mitogen VS Mosh

Ran into a variant of this when working on an IO loop, ended up with a little "Side" abstraction to wrap bidirectional/unidirectional descriptors to behave identically for the rest of the library. It's an annoying wart but pretty easy to avoid in userspace.. https://github.com/mitogen-hq/mitogen/blob/798032b9/mitogen/...

It's an odd piece of code for 'self-replicating', and I'd say is a bit of obscure project, but it has something amazing: alternative strategies for Ansible to speedup playbooks. It's rough, badly supported, requires patching to run on modern Ansible versions, and you are on your own if you use it, but it's so fast, that's it's impossible to drop. https://mitogen.networkgenomics.com/

I'm not sure how to interpret running 100 debug messages (https://github.com/ansible-community/ara/blob/master/tests/integration/benchmark_tasks.yaml) into real life performance. Mitogen's Benchmark used either 100 times a "hostname" command on the target machine (https://github.com/mitogen-hq/mitogen/blob/master/tests/ansible/bench/loop-100-items.yml) or running the DebOps project (https://github.com/debops/debops-playbooks/blob/master/playbooks/common.yml) for some sorta real-world module usage.

You can try to decrease the amount of failed connections w mitogen: https://github.com/mitogen-hq/mitogen/tags

It could use a Queue of some kind rather than just pushing onto a deque between threads [1]? Then it would idly wait for the results_thread_main to push results.

I guess that might be what Mitogen does, a faster Ansible strategy. https://github.com/mitogen-hq/mitogen/blob/master/docs/ansib...

[1] https://github.com/ansible/ansible/blob/becf9416736dc911d341...

Yes, I use ansible-base + manually installed collections and mitogen works with both fully qualified module names as well as the short version. Should work since last year actually: https://github.com/mitogen-hq/mitogen/releases/tag/v0.3.0-rc.0

dw did make a comment there, but its definitely got a disgruntled attitude.

If you haven’t already, and I know this doesn’t hold up for GUI emacs or vim, but consider running them through https://mosh.org/

FWIW, I wouldn't try to parse escape sequences "directly" from the input bytestream -- it's easy to end up with annoying bugs. Longer-term it's probably better to separate the logic e.g.:

- First step (for a UTF-8-input terminal emulator) means "lexing" the input bytestream as UTF-8 into a stream of USVs, which involves some subtleties (https://github.com/mobile-shell/mosh/blob/master/src/termina...).

- Second step is to run the DEC parser/FSM logic on the sequence of USVs, which is independent of the escape sequences (https://vt100.net/emu/dec_ansi_parser ; https://github.com/mobile-shell/mosh/blob/master/src/termina...).

- And then the third step is for the terminal to execute the "dispatch"/"execute"/etc. actions coming from the FSM, which is where the escape sequences and control chars get implemented (https://github.com/mobile-shell/mosh/blob/master/src/termina...).

Without this separation, it's easier to end up with bugs where, e.g., a UTF-8 sequence or an ANSI escape sequence is treated differently when it's split between multiple read() calls vs. all in one call.

Btw, you can use mosh to hide the latency of SSH. https://mosh.org/

I've been using Kitty's SSH features for as long as I can remember but I recently setup Mosh and I really like how it doesn't drop connections and supports roaming.

I am surprised many people write about ssh into a server. Mosh[1] feels more responsive and it also supports longer sessions.

[1] - https://mosh.org/

Also they support Mosh which I install on my servers. It's way better than plain ssh when you're on mobile networks and wifi, especially with connections that are unreliable or bandwidth-constrained.

I’ve recently been experimenting with MoSH (Mobile Shell). Basically think SSH but with UDP - so more resilient to shoddy network conditions, roaming access points, etc.

If it is not for production (e.g. running as a daemon or a server) and you only care about the development, another ad-hoc way is using screen/tmus-like software incl. byobu, and combine it with mosh.