There is some interesting data here:
https://lemariva.com/blog/2019/09/raspberry-pi-4b-preempt-rt-kernel-419y-performance-test
Apparently with the real-time patch a raspberry pi 4 will have a maximum 93us latency on a python(!) loop.
! = I might go with a compiled language myself
The stock kernel was not actually that bad at 301us. For many tasks, etc ..
A good general introduction here for anyone interested:
https://youtu.be/-wAo6bWh4jM?si=wFq4dtxrgf47FE8D
John Socks /
npub1p0…uex6h
2024-06-02 16:18:25
in reply to nevent1q…322j
Author Public Key
npub1p0mmwvqddz9pekjspatuf598ryt0r5g2acxsa44tlqv4ldkft4uspuex6hPublished at
2024-06-02 16:18:25Event JSON
{
"id": "9e63fb8a6a8416a3c92a7f90a9566824cdb1145eecfe4c5e7d7d5aa31ed4234a",
"pubkey": "0bf7b7300d688a1cda500f57c4d0a71916f1d10aee0d0ed6abf8195fb6c95d79",
"created_at": 1717345105,
"kind": 1,
"tags": [
[
"p",
"5f2dac217c35680cbce574baa0ae609373a356ef1de1ab2ed0a920abb9db3fff"
],
[
"proxy",
"https://socks.masto.host/@John/112547928812684629",
"web"
],
[
"p",
"0bf7b7300d688a1cda500f57c4d0a71916f1d10aee0d0ed6abf8195fb6c95d79"
],
[
"e",
"163d4f7e56abe87d0e96f867806eb0a0f84fff21d809ab7aa0264fea20daae7e",
"",
"root"
],
[
"e",
"02d0cd394bf8017e7272d798debeb5fbfa76e8c6b8635036dc19d7401a44add8",
"",
"reply"
],
[
"proxy",
"https://socks.masto.host/users/John/statuses/112547928812684629",
"activitypub"
],
[
"L",
"pink.momostr"
],
[
"l",
"pink.momostr.activitypub:https://socks.masto.host/users/John/statuses/112547928812684629",
"pink.momostr"
]
],
"content": "There is some interesting data here:\n\nhttps://lemariva.com/blog/2019/09/raspberry-pi-4b-preempt-rt-kernel-419y-performance-test\n\nApparently with the real-time patch a raspberry pi 4 will have a maximum 93us latency on a python(!) loop.\n\n! = I might go with a compiled language myself\n\nThe stock kernel was not actually that bad at 301us. For many tasks, etc ..\n\nA good general introduction here for anyone interested: \n\nhttps://youtu.be/-wAo6bWh4jM?si=wFq4dtxrgf47FE8D",
"sig": "b6ea82fbb2f391b0c1f075ea79fc2df6cdb180adb52a466f18dca1030b10f4fec79f258d441d9902d1a90359868289745b4fe33e041e0c155e5c83dee3b50fe2"
}