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scst/README: Correct description of 'opt_trans_len'

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1. Correct a sentence where 'optimal transfer length' should read 'block size'.
2. Use '4194304' instead of '4 MB' when referring to a value of the parameter.
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Samy Mahmoudi
2023-01-15 22:07:11 -05:00
committed by Gleb Chesnokov
parent 8e8670d43b
commit fbe5316fc7
1 changed files with 3 additions and 3 deletions
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scst/README
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@@ -1141,9 +1141,9 @@ cache. The following parameters possible for vdisk_fileio:
- opt_trans_len - specifies the optimal transfer length data in the block
limits VPD page. Value is in bytes, and must be a multiple of the block
size. Default is 524288. Setting this parameter to a multiple of the
optimal transfer length below 4 MB may improve performance. Setting this
parameter to a value above 4 MB hurts performance because the SGV cache
only supports buffers up to 4 MB.
block size that is less than 4194304 (4 MB) may improve performance.
Setting this parameter to a value greater than 4194304 hurts performance
because the SGV cache only supports buffers up to 4 MB.
- write_through - disables write back caching. Note, this option
has sense only if you also *manually* disable write-back cache in