A colleague's computer is glitching in a peculiar way: under load, or especially as it's cooling down after a CPU load, interrupts for incoming Ethernet packets don't fire. Happens with both on-board and a PCIe NIC, but not with a USB NIC. I think this hints at a hardware issue, but is there a way to check if the hardware interrupt line glitches out, or Linux leaves the interrupt disabled for too long?
(hmmm, doesn't USB Ethernet work via polling?)
Alexander Monakov /
npub1cx…ap5yy
2023-04-18 09:16:28
Author Public Key
npub1cxa7ktjyctezrs4rc5m2jgznhf2a6jnv45ggd82v089lkndhckwq7ap5yyPublished at
2023-04-18 09:16:28Event JSON
{
"id": "59d01a34458fb18cb7d222240036fd69dfe4c5f918ac382b33b1afc77157474f",
"pubkey": "c1bbeb2e44c2f221c2a3c536a92053ba55dd4a6cad10869d4c79cbfb4db7c59c",
"created_at": 1681809388,
"kind": 1,
"tags": [
[
"mostr",
"https://mastodon.gamedev.place/users/amonakov/statuses/110219060112891894"
]
],
"content": "A colleague's computer is glitching in a peculiar way: under load, or especially as it's cooling down after a CPU load, interrupts for incoming Ethernet packets don't fire. Happens with both on-board and a PCIe NIC, but not with a USB NIC. I think this hints at a hardware issue, but is there a way to check if the hardware interrupt line glitches out, or Linux leaves the interrupt disabled for too long?\n\n(hmmm, doesn't USB Ethernet work via polling?)",
"sig": "eadb67a6ffa88b57211a1b3bfc9f446002b6cb92d0af250075d32f82a11bb492b304f4cd75dd09cb16ad7bb99ed20176c471a0d9faed1c66c940722126812fad"
}