[SOLVED] [split] Missing HPET clocksource option
|
Posts: 580
Threads: 29
Likes Received: 221 in 174 posts
Likes Given: 524
Joined: Jan 2019
Reputation:
178
(02-Jun-2022, 08:16 AM)agent_kith Wrote: (01-Jun-2022, 11:46 PM)hkphantomgtr Wrote: To further my findings, with the same CMOS setting, after changing to "TSC" clocksource, the latency becomes as good as before. huh.... so, with my new NUC, seems the CMOS setting doesn't affect the latency, but the choice of "clocksource". On some motherboards, I honestly can't discern any notable difference between HPET and TSC. IIRC need to disable hyper-threading.
I believe one is the older technology, and less "accurate" under certain conditions, and the other is meant to be a replacement. If memory serves, HPET is meant to be a replacement for TSC (could be the other way round though ).
(01-Jun-2022, 11:46 PM)hkphantomgtr Wrote: And last night, in a second thought, it's quite strange to me that, even in the default CMOS setting, including HPET is enabled, the Snakeoil OS can't use HPET, or the system/hardware can't use HPET with the CMOS default power management setting...... so where is the problem? HPET is disabled in the kernel. There's apparently some problems with HPET when in C10 mode (power saving mode), so the kernel disables the HPET timer (and falls back to TSC IIRC). So even though HPET is enabled in the system BIOS, the OS will refuse to use it.
If you're using custom kernels, power saving is disabled by default so HPET is always working. Using stock linux kernels, full suite of power saving is enabled hence you may get that missing HPET.
O... I c. Thanks for your explanation. Now I understand more.
BTW, I've already disabled hyper-threading. Have a nice day!
|
Messages In This Thread |
RE: Snakeoil Firmware - 1.2.5 (Gear Isolation U5) - by hkphantomgtr - 02-Jun-2022, 11:32 AM
|
Users browsing this thread: 1 Guest(s)
|
Latest Threads
|
Android Firefox issues with forum
Last Post: agent_kith
10-Jun-2025 04:45 PM
» Replies: 21
» Views: 2030
|
[split] Possible To Load Snakeoil OS in ...
Last Post: Snoopy8
09-Jun-2025 06:43 AM
» Replies: 14
» Views: 1498
|
Snakeoil 1.4.3 (High End U3)
Last Post: hkphantomgtr
05-Jun-2025 03:58 PM
» Replies: 67
» Views: 8852
|
Snakeoil with Ubuntu Desktop ?
Last Post: Snoopy8
02-Jun-2025 09:38 AM
» Replies: 8
» Views: 902
|
Add IR remote control using Flirc USB in...
Last Post: Snoopy8
31-May-2025 03:50 PM
» Replies: 5
» Views: 653
|
Work In Progress: 1.4.4
Last Post: hkphantomgtr
29-May-2025 11:44 PM
» Replies: 44
» Views: 4977
|
SQ difference - Raspberry Pi vs x86_64?
Last Post: Snoopy8
27-May-2025 02:16 PM
» Replies: 42
» Views: 5370
|
Snakeoil 1.4.0 (High End)
Last Post: aabman
25-May-2025 11:35 AM
» Replies: 93
» Views: 14806
|
new install issues
Last Post: carlodim
23-May-2025 09:56 AM
» Replies: 42
» Views: 4395
|
Is this project still alive?
Last Post: agent_kith
20-May-2025 03:11 PM
» Replies: 10
» Views: 1168
|
SnakeoilOS Mission Statement
|
Our mission is to create a free to use computer OS that is easy to install, intuitive to operate and play music that will connect and engage with you emotionally.
SnakeoilOS gives you the freedom to spend more time on listening, enjoying and exploring music. Wasting time on computers is now a thing of the past! Everything is constantly evolving/improving. Please check back often for updates.
If you like this project, do show your support with a small token donation. All donations collected will be used to run this website, and for purchasing new equipment for the project.
|
|
|