On Intel processors
Linux linux-epq2.site 3.7.10-1.11-desktop #1 SMP PREEMPT Thu May 16 20:27:27 UTC 2013 (adf31bb) x86_64 x86_64 x86_64 GNU/Linux
to fetch the cache details:
cat /sys/devices/system/cpu/cpu*/cache/index*/
Where * is the respective cpu and cache index numbers
However, on ARM processors, this file/folder is not available. Is there a way to fetch these details?
Linux arndale 3.9.0-rc5+ #8 SMP Tue Apr 9 12:40:32 CEST 2013 armv7l GNU/Linux
From ARMv8A (64bit), it is possible to get cache info from CLIDR register. So cache info can be populated to /sys file system in Linux. Check detail from kernel/arch/arm64/kernel/cacheinfo.c.
Related
Besides checking /boot/config_xx and /proc/config.gz, how to confirm the preempt rt option is enabled or not for a specific Linux kernel?
I can login to the OS by SSH and I have the root permission.
At command line you can do uname -a, that should show something like this.
~$ uname -a
Linux raspberrypi 5.10.35-rt39-v7l+ #2 SMP PREEMPT_RT Thu May 13 02:26:47 PDT 2021 armv7l GNU/Linux
~$
Then you can look up at top of the ssh window and see the same thing (palm slap to forehead is optional):
symetrix#192.168.2.45's password:
Linux raspberrypi 5.10.35-rt39-v7l+ #2 SMP PREEMPT_RT Thu May 13 02:26:47 PDT 2021 armv7l
The programs included with the Debian GNU/Linux system are free software; ...
String PREEMPT_RT (rather than just PREEMPT or other such scheduler terms) tells what is up.
I installed FUEL in ubuntu 14.04.
Now I have to remove all and re-install, But I don't know how to un-install FUEL
uname
Linux 3.13.0-129-generic #178-Ubuntu SMP Fri Aug 11 12:48:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
Id Name State
---------------------------------------------------
3 fuel_master running
Could you please give to way how to remove FUEL in ubuntu?
I'm a newcomer for linux kernel development. This is second question about loading self-compiled kernel(current stable version 4.8.6). The error messages printed during booting are as below:
linux-05e3 mount[282]: mount: unknown filesystem type 'btrfs'
linux-05e3 systemd1: Dependency failed for Initrd Boot File System
linux-05e3 systemd1: Dependency failed for Reload Configuration
Actually the file system type of my root partition is 'btrfs', and it is no problem with kernel version 4.1.12.1-default.
My partition table is :
Result of uname -a is :
Linux linux-05e3 4.1.12-1-default #1 SMP PREEMPT Thu Oct 29 06:43:42
UTC 2015 (e24bad1) x86_64 x86_64 x86_64 GNU/Linux
The .config file is just copied from the one used for 4.1.12.1-default. And I've just ran make menuconfig with nothing modified after copying that file.
Can anyone give some useful tips to me. I really need a linux kernel development expert to give more instructions to me as a beginner. Thanks a million.
Running this version of Linux:
Linux trhtmxslsp01b02 2.6.32-358.14.1.el6.x86_64 #1 SMP Mon Jun 17 15:54:20 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux
I attempt to start a process but getting the following error
OpenShmMemory(): Cannot get shared memory ID, No such file or directory.
The app/process I'm running read the shared memory segment. I don't know how to troubleshoot this. This is a third party app. Can someone provide some guidance please?
I am trying to build openjdk from source and I am using "HOTSPOT_RELEASE_VERSION=20.0-b12" on openjdk6 on ubuntu 12.04.
It prompts:
This OS is not supported:" `uname -a`; exit 1;<br>
This OS is not supported: Linux joker-Inspiron-1545 3.2.0-35-generic-pae #55-Ubuntu SMP Wed Dec 5 18:04:39 UTC 2012 i686 i686 i386 GNU/Linux.
Can someone guide me on this please ?
change hotspot/make/linux/Makefile
SUPPORTED_OS_VERSION = 2.4% 2.5% 2.6% 2.7% 3%
An easier way than editing a file is to set the environment variable
DISABLE_HOTSPOT_OS_VERSION_CHECK=ok