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# System prepended metadata

title: FEMU Q&A

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# FEMU Q&A

![](https://i.imgur.com/5XMkxB3.png =300x)

* how to 
    1. write table
        * 創一個檔案，檔案裏面寫資料
    3. read table & get time
    4. update table & get time
    5. do something in ssd & measure computing offload(like FLOPS)
* files:
    * FEMU / io /
    * FEMU / qemu-io-cmds.c
    * FEMU / qemu-io.c

1. How to write tables into NAND?
    * from guest level to NAND level, which commands are recommended?

2. How to read tables stored in NAND?
    * which commands are recommended?