Its a normal HD i guess 4096 is ok,
but i do not think that this matters.
Am 23.06.22 um 13:11 schrieb Rich W:
Hi,
A blocksize of 1G seems extreme.
What is the optimal blocksize of the output device?
Cheers,
-Rich
On Thu, Jun 23, 2022, 4:52 AM Radisson via Dng <[email protected]> wrote:
Hi list,
i found a strange ext4 (?) effect.
when i write to a disk:
dd if=/dev/zero of=xx bs=1G count=1
reports 2.6 GB (expected)
doing again speed drops to 200MB.
removing xx restores old speed.
I ask the net and it seems that the effect is there
since kernel 2.6. I found the explainations a bit confusing.
does anyone know more ?
note: i was analysing a performace issue for mysql and i am
not sure if that problems matters outside tests.
re
rp
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