diskstats_linux.go: add collector.diskstats.disable-queue-stats flag #3283
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Skips call to `SysBlockDeviceQueueStats` to improve performance over a large number of devices.
SuperQ
reviewed
Mar 27, 2025
| @@ -65,6 +66,10 @@ const ( | |||
| udevSCSIIdentSerial = "SCSI_IDENT_SERIAL" | |||
| ) | |||
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| var ( | |||
| disableQueueStats = kingpin.Flag("collector.diskstats.disable-queue-stats", "disable queue stats").Default("false").Bool() | |||
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We usually prefer "positive" flags. Then the disable would be --no-collector.diskstats.enable-queue-stats
This makes the explicit version of the disable less awkward looking (--no-collector.diskstats.disable-queue-stats).
Suggested change
| disableQueueStats = kingpin.Flag("collector.diskstats.disable-queue-stats", "disable queue stats").Default("false").Bool() | |
| enableQueueStats = kingpin.Flag("collector.diskstats.enable-queue-stats", "enable queue stats").Default("true").Bool() |
SuperQ
requested changes
Mar 27, 2025
|
This needs a DCO sign-off. You can use |
Merged
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Ping, are you able to finish this work? |
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Adds a flag to skip the call to
SysBlockDeviceQueueStatsin thediskstatscollector, to improve performance over a large number of devices when the extrarotationallabel is not needed on theinfometric.Fixes #3282.
I don't have a strong preference on the naming or default, as long as it can be configured. In the PR, I named it
collector.diskstats.disable-queue-statsdefaulting tofalse, since this is probably an uncommon issue affecting systems with many (thousands) of block devices.