Why is my Raspberry Pi 4 too slow as a server?

Re:Why is my Raspberry Pi 4 too slow as a server? by trenbologna on Tuesday June 24, 2025 @06:42PM (#44371824)

> So I can read from my disk at 117 MB/s. We’re far from the theoretical 1000 MB/s.

I think you are confusing megabytes a second and megabit. Gigabit speed is approximately 125 Megabytes per second. This is close to the speed you got.

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Re:Why is my Raspberry Pi 4 too slow as a server? by kaelwd on Tuesday June 24, 2025 @08:59PM (#44372691)

Yes but not there, later they get 350MB/s with the same setup.

> I put that drive an ICY BOX IB-1817M-C31 enclosure, with a maximum theoretical speed of 1000 MB/s.

Checks out, it has a 10Gb/s USB port.

The mistake is

> the USB controller of the Pi has a bandwidth of 4GB/s shared across all 4 ports

It's actually 4Gb/s = 512MB/s

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Re:Why is my Raspberry Pi 4 too slow as a server? by johnklos on Tuesday June 24, 2025 @11:06PM (#44373323)

USB 3 is 5 Gbps, but real world never exceeds 400 MB/sec. 350 MB/sec isn't bad for a single USB 3 port.

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Re:Why is my Raspberry Pi 4 too slow as a server? by thibaultamartin on Wednesday June 25, 2025 @03:22AM (#44374492)

This is absolutely right, thanks for pointing it out! The post has been updated to reflect that.

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