bahmanm

cross-posted from: https://lemmy.ml/post/4027414

TIL that I can use Perl's Benchmark module to time and compare the performance of different commands in an OS-agnostic way, ie as long as Perl is installed.

For example, to benchmark curl, wget and httpie you could simply run:

$ perl -MBenchmark=:all \
     -E '$cmd_wget    = sub { system("wget  https://google.com > /dev/null 2>&1") };' \
     -E '$cmd_curl    = sub { system("curl  https://google.com > /dev/null 2>&1") };' \
     -E '$cmd_httpie  = sub { system("https https://google.com > /dev/null 2>&1") };' \
     -E '$timeresult  = timethese(15, { "wget" => $cmd_wget, "curl" => $cmd_curl, "httpie" => $cmd_httpie });' \
     -E 'cmpthese($timeresult)'

which on my old T530 produces:

Benchmark: timing 15 iterations of curl, httpie, wget...

      curl:  2 wallclock secs ( 0.00 usr  0.00 sys +  0.42 cusr  0.11 csys =  0.53 CPU) @ 28.30/s (n=15)
    httpie:  8 wallclock secs ( 0.00 usr  0.01 sys +  4.63 cusr  0.79 csys =  5.43 CPU) @  2.76/s (n=15)
      wget:  3 wallclock secs ( 0.00 usr  0.00 sys +  0.53 cusr  0.19 csys =  0.72 CPU) @ 20.83/s (n=15)
    
         Rate httpie   wget   curl
httpie 2.76/s     --   -87%   -90%
wget   20.8/s   654%     --   -26%
curl   28.3/s   925%    36%     --

Very handy indeed ❤

TIL that I can use Perl's Benchmark module to time and compare the performance of different commands in an OS-agnostic way, ie as long as Perl is installed.

For example, to benchmark curl, wget and httpie you could simply run:

$ perl -MBenchmark=:all \
     -E '$cmd_wget    = sub { system("wget  https://google.com > /dev/null 2>&1") };' \
     -E '$cmd_curl    = sub { system("curl  https://google.com > /dev/null 2>&1") };' \
     -E '$cmd_httpie  = sub { system("https https://google.com > /dev/null 2>&1") };' \
     -E '$timeresult  = timethese(15, { "wget" => $cmd_wget, "curl" => $cmd_curl, "httpie" => $cmd_httpie });' \
     -E 'cmpthese($timeresult)'

which on my old T530 produces:

Benchmark: timing 15 iterations of curl, httpie, wget...

      curl:  2 wallclock secs ( 0.00 usr  0.00 sys +  0.42 cusr  0.11 csys =  0.53 CPU) @ 28.30/s (n=15)
    httpie:  8 wallclock secs ( 0.00 usr  0.01 sys +  4.63 cusr  0.79 csys =  5.43 CPU) @  2.76/s (n=15)
      wget:  3 wallclock secs ( 0.00 usr  0.00 sys +  0.53 cusr  0.19 csys =  0.72 CPU) @ 20.83/s (n=15)
    
         Rate httpie   wget   curl
httpie 2.76/s     --   -87%   -90%
wget   20.8/s   654%     --   -26%
curl   28.3/s   925%    36%     --

Very handy indeed ❤

cross-posted from: https://lemmy.ml/post/3972223

I come from a generally dry country and the concepts of drought & conserving the water are not new to me.

One of the things that have stunned/upset me ever since I set foot in Canada (both east & west coasts) is watching people washing their cars using a hose and tap water:

For starters, tap water is not cheap. Moreover, one definitely doesn't need sanitised water to wash their car.

But more importantly, washing cars using a hose at home is very inefficient compared to taking it to an automatic car wash: something which is programmed to make every second of operation and every litre of water count (that's how they make a margin after all.)

TBH I'm not sure about the real impact this has on our water reserves & if there have been any studies on similar water-inefficiencies but I have yet to watch/read/hear a advertisement, newspaper column or radio talk on this topic: these dry seasons take extra measures as, IMHO, they're going to stay w/ us for the foreseeable future.

Am I being too sensitive about water shortage b/c of my background? What are your thoughts?

Image from Wikipedia

cross-posted from: https://lemmy.ml/post/3919105

bmakelib is a minimalist standard library for writing Makefiles.

What do you think about being able to easily generate µsecond precision timestamps in a Makefile?

Please take a second to look at https://github.com/bahmanm/bmakelib/issues/42 & share your thoughts/emojis 🙏

bmakelib is a minimalist standard library for writing Makefiles.

What do you think about being able to easily generate µsecond precision timestamps in a Makefile?

Please take a second to look at https://github.com/bahmanm/bmakelib/issues/42 & share your thoughts/emojis 🙏

A good introduction to memory management in PG. The material on pg_backend_memory_contexts eas totally new to me.

⚠ My FIDE rating is ~1300. Take everything I say w/ a grain of salt 😂

I watched Carlsen's games for the first time back in 2016 during his match w/ Karjakin.

I have been following his performance ever since and I've never been able to shake off the feeling, even for a second, that he is to modern chess what Dr. Lasker used to be to chess during his long chess career: "never losing his head" as Tartakower once said.

Match after match, Carlsen has proven to be a head and shoulder above his contemporaries and irrespective of the style of his opponent (aggressive, defensive, slow, fast, tactical, ...) he's always been able to pull it off no matter how tense the position/match got.

Just like Dr. Lasker, he seems to have developed an understanding of the game and style which is not well understood by his opponents.

IMO the chess world is not going to see a new "best" player, until either he loses interest in the game (like Dr. Lasker did) or a new generation of players arise and are able to challenge him beyond what he's been through.

Perhaps Pragg or Firouzja in a decade or so w/ more experience and stronger nerves can do that?

After I restarted my Emacs daemon (after a couple of months uptime), I started getting plenty of errors like below during the initialisation and most of my keys stopped working:

Key sequence C-c [...] starts with non-prefix key C-c

A quick search indicated that error means the "non-prefix key" is already used. In my case, it was C-c which sounded quite weird.

I ran ag on ~/.emacs.d & luckily was able to find the culprit after a few minutes.

I had this somewhere in my init files:

(global-set-key (kbd "C-c 
s a") #'avy-goto-char-2)

Note the newline after C-c - I must have pressed ENTER by mistake and saved the file w/o paying attention.

I thought I'd share this as this may save some fellow Emacs denizens a few minutes confusing minutes.

My immediate reaction was to blame it on the upgrade to 29.1 🤦‍♂️ The morale of the story is find the blame w/i and not in Emacs!

Found these 2 at the local grocery store for $2 each. Admittedly very cheap plastic but still make a pleasant sight to see on my desk 😀

cross-posted from: https://lemmy.ml/post/3758187

It's not the 1st time a language/tool will be lost to the annals of the job market, eg VB6 or FoxPro. Though previously all such cases used to happen gradually, giving most people enough time to adapt to the changes.

I wonder what's it going to be like this time now that the machine, w/ the help of humans of course, can accomplish an otherwise multi-month risky corporate project much faster? What happens to all those COBOL developer jobs?

Pray share your thoughts, esp if you're a COBOL professional and have more context around the implication of this announcement 🙏

It's not the 1st time a language/tool will be lost to the annals of the job market, eg VB6 or FoxPro. Though previously all such cases used to happen gradually, giving most people enough time to adapt to the changes.

I wonder what's it going to be like this time now that the machine, w/ the help of humans of course, can accomplish an otherwise multi-month risky corporate project much faster? What happens to all those COBOL developer jobs?

Pray share your thoughts, esp if you're a COBOL professional and have more context around the implication of this announcement 🙏

cross-posted from: https://lemmy.ml/post/3731915

Over the past 2 decades I've been trying various medications to help me w/ my long running major depression & crippling ADHD. And none have seemed to work.

Recently, the doctor I'm working w/ nowadays suggested that she's practically running out of options to offer me & that I should take a pharmacogenetics test to help her figure out what should she prescribe.

I took the (expensive) test and the results were eye-opening! The results came out a couple of weeks later w/ a detailed list of some few hundreds medications of various sorts (from pain killers to blood pressure control) along w/ their efficacy for my case. The physician's version also included a list of suggestions and alternatives for each medicine.

In my particular case, it essentially indicated that any medication that I had tried before was supposed to be either useless or to have limited impact on my body. That part is true.

Please note that I've only started a new set of prescriptions since a couple of weeks ago and as such can't really vouch for the accuracy of the suggestions.

I struggled a lot w/ myself to post something this personal. But I thought maybe there are people out there who've got no idea such tests exist and it might turn out to be helpful to some.