>>> docker exec -it CONTAINERID /bin/sh
/app # telnet
/bin/sh: telnet: not found
/app # apk update
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/community/x86_64/APKINDEX.tar.gz
v3.7.0-243-gf26e75a186 [http://dl-cdn.alpinelinux.org/alpine/v3.7/main]
v3.7.0-229-g087f28e29d [http://dl-cdn.alpinelinux.org/alpine/v3.7/community]
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# Image neeeds to have ssh-client | |
image: docker:git | |
services: | |
- docker:dind | |
stages: | |
- staging | |
before_script: | |
- docker login -u gitlab-ci-token -p $CI_BUILD_TOKEN $CI_REGISTRY |
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#!/bin/bash | |
# ref-main: https://www.percona.com/doc/percona-server/5.5/installation/apt_repo.html | |
# ref-main: https://www.percona.com/doc/percona-server/5.6/tokudb/tokudb_installation.html | |
# ref: https://www.digitalocean.com/community/tutorials/how-to-install-a-fresh-percona-server-or-replace-mysql | |
if [ "$(id -u)" != "0" ]; then | |
echo "This script must be run as root" 1>&2 | |
exit 1 | |
fi | |
echo "Type your percona server root pasword:" |
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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 |