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Description of problem: "iostat -dxz 10" output, in the %wrqm column, colours high percentages with an "attention" colour (it's pink or red on my light-background xterm). Low values are blue. I'm seeing this on a swap disk, but it likely applies to any usage of a disk. The attention-marking is misleading: a number approaching 100% is not at all a bad thing - in fact it's _good_ that the system can reduce the number of IOPS by merging sequences. It's far from clear that any range of values in this field can be considered as either acceptable or bad. As an example, I've seen %wrqm at 70+ while %util is < 6. Both %wrqm and %rrqm do this. Version-Release number of selected component (if applicable): sysstat-11.5.7-4.fc27.x86_64 How reproducible: 100% given a suitable I/O load Steps to Reproduce: 1. Push the system into active paging 2. iostat -dxz 10 Actual results: Redness Expected results: No redness.
Upstream issue: https://github.com/sysstat/sysstat/issues/177
Hi Jeremy, so according to the https://github.com/sysstat/sysstat/issues/177#issuecomment-376277794 this is by design. peter
That is a foolish position to take, IMHO. If that really was the case then he should not use what is traditionally reserved, at least in Western cultures, as a colour indicating DANGER (deliberate emphasis). For any of the columns.
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