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-<samba:parameter name="write cache size"
- context="S"
- xmlns:samba="http://samba.org/common">
-<listitem>
- <para>If this integer parameter is set to non-zero value,
- Samba will create an in-memory cache for each oplocked file
- (it does <emphasis>not</emphasis> do this for
- non-oplocked files). All writes that the client does not request
- to be flushed directly to disk will be stored in this cache if possible.
- The cache is flushed onto disk when a write comes in whose offset
- would not fit into the cache or when the file is closed by the client.
- Reads for the file are also served from this cache if the data is stored
- within it.</para>
-
- <para>This cache allows Samba to batch client writes into a more
- efficient write size for RAID disks (i.e. writes may be tuned to
- be the RAID stripe size) and can improve performance on systems
- where the disk subsystem is a bottleneck but there is free
- memory for userspace programs.</para>
-
- <para>The integer parameter specifies the size of this cache
- (per oplocked file) in bytes.</para>
-
- <para>Default: <command moreinfo="none">write cache size = 0</command></para>
-
- <para>Example: <command moreinfo="none">write cache size = 262144</command></para>
-
- <para>for a 256k cache size per file.</para>
-</listitem>
-</samba:parameter>