mix of random data and a fixed pattern. The fixed pattern is either zeros,
or the pattern specified by \fBbuffer_pattern\fR. If the pattern option
is used, it might skew the compression ratio slightly. Note that this is per
mix of random data and a fixed pattern. The fixed pattern is either zeros,
or the pattern specified by \fBbuffer_pattern\fR. If the pattern option
is used, it might skew the compression ratio slightly. Note that this is per
-block size unit, for file/disk wide compression level that matches this
-setting, you'll also want to set \fBrefill_buffers\fR.
+block size unit, see \fBbuffer_compress_chunk\fR for setting a finer granularity
+of compressible regions.
.TP
.BI buffer_compress_chunk \fR=\fPint
See \fBbuffer_compress_percentage\fR. This setting allows fio to manage
.TP
.BI buffer_compress_chunk \fR=\fPint
See \fBbuffer_compress_percentage\fR. This setting allows fio to manage
will provide \fBbuffer_compress_percentage\fR of blocksize random data,
followed by the remaining zeroed. With this set to some chunk size smaller
than the block size, fio can alternate random and zeroed data throughout the
will provide \fBbuffer_compress_percentage\fR of blocksize random data,
followed by the remaining zeroed. With this set to some chunk size smaller
than the block size, fio can alternate random and zeroed data throughout the
.TP
.BI buffer_pattern \fR=\fPstr
If set, fio will fill the I/O buffers with this pattern or with the contents
.TP
.BI buffer_pattern \fR=\fPstr
If set, fio will fill the I/O buffers with this pattern or with the contents