baryluk

OCaml

http://www-lipn.univ-paris13.fr/~loddo/funding/projet-hyper-learning.pdf
http://ocsigen.org/theproject

Oscigen - "Fresh air in Web Programming"
  http://ocsigen.org/

O'Browser http://ocsigen.org/obrowser/

baryluk

\subsection{Related work}
There is many releated works in field of JS and HTTP extensions
which tries to remove some of the current limitations
of JS, similary as erljs tries to handle them in one way.

\begin{itemize}
\item Erjang (\url{http://wiki.github.com/krestenkrab/erjang/})
  % http://www.javalimit.com/
 -- complete reimplementation of Erlang Virtual Machine to run on top of Java platform.

baryluk

Time: 3.133 ms
[local] baryluk@d=> EXPLAIN ANALYZE SELECT itemid FROM queue LIMIT 1;
┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│                                                    QUERY PLAN                                                     │
├───────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
│ Limit  (cost=0.00..0.01 rows=1 width=4) (actual time=0.040..0.041 rows=1 loops=1)                                 │
│   ->  Seq Scan on queue  (cost=0.00..1680786.04 rows=116492104 width=4) (actual time=0.039..0.039 rows=1 loops=1) │
│ Planning Time: 0.046 ms                                                                                           │
│ Execution Time: 0.050 ms                                                                                          │
└────────────────────────────────────────────────────────────────────────────────────────────────────────────────

baryluk

mydb=> SELECT psut.schemaname, psut.relname,
     to_char(psut.last_vacuum, 'YYYY-MM-DD HH24:MI') as last_vacuum,
     to_char(EXTRACT(EPOCH FROM (NOW() - psut.last_vacuum))/60, '999,999,990.0') || ' min ago' as last_vacuum_ago,
     vacuum_count,
     to_char(psut.last_autovacuum, 'YYYY-MM-DD HH24:MI') as last_autovacuum,
     to_char(EXTRACT(EPOCH FROM (NOW() - psut.last_autovacuum))/60, '999,999,990.0') || ' min ago' as last_autovacuum_ago,
     autovacuum_count,
     to_char(pg_class.reltuples, '9G999G999G999') AS n_tup,
     to_char(psut.n_dead_tup, '9G999G999G999') AS dead_tup,
     to_char(CAST(current_setting('autovacuum_vacuum_threshold') AS bigint)

baryluk

https://imgur.com/3mbDns1.png

PostgreSQL 11.2

Each pgbench run:

/usr/lib/postgresql/11/bin/pgbench --initialize --scale=10 --fillfactor=90 mydb  # basically drop old tables
/etc/init.d/postgresql stop
/etc/init.d/postgresql start
/usr/lib/postgresql/11/bin/pgbench --initialize --scale=1000 --fillfactor=90 mydb

baryluk

#!/usr/bin/env python3

# A simple script to build 64-bit and 32-bit Mesa and libdrm on amd64 Debian
# stable, Debian testing, Debian unstable, and possibly some Ubuntu versions
# with some tweaks.
#
# libdrm is build too, because often version right now in Debian sid and experimental
# is too old for current mesa git repo. Also it is nice to build debug
# versions of libdrm when troubleshooting some crashes and bugs.
#

baryluk

Blueprint book string

Collection of belt balancers. These balancers could originally be found on the wiki, now there are hosted here and on factorioprints.com.

Includes:

• 12 to 4 throughput unlimited (all belt colors)
• 12 to 6 (blue belt)
• 12 to 12 (all belt colors)
• 16 to 16 inline (blue belt)
• 16 to 16 throughput unlimited (all belt colors)

baryluk

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

baryluk

#!/bin/sh

# This script looks for new complete Factorio autosaves and archives
# them into current directory with date and time.
# Copyright: Witold Baryluk, 2019

if ! which inotifywait >/dev/null; then
  echo "Please install inotify-tools first. Debian example: sudo apt install inotify-tools"
  exit 1
fi

baryluk

#!/usr/bin/env python3

# Divides a full circle into equal angles.

import math

for N in range(2, 27):
  print(f"{N} divider:")
  for i in range(N):
    alpha = 360.0 * i / N