diff options
Diffstat (limited to 'HOWTO')
| -rw-r--r-- | HOWTO | 19 |
1 files changed, 13 insertions, 6 deletions
@@ -1401,11 +1401,18 @@ Buffers and memory .. option:: buffer_pattern=str - If set, fio will fill the I/O buffers with this pattern. If not set, the - contents of I/O buffers is defined by the other options related to buffer - contents. The setting can be any pattern of bytes, and can be prefixed with - 0x for hex values. It may also be a string, where the string must then be - wrapped with ``""``, e.g.:: + If set, fio will fill the I/O buffers with this pattern or with the contents + of a file. If not set, the contents of I/O buffers are defined by the other + options related to buffer contents. The setting can be any pattern of bytes, + and can be prefixed with 0x for hex values. It may also be a string, where + the string must then be wrapped with ``""``. Or it may also be a filename, + where the filename must be wrapped with ``''`` in which case the file is + opened and read. Note that not all the file contents will be read if that + would cause the buffers to overflow. So, for example:: + + buffer_pattern='filename' + + or:: buffer_pattern="abcd" @@ -1419,7 +1426,7 @@ Buffers and memory Also you can combine everything together in any order:: - buffer_pattern=0xdeadface"abcd"-12 + buffer_pattern=0xdeadface"abcd"-12'filename' .. option:: dedupe_percentage=int |