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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54895
Location: 56N 3W
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 Posted: Fri Feb 21, 2025 4:45 pm Post subject: |
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Jimini,
Did you do this on SSD or magnetic HDD?
Writes to SSD are slow if you need to wait for erase cycles, as FLASH memory cells cannot be overwritten.
I don't think forcing an erase is possible. It depends how the drive implements trim.
Its supposed to make notes, then do the erase before it slows down writes.
In some drives, it is an immediate command, which is a bad thing for write amplification.
Use fstrim now and again. No the discard mount option.
Magnetic HDD just overwrite previously written space. No prior slow erase required.
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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dmpogo
Advocate
Joined: 02 Sep 2004
Posts: 3475
Location: Canada
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| Posted: Fri Feb 21, 2025 11:47 pm Post subject: |
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| NeddySeagoon wrote: | Jimini,
Did you do this on SSD or magnetic HDD?
Writes to SSD are slow if you need to wait for erase cycles, as FLASH memory cells cannot be overwritten.
I don't think forcing an erase is possible. It depends how the drive implements trim.
Its supposed to make notes, then do the erase before it slows down writes.
In some drives, it is an immediate command, which is a bad thing for write amplification.
Use fstrim now and again. No the discard mount option.
Magnetic HDD just overwrite previously written space. No prior slow erase required. |
But that would not explain the difference between the kernel versions ? |
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Jimini
l33t
Joined: 31 Oct 2006
Posts: 614
Location: Germany
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| Posted: Sat Feb 22, 2025 4:14 am Post subject: |
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| NeddySeagoon wrote: | | Did you do this on SSD or magnetic HDD? |
Only a RAID6 consisting of 7 HDD (1x Toshiba MG08ACA16TE, 1x Seagate Exos X18, 5x Seagate Exos X16) is affected here.
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"The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents." (H.P. Lovecraft: The Call of Cthulhu) |
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Kernel & Hardware
