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Tell Linux to not use the local APIC timer
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I am trying to get Linux to use another timer in the hardware other than the local APIC timer. I am trying to use the local APIC timer in a kernel module I am writing since I need a high resolution timer, so Linux needs to use something else as its timer source.
I am setting the kernel parameters below in my Linux distribution (Ubuntu 16.04.4 LTS) but these parameters seem to be ignored as Linux is still using the local APIC timer. Do you have any ideas about how to fix this?
noapictimer clocksource=acpi_pm
I set the noapictimer parameter rather than nolapic_timer since I an x86_64 machine. I tried nolapic_timer anyway and it didn't work.
linux ubuntu x86
asked 3 mins ago
JackJack
181211
add a comment |
I am trying to get Linux to use another timer in the hardware other than the local APIC timer. I am trying to use the local APIC timer in a kernel module I am writing since I need a high resolution timer, so Linux needs to use something else as its timer source.
I am setting the kernel parameters below in my Linux distribution (Ubuntu 16.04.4 LTS) but these parameters seem to be ignored as Linux is still using the local APIC timer. Do you have any ideas about how to fix this?
noapictimer clocksource=acpi_pm
I set the noapictimer parameter rather than nolapic_timer since I an x86_64 machine. I tried nolapic_timer anyway and it didn't work.
linux ubuntu x86
asked 3 mins ago
JackJack
181211
add a comment |
I am trying to get Linux to use another timer in the hardware other than the local APIC timer. I am trying to use the local APIC timer in a kernel module I am writing since I need a high resolution timer, so Linux needs to use something else as its timer source.
I am setting the kernel parameters below in my Linux distribution (Ubuntu 16.04.4 LTS) but these parameters seem to be ignored as Linux is still using the local APIC timer. Do you have any ideas about how to fix this?
noapictimer clocksource=acpi_pm
I set the noapictimer parameter rather than nolapic_timer since I an x86_64 machine. I tried nolapic_timer anyway and it didn't work.
linux ubuntu x86
asked 3 mins ago
JackJack
181211
I am trying to get Linux to use another timer in the hardware other than the local APIC timer. I am trying to use the local APIC timer in a kernel module I am writing since I need a high resolution timer, so Linux needs to use something else as its timer source.
I am setting the kernel parameters below in my Linux distribution (Ubuntu 16.04.4 LTS) but these parameters seem to be ignored as Linux is still using the local APIC timer. Do you have any ideas about how to fix this?
noapictimer clocksource=acpi_pm
I set the noapictimer parameter rather than nolapic_timer since I an x86_64 machine. I tried nolapic_timer anyway and it didn't work.
linux ubuntu x86
linux ubuntu x86
asked 3 mins ago
JackJack
181211
asked 3 mins ago
JackJack
181211
asked 3 mins ago
JackJack
181211
asked 3 mins ago
JackJack
181211
asked 3 mins ago
JackJack
181211
181211
add a comment |
add a comment |
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