###### tags: `Linux`, `SRE`
# SRE 讀書會 Round 4 #07 - 線上讀書會共筆

## 活動資訊

* Date: [20200716] (四) 20:00 - 21:30
* [導讀進度表](https://docs.google.com/spreadsheets/d/1Lgti3mILkvwxyzklX1vvLraaGD-7ePK9rkmlulfOknE/edit#gid=0)
* [導讀 Guideline](https://study-area.sre.tw/GuideLine/)
* Github: [study-area-docs](https://github.com/cross-community/study-area-docs)

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# 現場共筆

## 21 | 套路篇：如何“快准狠”找到系統內存的問題？ - Rico (阿福)

Q: cgroup 單獨的實際應用？

- systemd, filebeat
- https://www.freedesktop.org/software/systemd/man/systemd.resource-control.html

* [微調處理能力](https://access.redhat.com/documentation/zh-tw/red_hat_enterprise_linux/6/html/performance_tuning_guide/s-memory-captun)

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## 22 | 答疑（三）：文件系統與磁盤的區別是什麼？ - 泳褲

redis-fs: https://github.com/MatthiasWinkelmann/redis-fs

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## 23 | 基礎篇：Linux 文件系統是怎麼工作的？ - John

* inode structure: https://www.itread01.com/content/1543405086.html
* iNode(matadata)
https://www.kernel.org/doc/html/latest/filesystems/ext4/inodes.html?highlight=inode

* Directory Entries()
https://www.kernel.org/doc/html/latest/filesystems/ext4/directory.html

* 扇區(Sector)
硬連結 vs 軟連結
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# 參考資料