flushed to disk after a configurable number of bytes. Otherwise, these

pages may be kept in the OS's page cache, inducing a stall when

<literal>fsync</literal> is issued at the end of a checkpoint. This setting will

often help to reduce transaction latency, but it also can an adverse effect

on performance; particularly for workloads that are bigger than

often help to reduce transaction latency, but it also canhavean adverse

effecton performance; particularly for workloads that are bigger than

<xref linkend="guc-shared-buffers"/>, but smaller than the OS's page cache.

</para>