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JonghyeokPark / SWE3003-41-and-ECE5605-41

2021 SKKU Introduction to Database (Prof. Sang-Won Lee)
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[Assignment]Homework#1 - ECE5605_41 #11

Open 2hyel05 opened 3 years ago

2hyel05 commented 3 years ago

I have a question for 'Homework#1 -Page Mapping FTL'. Is this instruction have only one page? I was wondering it has more instruction pages. The bottom of the page shows 1/28, but it shows me only one page of instruction. if so, what I have to do is just 'calculate the following metrics' part and explain why? I also would like to know the submission format too.

Van-NguyenPham commented 3 years ago

Dear TAs, I would like to know what happens to garbage collection if there is no invalid page in all blocks? Thank you.

JonghyeokPark commented 3 years ago

@2hyel05 First of all, you can ignore the total page number 28. Sorry for the typo. Instruction for Homework#1 is a single page. There's no strict rule for the submission format; for instance, write down your answer for "calculating the following metrics" and submit the PDF file.

JonghyeokPark commented 3 years ago

@Nguyen-K60 I'm not sure if I understand your question correctly. If there is no invalid page in all blocks when the GC is triggered, it means that SSD is (already) running out of space. It won't happen in commercial SSDs because the space manager prevents this issue.