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[SLUG] IOWait definition


I was wondering if someone could point me in the right direction for some doco?

I'm finding it hard to get a definition of what constitutes IOWait.
I know that IOwait is CPU time waiting for IO to happen to physical local disks, but I'm unsure about the following scenarios and if they contribute to IOWait:

- CPU time waiting for an NFS read/write to occur
- CPU time waiting for a network buffer to be read/written to. eg waiting for a full buffer to clear.
- Anything else??


PS. How do you set/query the network buffers in Linux?

Animal Logic

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