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Diffstat (limited to 'docs/docbook/smbdotconf/tuning/writecachesize.xml')
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1 files changed, 30 insertions, 0 deletions
diff --git a/docs/docbook/smbdotconf/tuning/writecachesize.xml b/docs/docbook/smbdotconf/tuning/writecachesize.xml new file mode 100644 index 0000000000..8b5fbe66bd --- /dev/null +++ b/docs/docbook/smbdotconf/tuning/writecachesize.xml @@ -0,0 +1,30 @@ +<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> |