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Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: Enhanced partition statistics: documentation update Enhanced partition statistics: remove old partition statistics Enhanced partition statistics: procfs Enhanced partition statistics: sysfs Enhanced partition statistics: aoe fix Enhanced partition statistics: update partition statitics Enhanced partition statistics: core statistics block: fixup rq_init() a bit Manually fixed conflict in drivers/block/aoe/aoecmd.c due to statistics support.
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What: /proc/diskstats | ||
Date: February 2008 | ||
Contact: Jerome Marchand <[email protected]> | ||
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 |
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What: /sys/block/<disk>/stat | ||
Date: February 2008 | ||
Contact: Jerome Marchand <[email protected]> | ||
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 | ||
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What: /sys/block/<disk>/<part>/stat | ||
Date: February 2008 | ||
Contact: Jerome Marchand <[email protected]> | ||
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. |
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