Coding is very slow

Anything and everything to do with DCP-o-matic.
SunSea
Posts: 3
Joined: Sat Sep 30, 2023 5:59 am

Re: Coding is very slow

Post by SunSea »

Carsten wrote: Sat Sep 30, 2023 11:43 am Sure windows 10 has a drive cache system (and the drive itself has a cache as well). Are these encoding times including the final hash run? Hashing is MUCH faster on SSDs. Is the HDD internal SATA, or external (USB3.0)?
There are three HD in my LaCie 12big Thunderbolt 3:
1. HD0 raid0 4x2Tdisk speed 500M/s
2. HD1 raid0 4x2Tdisk speed 500M/s
3. HD2 single 16T sata disk speed 200M/s

There are one usb3.0 external disk
4. HD4 usb3.0 WD My Passport 2T

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Test 3. input file from SSD1, output file HD no cache, CPU 30-40%, 5fps.
Test 4. input file from SSD1, output file HD write cache, CPU 80%, 10 fps.

This HD is HD0 raid0 4x2Tdisk speed 500M/s
So, you can see CPU and disk speed not full both, There is a problem here.

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Today, I upgraded the driver for the Lacie 12big, Test HD0 again, Better than before.

Test 7. input file from SSD1, output file HD0 no cache, CPU 57%, Disk 13% speed 10M/s, 6.6fps.
Test 8. input file from SSD1, output file HD0 write cache, CPU 97%, Disk 5% speed 13.6M/s, 10fps.

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