Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)

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Sujet : Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)
De : ldo (at) *nospam* nz.invalid (Lawrence D'Oliveiro)
Groupes : comp.lang.python
Date : 16. Jun 2025, 02:14:34
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <102nr5q$17pa6$2@dont-email.me>
References : 1 2 3 4 5 6 7 8
User-Agent : Pan/0.162 (Pokrosvk)
On Sun, 15 Jun 2025 14:33:28 -0700, Paul Rubin wrote:

Lawrence D'Oliveiro <ldo@nz.invalid> writes:
>
Let's see how CPython holds up with a million OS threads running.
>
Linux can already run hundreds of thousands of processes/threads
 
To misquote Austin Powers, "one MILLLLLION threads".  Here Erlang does
it in less than 1GB of memory:
 
https://hauleth.dev/post/beam-process-memory-usage/

Just a note that Erlang dates from before the current state of CPU
architectures, where you have a 100:1 disparity between RAM-access speeds
and CPU register-access speeds.

In other words, you do not want to copy stuff between processes if you can
help it. With threads sharing common memory, that data can reside in
caches that multiple threads in the same process context can share without
copying.

Date Sujet#  Auteur
14 Jun 25 * Does Python Need Virtual Threads? (Posting On Python-List Prohibited)17Lawrence D'Oliveiro
14 Jun 25 +* Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)10Paul Rubin
15 Jun 25 i`* Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)9Lawrence D'Oliveiro
15 Jun 25 i `* Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)8Paul Rubin
15 Jun 25 i  `* Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)7Lawrence D'Oliveiro
15 Jun 25 i   `* Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)6Paul Rubin
15 Jun 25 i    `* Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)5Lawrence D'Oliveiro
15 Jun 25 i     `* Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)4Paul Rubin
16 Jun 25 i      `* Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)3Lawrence D'Oliveiro
16 Jun 25 i       `* Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)2Paul Rubin
17 Jun 25 i        `- Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)1Lawrence D'Oliveiro
14 Jun 25 `* Re: Does Python Need Virtual Threads? (Posting On Python-List Prohibited)6Mild Shock
23 Jun 25  `* async I/O via threads is extremly slow (Was: Does Python Need Virtual Threads?)5Mild Shock
23 Jun 25   `* What does stats = await asyncio.to_thread(os.stat, url) do? (Was async I/O via threads is extremly slow)4Mild Shock
23 Jun 25    `* What does the Async Detour usually cost (Was: What does stats = await asyncio.to_thread(os.stat, url) do?)3Mild Shock
23 Jun 25     `* Which Python System is affected? (Was: What does the Async Detour usually cost)2Mild Shock
24 Jun 25      `- Schachner, Joseph was the Big Moron [September 2021 16:30] (Was: Which Python System is affected?)1Mild Shock

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