io_u_queue: convert rings to bool

[fio.git] / fio.1

diff --git a/fio.1 b/fio.1
index 198b9d85f872a4b959fd997dca43326a9f5b5ff4..63d32a52712e48839873109d17a45bd90b7324d2 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -1242,8 +1242,8 @@ WRITEs) that compresses to the specified level. Fio does this by providing a
 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


@@ -1251,7 +1251,8 @@ how big the ranges of random data and zeroed data is. Without this set, fio
 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

-I/O buffer.
+I/O buffer. This is particularly useful when bigger block sizes are used
+for a job. Defaults to 512.

 .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