ARM64 Linux Performance Tuning

This is personal notebook for ARM64 performance tuning.

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Intel Coffee Lake Ubuntu Linux 速度太慢

這個也是怪自己,最近因為 Windows VM 不知道為什麼速度變很慢,所以改用 Linux 跑 VM ,雖然 Linux 下 VM 速度比 Windows 快,但是整體的感覺還是慢.本來以為是我的 i5-9600k VM 表現不好,但是看著 CPU utilization 感覺還是怪

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Windows 10 存取 Ubuntu Samba 問題

不知道是不是公司控管電腦的問題,我公司的電腦一直沒辦法存取 Samba 的目錄

今天終於下定決定找一找可能是什麼問題

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[Gentoo][ARM64] Compile qtwebengine fail

If CPU number is too much, compile qtwebengine will fail, seems ninja compile issues.

it better to reduce CPU number under 8, batter number is 4 or 6.

just put MAKEOPTS=”-j 4″ on your /etc/portage/make.conf

It can be roll back after compile qtwebengine.

modify package.env can support special MAKEOPTS command on some packages.
ex:

echo "dev-qt/qtwebengine lowcpu.conf" | sudo tee -a /etc/portage/package.env
mkdir -p /etc/portage/env
echo "MAKEOPTS=\"-j4\"" | sudo tee /etc/portage/env/lowcpu.conf

ref.
[SOLVED] emerging qtwebengine-5.7.1
Memory problems on QtWebEngine build

htop more column for mass CPUs

htop can support multiple columns in one screen, just press F2 enter setup mode, and change left column and right column to CPUs (1-4/8) [Bar] and CPUs (5-8/8) [Bar]

htoprc , put it on /etc/htoprc or ~/.config/htop/htoprc

# Beware! This file is rewritten by htop when settings are changed in the interface.
# The parser is also very primitive, and not human-friendly.
fields=0 48 17 18 38 39 40 2 46 47 49 1
sort_key=1
sort_direction=1
hide_threads=0
hide_kernel_threads=1
hide_userland_threads=0
shadow_other_users=0
show_thread_names=0
show_program_path=1
highlight_base_name=0
highlight_megabytes=1
highlight_threads=1
tree_view=0
header_margin=1
detailed_cpu_time=0
cpu_count_from_zero=0
show_cpu_usage=1
show_cpu_frequency=0
update_process_names=0
account_guest_in_cpu_meter=0
color_scheme=0
enable_mouse=1
delay=15
left_meters=LeftCPUs4 Memory Swap
left_meter_modes=1 1 1
right_meters=RightCPUs4 Tasks LoadAverage Uptime
right_meter_modes=1 2 2 2

華為手機關掉音樂接上藍芽後的自動撥放

這困擾我很久了,不過有一次看到正確的方式

正確關掉的方式

開啟音樂

右下角選我的-> 下滑到設定 -> 支援藍牙控制撥放 -> 關閉

這樣就可以了

KDE Plasma CPU High Usage After Install Nvidia Driver

My notebook with RTX3060 has this issue after do something I don’t know. OS is Ubuntu 18.04

Everything is ok after first time install RTX3060, there is no high cpu issue, but after install IME(gcin), nomachine and anydesk and do something I don’t remember, plasma high cpu usage issue happened.

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Google 雲端硬碟搬家

Windows 主硬碟快爆了,所以要將原來放在 C 的雲端硬碟 Cache 搬到 D 槽

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Mitsubishi Lossnay 全熱交換器功能筆記

這是一篇筆記文,要不然每次設完都忘了

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Mobaxterm Thinkpad Page Left/Right

Mobaxterm 有很多 tab ,常常要切來切去很麻煩,這時候就想可不可以將 Thinkpad 的 Page Left/Right 拿來用呢?

可以,在 Mobaxterm -> Setting -> Keyboard Shortcut ->
Previous Tab 設成 Alt-Right
Next Tab 設成 Alt-Left
這樣就可以了