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0 pointsRinzler891y ago0 comments

>500MB/s read/write is way more than it needs. I wasn't even doing any sustained writes.

Benchmarked or claimed? For 500MB files or 4kb?

>If you're ok with a filesystem causing hard freezes, then all power to you.

To me it never caused that and I used in on some slow ass 5200 rpm HDDs. You have to understand that the firmware on the flash controller on that USB Stick was'nt built or tested for the workloads BTRFS triggers. Even some nvme SSDs are reported to act weird under it because the manufacturer tests the firmware for FAT/NTFS loads not BTRFS or other such FSs. So the issues is with your Thumb drive firmware which is independent of the claimed 500mb raw sequencial throughouput.

You're trying to drive a Ferrari on a dirt road and claiming the dirt road is ar fault when your Ferrari has issues.

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sevg1y ago

Ah, HN is letting me reply now.

Irrelevant how fast the USB is. If the filesystem has to do things slower, then simply do things slower. There's no excuse for hard freezes.

> You're trying to drive a Ferrari on a dirt road and claiming the dirt road is ar fault when your Ferrari has issues.

So btrfs in this metaphor is the Ferrari? Yes, I agree with you that my Ferrari definitely 100% has issues XD

You keep talking about btrfs workloads as though it's something crazy for usb firmware to handle. It really isn't. There's a bit of performance overhead, but not so much as to be unusable. And it's just I/O at the end of the day, not some mysterious workload that pushes the wrong buttons. USB firmware is more likely to freak out when doing sustained I/O and the thing gets too hot.

Anyway, I did minimal writes with btrfs before the freezes, and this particular USB drive I was able to push to the limit with XFS. Sustained reads and writes in a benchmark workload. Way more than the manufacturer would have tested for. And no freezes. I rest my case.

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