<xref linkend="guc-checkpoint-completion-target">). This is

usually what you want, because it minimizes the impact on query

processing. If you want to start the backup as soon as

possible, change the second parameter to <literal>true</>.

possible, change the second parameter to <literal>true</>, which will

issue an immediate checkpoint using as much I/O as available.

</para>

<para>

<term><option>--checkpoint=<replaceable class="parameter">fast|spread</replaceable></option></term>

<listitem>

<para>

Sets checkpoint mode to fast or spread (default) (see <xref linkend="backup-lowlevel-base-backup">).

Sets checkpoint mode to fast(immediate)or spread (default) (see <xref linkend="backup-lowlevel-base-backup">).

</para>

</listitem>

</varlistentry>

<refsect1>

<title>Notes</title>

<para>

At the beginning of the backup, a checkpoint needs to be written on the

server the backup is taken from. Especially if the option

<literal>--checkpoint=fast</literal> is not used, this can take some time

during which <application>pg_basebackup</application> will be appear

to be idle.

</para>

<para>

The backup will include all files in the data directory and tablespaces,

including the configuration files and any additional files placed in the

if (maxrate>0)

maxrate_clause=psprintf("MAX_RATE %u",maxrate);

if (verbose)

fprintf(stderr,

_("%s: initiating base backup, waiting for checkpoint to complete\n"),

progname);

if (showprogress&& !verbose)

fprintf(stderr,"waiting for checkpoint\n");

psprintf("BASE_BACKUP LABEL '%s' %s %s %s %s %s %s",

escaped_label,

strlcpy(xlogstart,PQgetvalue(res,0,0),sizeof(xlogstart));

if (verbose)

fprintf(stderr,_("%s: checkpoint completed\n"),progname);