VirtualTam's bookmarks

1. High-Speed Packet Transmission in Go: From net.Dial to AF_XDP 2024-03-31

   tags: linux/kernel, linux/kernel/ebpf, network/bgp, network/packet, network/router, network/socket, programming/go

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   • Building an XDP (eXpress Data Path) based BGP peering router
   • atoonk/ping-aws-ips - ping all AWS IP addresses to see how many ec2 instances AWS has at any given time
   • atoonk/go-pktgen - Go Packet Generator
2. Fly.io - JIT Wireguard 2024-03-31

   tags: database/sqlite, network/http, network/udp, network/vpn/wireguard, programming/go

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   What if, instead of pushing [user] configs to gateways, we had the gateways pull them from our API on demand?

   • Linux Kernel - Introduction to Netlink
   • tqbf/wg_init.go - Wireguard initiator-responder identity example
3. Fixing a Bug in PyPy's Incremental GC 2024-03-28

   tags: debugging/gdb, linux/kernel, memory/garbage-collection, programming/python

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4. Linux perf examples 2024-01-13

   tags: command-line, linux, observability/tracing, performance, performance/profiling

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   • Perf Wiki
   • The Unofficial Linux Perf Events Web-Page
5. Rust std fs slower than Python!? No, it's hardware! 2023-11-30

   tags: amd, hardware/cpu, linux/kernel/ebpf, memory, observability/tracing, programming/python, programming/rust

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   • Xuanwo/when-i-find-rust-is-slow
   • Std::fs::read slow?
6. Improving RabbitMQ Performance with Flame Graphs | RabbitMQ - Blog 2022-09-03

   tags: linux/kernel/ebpf, message-broker/rabbitmq, performance, performance/profiling, programming/elixir, programming/erlang

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   • https://rabbitmq.github.io/rabbitmq-perf-test/stable/htmlsingle/
   • https://www.erlang.org/blog/my-otp-24-highlights/#beamasm---the-jit-compiler-for-erlang
   • https://github.com/kerl/kerl
   • https://github.com/taylor/kiex
   • https://github.com/parca-dev/parca
   • https://github.com/parca-dev/parca-agent
7. Fixing stutters in Papers Please on Linux 2022-08-28

   tags: audio, linux, linux/kernel/ebpf, observability/tracing, performance, programming/c

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8. watchexec: Executes commands in response to file modifications 2022-03-07

   tags: command-line, event, linux, linux/kernel, microsoft/windows, programming/rust

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   • https://github.com/watchexec/watchexec/tree/main/cli#usage-examples
9. Extreme HTTP Performance Tuning: 1.2M API req/s on a 4 vCPU EC2 Instance | talawah.io 2021-05-23

   tags: cloud/aws, linux, linux/kernel, linux/kernel/ebpf, network/http, performance, programming/c

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   • https://blog.packagecloud.io/eng/2016/06/22/monitoring-tuning-linux-networking-stack-receiving-data/
   • https://blog.packagecloud.io/eng/2016/10/11/monitoring-tuning-linux-networking-stack-receiving-data-illustrated/
   • https://blog.packagecloud.io/eng/2017/02/06/monitoring-tuning-linux-networking-stack-sending-data/
   • http://www.brendangregg.com/systems-performance-2nd-edition-book.html
10. TechEmpower Framework Benchmarks 2021-05-21

    tags: linux, linux/kernel, network/http, performance, programming, programming/json

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    • https://github.com/TechEmpower/FrameworkBenchmarks
    • https://github.com/TechEmpower/FrameworkBenchmarks/wiki/Project-Information-Framework-Tests-Overview
11. pixie-labs/pixie: Instant Kubernetes-Native Application Observability 2021-05-05

    tags: linux/container, linux/container/kubernetes, linux/kernel/ebpf, observability, observability/tracing

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    • https://pixielabs.ai/
12. 0x74696d | Debugging Python Containers in Production 2020-02-19

    tags: linux/container, linux/container/docker, linux/kernel/ebpf, observability/tracing, programming/c, programming/python

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13. Dynamic Tracing with DTrace & SystemTap 2020-02-19

    tags: dtrace, linux, linux/kernel, linux/kernel/ebpf, observability/tracing, performance, systemtap

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14. How to turn any syscall into an event: Introducing eBPF Kernel probes | Yet another enthusiast blog! 2020-02-11

    tags: linux, linux/kernel, linux/kernel/ebpf, observability/tracing, performance

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15. Frida • A world-class dynamic instrumentation framework | Inject JavaScript to explore native apps on Windows, macOS, GNU/Linux, iOS, Android, and QNX 2020-01-30

    tags: debugging, linux/kernel/ebpf, observability/tracing, program, ptrace

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    • https://github.com/frida/frida
    • https://frida.re/docs/home/
16. distri: 20x faster initramfs (initrd) from scratch 2020-01-30

    tags: boot, linux, linux/kernel, programming/go, programming/shell

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    • https://github.com/distr1/distri/blob/master/cmd/distri/initrd.go
17. PHP-tracing-tool: Command line tool written in python - based on the BCC toolkit (eBPF) - for PHP code monitoring 2019-10-07

    tags: bcc, linux, linux/kernel, linux/kernel/ebpf, observability/tracing, programming/php, programming/python

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    • https://bearstech.com/societe/blog/dissequer-un-php-en-production-avec-ebpf-a-la-recherche-des-io-perdus/
18. AWS | Enable Enhanced Networking with Elastic Network Adapters for vintage OS AMIs 2019-09-17

    tags: chroot, cloud/aws, linux, linux/debian, linux/kernel, virtualization, xen

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    Paravirtual (PV) to Hardware Virtual Machine (HVM):

    • https://stackoverflow.com/questions/24330721/amazon-ec2-how-to-convert-an-existing-pv-ami-to-hvm

    ENA support:

    • https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking-ena.html
    • https://forums.aws.amazon.com/thread.jspa?threadID=166135
    • https://aws.amazon.com/premiumsupport/knowledge-center/boot-error-linux-m5-c5/
    • https://bugs.centos.org/view.php?id=14107
    • https://ygrene.tech/how-to-enable-ena-support-for-aws-amis-in-5-steps-and-make-your-bamboo-remote-jobs-really-fast-f2a4254a9955

    Build Debian AMIs from scratch:

    • https://bootstrap-vz.readthedocs.io/en/master/
    • https://github.com/andsens/bootstrap-vz
    • https://www.slideshare.net/JamesBromberger/debian-cloud-building-the-debian-amis
    • https://blog.james.rcpt.to/2012/12/06/official-debian-images-on-amazon-web-services-ec2/

    Squeeze:

    • https://lists.debian.org/debian-cloud/2013/02/msg00023.html

    Wheezy:

    • https://lists.debian.org/debian-cloud/2014/10/msg00009.html
    • https://lists.debian.org/debian-cloud/2014/11/msg00000.html

    Boot to chroot:

    • https://unix.stackexchange.com/questions/85714/boot-into-a-chroot
    • https://wiki.debian.org/chroot
    • https://wiki.debian.org/Debootstrap
    • https://superuser.com/questions/384437/booting-linux-system-from-chroot-is-there-a-better-way-to-do-this/384457#384457
    • https://github.com/lemonsqueeze/boot-chroot
19. NAXSI - an open-source, high performance, low rules maintenance WAF for NGINX 2019-09-17

    tags: linux/kernel, network, network/http, network/http-server/nginx, network/proxy, security

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    • https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-naxsi-on-ubuntu-14-04
20. BPF Performance Tools (Book) 2019-07-29

    tags: linux, linux/kernel, linux/kernel/ebpf, observability, observability/tracing, performance

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