You can take the same source code package that Ubuntu uses to build jq, compile it again, and realize 90% better performance.
I use jq for processing GeoJSON files and other open data offered in JSON format. Today I am working with a 500MB GeoJSON file that contains the Alameda County Assessor's parcel map. I want to run a query that prints the city for every parcel worth more than a threshold amount. The program is
| import struct, time | |
| ## This experiment demonstrates that the claimed "hash" (that is not a hash) used | |
| ## by the L2 cache ECC debug feature used by Operation Triangulation is not secure, | |
| ## and can be trivially reverse engineered by anyone who owns one of the machines | |
| ## with the hardware (such as any M1 Mac), in seconds to days. Therefore, this proves | |
| ## that no "insider" access or leak is necessary to obtain this table, and that the | |
| ## attackers most likely did exactly the same thing. | |
| ## This is the "black box", i.e. the hardware: The table is not exposed to the caller. | |
| class BlackBox: |
| #!/usr/bin/env -S rust-script -t nightly | |
| #![feature(unix_sigpipe)] | |
| use std::cmp::max; | |
| const BASIC_COLORS: &[&str] = &[ | |
| "black", "red", "green", "yellow", "blue", "magenta", "cyan", "white", | |
| ]; | |
| fn title(t: &str) { |
| #btrfs benchmark for daily used desktop OS |
| # For recent versions of Ubuntu: | |
| - https://www.pugetsystems.com/labs/hpc/ubuntu-22-04-server-autoinstall-iso/ | |
| # Docs: | |
| - https://wiki.ubuntu.com/FoundationsTeam/AutomatedServerInstalls | |
| - https://wiki.ubuntu.com/FoundationsTeam/AutomatedServerInstalls/ConfigReference | |
| - https://cloudinit.readthedocs.io/en/latest/topics/datasources/nocloud.html | |
| - https://discourse.ubuntu.com/t/please-test-autoinstalls-for-20-04/15250/53 | |
| # Download ISO Installer: |
The goal of this document to cover all aspects of Kubernetes management, including how resources are expressed, constrained and accounted for. This started a way to ensure that alternate container runtime implementation like Kata containers will behave from a resource accounting and consumption point of view in the same manner as runc.
Location of the latest version of this document: https://gist.github.com/mcastelino/b8ce9a70b00ee56036dadd70ded53e9f
If you do not understand cgroups please refer to a quick primer at the bottom of this document. This will help you understand how the resource enforcement actually works.
| # recursive search for keys containing "string" stripping empty results | |
| jq '.. | objects | with_entries(select(.key | contains("ftp"))) | select(. != {})' | |
| # same, but output propper array | |
| jq '[ .. | objects | with_entries(select(.key | contains("ftp"))) | select(. != {}) ]' | |
| # or | |
| jq 'map( .. | objects | with_entries(select(.key | contains("ftp"))) | select(. != {}) )' | |
| # transform input from {type: a, amount: 1} to {a: 1} and sum all values by type | |
| jq '[ .[] | {(.type): .amount} ] | map(to_entries) | add | group_by(.key) | map({key: .[0].key, value: map(.value) | add}) | from_entries' |
| #!/bin/bash | |
| NODE_NAME=$1 | |
| ROLLOUT_CMD=$2 | |
| if [[ "$NODE_NAME" == "" ]]; then | |
| echo " | |
| USAGE: ./drain.sh <NODE_NAME> | |
| Drains a node from its Deployments/Stateful set pods. |
At Timeline Labs, we are continuously looking at new technologies to see what fits our needs. We are especially excited about Kubernetes from Google to manage our services atop Docker and CoreOS.
This process for installing Kubernetes on CoreOS uses Flannel for Kubernetes networking and should be cloud provider agnostic. To deploy the Kubernetes master functionality into the cluster, it uses fleetctl.
Thanks to Kelsey Hightower and his blog posts! They served as a great starting point for this process.
Add the cloud config below to your own and bring up your cluster using a CoreOS version with Docker 1.3 (currently v472.0.0 in alpha). During that initial boot, the download-kubernetes and download-flannel units will download binaries from the latest project release and use those.
