ktsaou

/*
 
  Save as: proc-net-tcp-test.c

  Compile with:

    gcc -O2 -o proc-net-tcp-test proc-net-tcp-test.c -lmnl

  Run with:

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#!/usr/bin/env bash

# The directory to save the generated certificates (and everything about this certificate authority).
# This is only used on the node generating the certificates (usually on the journals server).
DIR="/etc/ssl/systemd-journal-remote"

# The journals centralization server name (the CN of the server certificate).
SERVER="server-hostname"

# All the DNS names or IPs this server is reachable at (the certificate will include them).

ktsaou

// SPDX-License-Identifier: GPL-3.0-or-later

#include "july.h"

#define JULYL_MIN_ENTRIES 10

struct JulyL_item {
    Word_t index;
    void *value;
};

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//
// compile with:
// gcc -O2 -o spinlock spinlock.c -lpthread && ./spinlock
//
// verification and spinlock stats can be enabled with this:
// gcc -O2 -DSPINLOCK_VERIFY_AND_STATS=1 -o spinlock spinlock.c && ./spinlock

#define _GNU_SOURCE
#define __USE_GNU

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(gdb) taas bt

Thread 463 (Thread 0x7fd5d4952700 (LWP 272185) "DBENGINE"):
#0  futex_abstimed_wait (private=0, abstime=0x0, clockid=0, expected=3, futex_word=<optimized out>) at ../sysdeps/nptl/futex-internal.h:287
#1  __pthread_rwlock_rdlock_full (abstime=0x0, clockid=0, rwlock=0x5615817057c8) at pthread_rwlock_common.c:460
#2  __GI___pthread_rwlock_rdlock (rwlock=0x5615817057c8) at pthread_rwlock_rdlock.c:27
#3  0x00007fd6d2e746e9 in uv_rwlock_rdlock () from target:/lib/x86_64-linux-gnu/libuv.so.1
#4  0x000056157bd0b1a6 in get_descriptor (page_index=0x5615817057a0, start_time_s=1668212224) at database/engine/rrdengine.c:763
#5  0x000056157bd0b24d in try_to_remove_v2_descriptor (ctx=0x56157c34fcc0 <multidb_ctx_storage_tier0>, page_index=0x5615817057a0, start_time_s=1668212224, expired=false) at database/engine/rrdengine.c:772
#6  0x000056157bd0b4b8 in check_journal_file (journalfile=0x5615829dda10) at database/engine/rrdengine.c:830

ktsaou

#!/usr/bin/env bash

# Stress With Curl
# Run multiple curl worker to stress a web server
# Real-time statistics at a Netdata server
#
# To use, you need:
#   - curl
#   - The nc command from the openbsd-netcat package
#   - Netdata

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$ ./compile-gvpe/build-gvpe-linux-static.sh
ME  : build-gvpe-linux-static.sh
DIR : /home/costa/src/netdata-demo-site.git/gvpe/compile-gvpe
 
/home/costa/src/netdata-demo-site.git/gvpe/compile-gvpe > sudo docker run -a stdin -a stdout -a stderr -i -t -v /home/costa/src/netdata-demo-site.git/gvpe/compile-gvpe:/tmp/mapped:rw alpine:edge /bin/sh /tmp/mapped/build-gvpe-linux-static.sh inside-container
 
/ > apk update
fetch https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz
v3.15.0_alpha20210804-4905-ga7f55994b5 [https://dl-cdn.alpinelinux.org/alpine/edge/main]

ktsaou

# netdata contributors license agreement

**Thank you for contributing to netdata!**

This agreement is part of the legal framework of the open-source ecosystem
that adds some red tape, but protects both the contributor and the project.

To understand why this is needed, please read [a well-written chapter from
Karl Fogel’s Producing Open Source Software on CLAs](http://producingoss.com/en/copyright-assignment.html).

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#!/usr/bin/env bash

program="${1}"
append=


# -----------------------------------------------------------------------------
# HiDPI decision

primary_found="no"

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#!/bin/sh

base="/sys/devices/system/cpu/cpufreq/policy0/"

ME="${0}"
SCALING_DRIVER="$(<${base}/scaling_driver)"
SCALING_GOVERNOR="$(<${base}/scaling_governor)"
AC_ONLINE=$(</sys/class/power_supply/AC/online)

# install this script in udev