I noticed this week end that my computer (AMD 64x2) was severely
dragging its feet when multi-tasking. The system monitor only shows one
CPU, so I trolled /var/log/messages to see what's happening. This short
segment seems relevant:
Mar 6 18:10:21 dharma kernel: [ 0.000000] ACPI: LAPIC (acpi_id[0x00]
lapic_id[0x00] enabled)
Mar 6 18:10:21 dharma kernel: [ 0.000000] Processor #0 15:11 APIC version 16
Mar 6 18:10:21 dharma kernel: [ 0.000000] ACPI: LAPIC (acpi_id[0x01]
lapic_id[0x01] enabled)
Mar 6 18:10:21 dharma kernel: [ 0.000000] Processor #1 15:11 APIC version 16
Mar 6 18:10:21 dharma kernel: [ 0.000000] WARNING: NR_CPUS limit of 1
reached. Processor ignored.
uname -a gives Linux dharma 2.6.24-11-386 #1 Fri Feb 29 21:28:00 UTC
2008 i686 GNU/Linux
I suppose I could fix this by forcing a more appropriate kernel package,
the point being, I never had to.
** Also affects: linux-source-2.6.24 (Ubuntu)
Importance: Undecided
Status: New
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AMD 64x2 Dual Core Processor - Seen as single processor
https://bugs.launchpad.net/bugs/127398
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