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How do I tell how much load a particular process is contributing to each of several available volumes/mounts? It seems that dstat only shows aggregate stats across all processes per disk, and iotop only shows aggregates stats across all disks per process.

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  • It's kinda bad to ask the same question twice. You might have edited the title of the original note.
    – mdpc
    Apr 11, 2013 at 5:32
  • @mdpc I specifically was asking two distinct questions. I can try to make them more clearly distinguished? To other readers, this is what is being referring to: unix.stackexchange.com/questions/72027/….
    – Yang
    Apr 11, 2013 at 7:39
  • The Linux kernel does not track this information. Solaris on the other hand does, and this information is available via dtrace
    – Johan
    Apr 11, 2013 at 13:12

2 Answers 2

Reset to default
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I don't know if this is still relevant, but I use iostat to show I/O statistics for individual devices and partitions. For example, in order to monitor a running cpio task with process id 32731 is use the following command:

iostat -xd /proc/32731 -p sda,sdb,sdc,sdd 1
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You can use htop. It is a better process monitoring tool that top.

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  • I already use htop. It does not provide per-process per-disk stats.
    – Yang
    Jun 15, 2013 at 19:37

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