Bug 163587 - [sched_ule] The ULE scheduler does not load in the fourth core processor i3
Summary: [sched_ule] The ULE scheduler does not load in the fourth core processor i3
Status: Closed FIXED
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: Unspecified
Hardware: Any Any
: Normal Affects Only Me
Assignee: Kubilay Kocak
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-12-24 14:50 UTC by vladislav V. Prodan
Modified: 2020-03-08 13:02 UTC (History)
0 users

See Also:

Attachments
cpu utilization graphs (42.65 KB, image/png)
2020-03-08 13:00 UTC, Kubilay Kocak 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description vladislav V. Prodan 2011-12-24 14:50:09 UTC 
http://i28.fastpic.ru/big/2011/1224/89/b0aa527ed051f352dc938d5c139be989.png

hw.machine: amd64
hw.model: Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz
hw.ncpu: 4

Dec 23 23:41:07 update kernel: FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
Dec 23 23:41:07 update kernel: FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 SMT threads
Dec 23 23:41:07 update kernel: cpu0 (BSP): APIC ID:  0
Dec 23 23:41:07 update kernel: cpu1 (AP): APIC ID:  1
Dec 23 23:41:07 update kernel: cpu2 (AP): APIC ID:  2
Dec 23 23:41:07 update kernel: cpu3 (AP): APIC ID:  3


Maybe the problem is in the ACPI and/or hyperthreading?
Comment 1 Yuri Pankov 2011-12-25 20:27:27 UTC 
> Dec 23 23:41:07 update kernel: cpu0 (BSP): APIC ID:  0
> Dec 23 23:41:07 update kernel: cpu1 (AP): APIC ID:  1
> Dec 23 23:41:07 update kernel: cpu2 (AP): APIC ID:  2
> Dec 23 23:41:07 update kernel: cpu3 (AP): APIC ID:  3

This looks like 4 CPUs (counted from 0) to me.


Yuri
Comment 2 Eitan Adler freebsd_committer freebsd_triage 2011-12-25 21:20:24 UTC 
State Changed
From-To: open->closed

Computers count from 0 :)
Comment 3 vladislav V. Prodan 2011-12-25 21:43:57 UTC 
25.12.2011 23:20, eadler@FreeBSD.org пиÑеÑ:
> Synopsis: [sched_ule] The ULE scheduler does not load in the fourth core processor i3
> 
> State-Changed-From-To: open->closed
> State-Changed-By: eadler
> State-Changed-When: Sun Dec 25 21:20:24 UTC 2011
> State-Changed-Why: 
> Computers count from 0 :)

That's right.
cpu3 fourth.
And the chart cpu3 NOT loaded.


-- 
Vladislav V. Prodan
System & Network Administrator
http://support.od.ua
+380 67 4584408, +380 99 4060508
VVP88-RIPE
Comment 4 Eitan Adler freebsd_committer freebsd_triage 2011-12-25 21:51:38 UTC 
State Changed
From-To: closed->open

I completely missed the chart - sorry. This still _may_ be user error - 
but I can't investigate right now
Comment 5 Eitan Adler freebsd_committer freebsd_triage 2017-12-31 07:59:10 UTC 
For bugs matching the following criteria:

Status: In Progress Changed: (is less than) 2014-06-01

Reset to default assignee and clear in-progress tags.

Mail being skipped
Comment 6 Kubilay Kocak freebsd_committer freebsd_triage 2020-03-08 13:00:46 UTC 
Created attachment 212258 [details]
cpu utilization graphs

^Triage 

- Amazingly the external graph is still available, attach to the issue acordingly
Comment 7 Kubilay Kocak freebsd_committer freebsd_triage 2020-03-08 13:02:09 UTC 
^Triage:

 - FreeBSD version unspecified, but likely now for an End-of-Life FreeBSD version.

@Reporter Please re-open this issue if it still reproducible in a currently supported version