jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

drewkerrigan

Execute the following command and make a note of X-Auth-Token. You will need this token to use in all subsequent commands.

curl -v -H 'X-Storage-User: system:root' -H 'X-Storage-Pass: testpass' http://10.80.83.68:8077/auth/v1.0
In the following command examples we are using 'AUTH_tk65840af9f6f74d1aaefac978cb8f0899' as the X-Auth-Token. Replace this with the appropriate token you obtained in the above step.

To create a container:

curl -X PUT -H 'X-Auth-Token: AUTH_tk65840af9f6f74d1aaefac978cb8f0899' http://10.80.83.68:8077/v1/AUTH_system/mycontainer
To list all containers in current account:

vishvananda

#!/usr/bin/env bash
SSH_KEYFILE=`tempfile`
SSL_KEYFILE=`tempfile`
if ! curl -s -f http://169.254.169.254/latest/meta-data/public-keys/0/openssh-key > $SSH_KEYFILE; then
  echo  "Failed to get key"
fi
cat $SSH_KEYFILE
PASSWORD=`openssl rand -base64 48 | tr -d '/+' | cut -c1-16`
sudo usermod ubuntu -p `openssl passwd -1 $PASSWORD`

reterVision

1.1 Linux process management

• process scheduling
• interrupt handling
• signaling
• process prioritization
• process switching
• process state
• process memory

hiroyuki-sato

#!/bin/bash

echo "============================"
echo "  pfcrx / pfctx parameters  "
echo "============================"

for i in /sys/module/mlx?_en ; do 
  m=$( basename $i )
  echo "INTERFACE: $m"
  RTX=$( cat $i/parameters/pfcrx )

jordanmkoncz

<?
/////////////////////
// slack2html
// by @levelsio
/////////////////////
//
/////////////////////
// WHAT DOES THIS DO?
/////////////////////
//