coderplay’s gists

coderplay / config.json

Created April 18, 2020 20:16

OCI bundle for docker run --runtime kata-runtime --device=/var/run/kata-containers/vhost-user/block/devices/vhostblk0:/dev/vda -it ubuntu /bin/bash

coderplay / FaultInjectionRunner.java

Created October 26, 2019 07:32

Fault Injection based on RandomizedRunner


	import com.carrotsearch.randomizedtesting.RandomizedRunner;
	import org.jboss.byteman.contrib.bmunit.BMRule;
	import org.jboss.byteman.contrib.bmunit.BMRules;
	import org.jboss.byteman.contrib.bmunit.BMRunnerUtil;
	import org.jboss.byteman.contrib.bmunit.BMScript;
	import org.jboss.byteman.contrib.bmunit.BMScripts;
	import org.jboss.byteman.contrib.bmunit.BMUnit;
	import org.jboss.byteman.contrib.bmunit.BMUnitConfig;
	import org.jboss.byteman.contrib.bmunit.BMUnitConfigState;

coderplay / bpf

Created June 2, 2018 17:14

bpf playground


	$ sudo /usr/local/sbin/ply -D -c 'kprobe:vfs_read{ printf("%v: %v\n", comm(), arg(0)); }'
	symtable:
	ast:
	`-> <script> (type:script/none size:0x0 loc:nowhere)
	`-> kprobe:vfs_read (type:probe/none size:0x0 loc:nowhere)
	`-> <auto>.printf (type:call/none size:0x0 loc:reg/0)
	\|-> "%v: %v\n"(type:str/str size:0x8 loc:virtual)
	`-> <rec> (type:rec/none size:0x20 loc:stack/-0x20)
	\|-> 0 (type:int/int size:0x8 loc:stack/-0x20)

coderplay / s3-download-blocking

Last active January 27, 2018 06:07

	pool-1-thread-126" #152 prio=5 os_prio=0 tid=0x00007f34ec6ae800 nid=0xc03f waiting on condition [0x00007f3416be9000]
	java.lang.Thread.State: TIMED_WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for <0x0000000080451948> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
	at java.util.concurrent.locks.LockSupport.parkUntil(LockSupport.java:256)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitUntil(AbstractQueuedSynchronizer.java:2120)
	at org.apache.http.pool.AbstractConnPool.getPoolEntryBlocking(AbstractConnPool.java:378)
	at org.apache.http.pool.AbstractConnPool.access$200(AbstractConnPool.java:69)
	at org.apache.http.pool.AbstractConnPool$2.get(AbstractConnPool.java:246)
	- locked <0x00000005d0231ab8> (a org.apache.http.pool.AbstractConnPool$2)

coderplay / python-bytecode

Created January 1, 2018 18:56

python bytecode

	bash-3.2$ python
	Python 2.7.10 (default, Feb 6 2017, 23:53:20)
	[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.34)] on darwin
	Type "help", "copyright", "credits" or "license" for more information.
	>>> def func(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12):
	def func(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12):
	... return arg1+arg2+arg3+arg4+arg5+arg6+arg7+arg8+arg9+arg10+arg11+arg12
	return arg1+arg2+arg3+arg4+arg5+arg6+arg7+arg8+arg9+arg10+arg11+arg12
	...

coderplay / frequent-young-g1-gc.md

Last active April 11, 2018 15:56

user/kernel space c++ method tracing

frequent YGC.

# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 535K of event 'cycles'

coderplay / .bash_profile

Last active January 21, 2017 18:30

Intellij Configurations, good for Emacs guys

	export PATH=/usr/local/sbin:$PATH

	export JAVA_HOME="$(/usr/libexec/java_home -v 1.8)"

	# GOLANG
	export GOPATH=$HOME/software/gopath
	export PATH=$PATH:$GOPATH/bin

	# GNU TAR
	export PATH=/usr/local/opt/gnu-tar/libexec/gnubin:$PATH

coderplay / build-etcd

Last active April 1, 2021 09:12

Setup a Raspberry PI Kubernetes Cluster

	#!/usr/bin/env bash

	set -e

	VER=$1
	PROJ="etcd"

	if [ -z "$1" ]; then
	echo "Usage: ${0} VERSION" >> /dev/stderr
	exit 255

coderplay / .ansible.cfg

Last active August 3, 2016 18:37

My Ansible Configurations

	[defaults]
	timeout=20
	forks=20
	remote_user=ubuntu
	jinja2_extensions=jinja2.ext.do,jinja2.ext.i18n
	#

	[ssh_connection]
	# scp_if_ssh=True
	# pipelining=True

coderplay / sort-perf.txt

Created April 11, 2016 07:15

	66.69% java [kernel.kallsyms] [k] _raw_spin_unlock_irqrestore
	\|
	--- _raw_spin_unlock_irqrestore
	\|
	\|--99.96%-- compaction_alloc
	\| migrate_pages
	\| compact_zone
	\| try_to_compact_pages
	\| __alloc_pages_direct_compact
	\| __alloc_pages_nodemask

Min Zhou coderplay