Next update of VFS modules development guide
[tprouty/samba.git] / docs / smbdotconf / tuning / aiowritesize.xml
1 <samba:parameter name="aio write size"
2                  context="S"
3                  type="integer"
4                  xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
5 <description>
6   <para>If Samba has been built with asynchronous I/O support and this
7     integer parameter is set to non-zero value,
8     Samba will write to file asynchronously when size of request is bigger
9     than this value. Note that it happens only for non-chained and non-chaining
10     reads and when not using write cache.</para>
11
12   <para>Current implementation of asynchronous I/O in Samba 3.0 does support
13     only up to 10 outstanding asynchronous requests, read and write combined.</para>
14   
15   <related>write cache size</related>
16   <related>aio read size</related>
17 </description>
18
19 <value type="default">0</value>
20 <value type="example">16384<comment> Use asynchronous I/O for writes bigger than 16KB
21     request size</comment></value>
22 </samba:parameter>