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DB_ENV-&gt;set_mp_max_write
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#include &lt;db.h&gt;

int
DB_ENV-&gt;set_mp_max_write(DB_ENV *env, int maxwrite, db_timeout_t maxwrite_sleep);

int
DB_ENV-&gt;get_mp_max_write(DB_ENV *env, int *maxwritep, db_timeout_t *maxwrite_sleepp);
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Description: DB_ENV-&gt;set_mp_max_write
The DB_ENV-&gt;set_mp_max_write method limits the number of sequential write
operations scheduled by the library when flushing dirty pages from the
cache.
The database environment's maximum number of sequential write operations may also be configured using the
environment's <a href="../../db4-devel-4.7.25/ref/env/db_config.html#DB_CONFIG">DB_CONFIG</a> file. The syntax of the entry in that
file is a single line with the string "set_mp_max_write", one or more whitespace
characters, and the maximum number of sequential writes and the number of microseconds
to sleep, also separated by whitespace characters.
Because the <a href="../../db4-devel-4.7.25/ref/env/db_config.html#DB_CONFIG">DB_CONFIG</a> file is read when the database environment
is opened, it will silently overrule configuration done before that
time.
The DB_ENV-&gt;set_mp_max_write method configures a database environment, not only operations
performed using the specified <a href="../../db4-devel-4.7.25/api_c/env_class.html">DB_ENV</a> handle.
The DB_ENV-&gt;set_mp_max_write method
returns a non-zero error value on failure
and 0 on success.

Parameters 
 maxwrite<ul compact><li>The maximum number of sequential write operations scheduled by the
library when flushing dirty pages from the cache, or 0 if there is
no limitation on the number of sequential write operations.</ul>
 maxwrite_sleep<ul compact><li>The number of microseconds the thread of control should pause before
scheduling further write operations. It must be specified as an
unsigned 32-bit number of microseconds, limiting the maximum pause to
roughly 71 minutes.</ul>
 
 Errors
The DB_ENV-&gt;set_mp_max_write method
may fail and return one of the following non-zero errors:
 
EINVAL<ul compact><li>An
invalid flag value or parameter was specified.</ul>
 
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Description: DB_ENV-&gt;get_mp_max_write
The DB_ENV-&gt;get_mp_max_write method returns the current maximum number of
sequential write operations and microseconds to pause.
The DB_ENV-&gt;get_mp_max_write method may be called at any time during the life of the
application.
The DB_ENV-&gt;get_mp_max_write method
returns a non-zero error value on failure
and 0 on success.

Parameters 
 maxwritep<ul compact><li>The maxwritep parameter references memory into which
 the maximum number of sequential write operations is copied.</ul> 
 maxwrite_sleepp<ul compact><li>The maxwrite_sleepp parameter references memory into which
 the microseconds to pause before scheduling further write operations is copied.</ul> 
 
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 Class
<a href="../../db4-devel-4.7.25/api_c/env_class.html">DB_ENV</a>, <a href="../../db4-devel-4.7.25/api_c/mempfile_class.html">DB_MPOOLFILE</a>
 See Also
<a href="../../db4-devel-4.7.25/api_c/memp_list.html">Memory Pools and Related Methods</a>
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