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New command -data_cache_size

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Thomas Schmitt
2012-03-11 16:41:10 +00:00
parent b42293cd05
commit c704c9c205
15 changed files with 187 additions and 46 deletions
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21
xorriso/xorriso.texi
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@ -50,7 +50,7 @@
@c man .\" First parameter, NAME, should be all caps
@c man .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
@c man .\" other parameters are allowed: see man(7), man(1)
@c man .TH XORRISO 1 "Version 1.2.1, Mar 10, 2012"
@c man .TH XORRISO 1 "Version 1.2.1, Mar 11, 2012"
@c man .\" Please adjust this date whenever revising the manpage.
@c man .\"
@c man .\" Some roff macros, for reference:
@ -1189,6 +1189,25 @@ of severe problems, and may avoid some less severe error events.
@*
Mode "appendable_wo" is like "on" with the additional property that
non-empty write-only files are regarded as appendable rather than blank.
@c man .TP
@item -data_cache_size number_of_tiles blocks_per_tile
@kindex -data_cache_size adjusts read cache size
@cindex Image reading, cache size, -data_cache_size
Set the size and granularity of the data cache which is used when ISO images
are loaded and when file content is read from ISO images. The cache consists
of several tiles, which each consists of several blocks. A larger cache
reduces the need for tiles being read multiple times. Larger tiles might
additionally improve the data throughput from the drive, but can be
wasteful if the data are scattered over the medium.
@*
Larger cache sizes help best with image loading from MMC drives. They are an
inferior alternative to -osirrox option "sort_lba_on".
@*
blocks_per_tile must be a power of 2. E.g. 16, 32, or 64. The overall cache
size must not exceed 1 GiB.
The default values can be restored by parameter "default" instead of one or
both of the numbers.
Currently the default is 32 tiles of 32 blocks = 2 MiB.
@end table
@c man .TP
@c man .B Inserting files into ISO image: