[#kernel-ChainstateManagerOpts-prevoutfetch_threads_num]
= xref:kernel.adoc[kernel]::xref:kernel/ChainstateManagerOpts.adoc[ChainstateManagerOpts]::prevoutfetch&lowbar;threads&lowbar;num
:relfileprefix: ../../
:mrdocs:

Number of worker threads used for prefetching block input prevouts&period; Zero means no parallel fetching&period;

== Synopsis

Declared in `&lt;kernel&sol;chainstatemanager&lowbar;opts&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int32&lowbar;t prevoutfetch&lowbar;threads&lowbar;num = &lcub;DEFAULT&lowbar;PREVOUTFETCH&lowbar;THREADS&rcub;;
----


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