Robert Milkowski's blog

In the previous post I wrote about building Hangar Board, the flying-group app, with Codex doing the coding.

I've been having some more spare time recently.

On a low-latency Linux host, it is easy to assume that nohz_full (full dynticks / adaptive ticks) means "this CPU will not get ticks."

The /api/private/cli family is useful, but the “standard”/structured passthrough style (where the CLI maps onto /api/private/cli/<command-path> and parameters become fields/query params) only covers a subset of CLI commands and behaviours.

The -B option in bpftrace (none / line / full) now applies not only to terminal output but also when writing to files with -o.

Codex CLI Setup 1.

In early February 2023, I built a Slack bot to make OpenAI LLMs readily accessible within our company for experimentation.

$ torchrun --nproc_per_node 1 test2_text_completion.py \ --tokenizer_path tokenizer.model --max_seq_len 128 --max_batch_size 4 --ckpt_dir llama-2-7b/ \ --prompt "Hello everyone, I'm LLAMA-2" ...

The latest version (0.27.8) of the pypi/openai library now supports Azure/DALLE-2.

Recently I've been using bpftrace to trace some events across servers and it would be really useful if bpftrace allowed to use actual unix timestamps.

Although I appreciate Siri's ability to automate my home, there are times when it can be frustrating, such as when it replies with the annoying message "I found some web results, I sent them to your iPhone."

Many years ago I compared performance overhead of dtrace vs. truss on Solaris, in a microbenchmark.

Another blog entry saved as draft for a long time and waiting to be published... better late than never, so let's do it now.

It’s a blog entry I started writing over 3 years ago and never managed to actually finish/publish it, until now.

By default on OpenZFS/Linux the max amount of dirty data is capped at 4GB.

I've been playing with TrueNAS scale recently and while the BUI allows you to export/download ZFS wrapping key I wanted to know how to get the key manually.

How much can be gained when it comes to low latency and jitter by isolating CPUs on Linux?

I run into an interesting problem yesterday.

If you use StatsStore/Analytics on Solaris 11 you should check out the new GitHub oraclesolaris-contrib repository.

If you have a file system (nfs, etc.) mounted on-top of a directory and you need to see file permissions, ACLs, etc. of the underlying directory and not the mounted fs then: Solaris: # mount -F lofs -o nosub /some/path/ /mnt/fix Linux: # mount -B /some/pa…

NetApp's ONTAP 9.6 introduced new REST API along with a new python module netapp_ontap. #!

The nfsv4 provider provides some structures with component4 type which is defined as: typedef struct { uint_t utf8string_len; char *utf8string_val; } utf8string; typedef utf8string component4; So for example, to print NFSv4 file renames you have to do:

Linux measures load average differently than other OS'es.

Solaris 11.4 - setting zfs_arc_collect_check=0 via mdb (takes immediate effect) or via /etc/system makes ZFS to start feeding l2arc immediately.

The stop() action in DTrace stops an entire process... well, actually it doesn't.