nickva

%
% $ erl -name [email protected]
%
% $ erl -name [email protected]
% ([email protected])2> dist_perf:go('[email protected]').
%  started
%  Sent:953MB/s, Hist:{6,0,0,12,0,0,0,0,0,0,0} RHist:{0,0,0,0,0,0,0,0,0,97,0}
%  Sent:961MB/s, Hist:{1,0,0,12,0,0,0,0,0,0,0} RHist:{0,0,0,0,0,0,0,0,0,155,0}
%  Sent:953MB/s, Hist:{6,0,0,12,0,0,0,0,0,0,0} RHist:{0,0,0,0,0,0,0,0,0,202,0}
%

nickva

#!/usr/bin/env python3

import optparse
from dataclasses import dataclass
from collections import defaultdict


@dataclass
class Param:
    name: str

nickva

% ./erlperf \
  'runner(Unsorted) -> lists:sort(Unsorted).' \
   --init_runner '[{rand:uniform(), I} || I <- lists:seq(1,500)].' \
   'runner(Sorted) -> lists:sort(Sorted).' \
   --init_runner 'lists:sort([{rand:uniform(), I} || I <- lists:seq(1,500)]).'
Code                                              ||        QPS       Time     Rel
runner(Sorted) -> lists:sort(Sorted).              1      69223   14446 ns    100%
runner(Unsorted) -> lists:sort(Unsorted).          1       7158     140 us     10%

nickva

#!/bin/sh

http delete $DB/db
http put $DB/db'?q=4'

http put $DB/db/_design/d views:='{"v": {"map":"function(doc){emit(doc._id, 42);}"}}'

http put $DB/db/x a=b
http put $DB/db/y a=b
http put $DB/db/z a=b

nickva

#!/bin/bash

set -e

URL=http://adm:pass@localhost:15984
DB=${URL}/dbx
CFG=${URL}/_node/_local/_config

DOC=doc1
TMPFILE=/tmp/couch_largehex

nickva

#!/bin/bash

set -e

URL=http://adm:pass@localhost:15984
DB=${URL}/dbx
CFG=${URL}/_node/_local/_config

TMPFILE=/tmp/couch_largehex
DOCSIZE=100

nickva

#!/usr/bin/env python

# Uses CouchDB (pip install CouchDB)

import sys, couchdb, time, os, uuid, argparse, random, traceback
from multiprocessing.dummy import Pool as ThreadPool

DB_URLS = [
    'http://adm:pass@localhost:15984',
    'http://adm:pass@localhost:25984',

nickva

#!/usr/bin/env python

# still python2, sorry, old script
# pip install CouchDB
#  ./viewsize.py
# file      active    external  dtavg
# 18080120  17607050  14984706  45.973

import argparse
import sys

nickva

1>     application:start(luerl),
1>     F1 = "function(doc) emit('key1', doc) \n emit('key2', 'val2') end",
1>     F2 = "function(doc) emit('key3', 'val3') end",
1>     S0 = luerl_sandbox:init(),
1>     {_, S1} = luerl:do("emits = {} \n function emit(k, v) \n table.insert(emits, {k, v}) end", S0),
1>     {ok, C1, S2} = luerl:load("f = " ++ F1 ++ " \n f(...) \n return emits", S1),
1>     {ok, C2, S3} = luerl:load("f = " ++ F2 ++ " \n f(...) \n return emits", S2),
1>     {R1, _} = luerl:call_chunk(C1, [#{<<"_id">> => <<"1">>, <<"a">> => <<"b">>}], S3),
1>     {R2, _} = luerl:call_chunk(C2, [#{<<"_id">> => <<"1">>, <<"a">> => <<"b">>}], S3),
1>     #{<<"r1">> => R1, <<"r2">> => R2}.

nickva

xref:stop(s).
xref:start(s).
xref:set_default(s, [{verbose, false}, {warnings, false}]).
xref:add_release(s, "./src").
xref:add_release(s, code:lib_dir(), {name, otp}).

f().

IgnorePrefixes = [
    "hipe", "ibrowse", "hyper", "meck", "metrics", "parse_trans", "eunit_test", "hackney",