diff options
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/procfs-diskstats | 22 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-block | 28 |
2 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/procfs-diskstats b/Documentation/ABI/testing/procfs-diskstats new file mode 100644 index 000000000000..99233902e09e --- /dev/null +++ b/Documentation/ABI/testing/procfs-diskstats @@ -0,0 +1,22 @@ +What: /proc/diskstats +Date: February 2008 +Contact: Jerome Marchand <jmarchan@redhat.com> +Description: + The /proc/diskstats file displays the I/O statistics + of block devices. Each line contains the following 14 + fields: + 1 - major number + 2 - minor mumber + 3 - device name + 4 - reads completed succesfully + 5 - reads merged + 6 - sectors read + 7 - time spent reading (ms) + 8 - writes completed + 9 - writes merged + 10 - sectors written + 11 - time spent writing (ms) + 12 - I/Os currently in progress + 13 - time spent doing I/Os (ms) + 14 - weighted time spent doing I/Os (ms) + For more details refer to Documentation/iostats.txt diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block new file mode 100644 index 000000000000..4bd9ea539129 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-block @@ -0,0 +1,28 @@ +What: /sys/block/<disk>/stat +Date: February 2008 +Contact: Jerome Marchand <jmarchan@redhat.com> +Description: + The /sys/block/<disk>/stat files displays the I/O + statistics of disk <disk>. They contain 11 fields: + 1 - reads completed succesfully + 2 - reads merged + 3 - sectors read + 4 - time spent reading (ms) + 5 - writes completed + 6 - writes merged + 7 - sectors written + 8 - time spent writing (ms) + 9 - I/Os currently in progress + 10 - time spent doing I/Os (ms) + 11 - weighted time spent doing I/Os (ms) + For more details refer Documentation/iostats.txt + + +What: /sys/block/<disk>/<part>/stat +Date: February 2008 +Contact: Jerome Marchand <jmarchan@redhat.com> +Description: + The /sys/block/<disk>/<part>/stat files display the + I/O statistics of partition <part>. The format is the + same as the above-written /sys/block/<disk>/stat + format. |