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Comment by y4mi | Hacker News Reader

Why though?

My drive can write with up to 3gb/s. I only have 32 gb of ram, so the process should take at most 10s. Generally less, as a lot is usually free.

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If your drive is actually capable of sustained 3 GB/s write it would be ~11.5 seconds. However typical NVMe drives are closer to ~2 GB/s sustained which would be more like 17 seconds. (Note GB 8 * 10^9 bits and GiB 8 * 1024^3 bits.)

I guess most people have 16 GiB RAM or less though. I'm not sure why an ~10 second wait is too long given that the user intentionally selected hibernate instead of sleep.

you have 32 GiB of RAM, gibibytes, meaning 32 * 1024^3. does your drive write at 3 GB/s (gigabytes) or Gb/s (gigabits)? if little b bits, it'll be more like 80 sec

if this comment is serious i strongly suggest you inform yourself about nvme drives. they're absolutely worth their money.

i haven't encountered anyone in years that didn't have at least one in their pc/laptop, but if you dont: i strongly suggest you buy one. because writing 30 Gbyte sequentially generally does takes about 10 seconds.

When I got my work laptop, first thing I did is erased its NVMe SSD by writing garbage. It was fast first 30 seconds. In the end sustained write speed was around 60 MB/s. My old HDD works faster. It's fast enough in day-to-day usage, though.

I'll be honest. i haven't encountered a single workload in which i had to write over 90 GByte over 30 seconds (3gbyte sustained for 30 seconds), so you could be correct. Even benchmarks are generally done within 10-15 seconds and my IO is usually constrained by network or CPU at that point.

not sure how that would in any way impact a hibernate routine which would very rarely have to store more then 64gb though.

Probably "big b". 3 Gb/s (small b) is approximately 350 MB/s (big b).

My 9-year-old SATA SSD does better than that.

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