoop: read udp [::]:35503: use of closed network connection
panic: test timed out after 2m0s

goroutine 114 [running]:
panic(0xc6b280, 0xc820216dd0)