NVME−PREDICTABLE−L - Online Linux Manual PageSection : 1
Updated : 02/01/2023
Source : NVMe
Note : NVMe Manual

NAMEnvme-predictable-lat-log − Send Predictable latency per NVM set log page request, returns result and log

SYNOPSISnvme predictable−lat−log <device> [−−nvmset−id=<nvmset_id> | −i <nvmset_id>] [−−raw−binary | −b] [−−output−format=<fmt> | −o <fmt>]

DESCRIPTIONRetrieves the NVMe Predictable latency per NVM set log page from an NVMe device and provides the returned structure​. The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1)​. On success, the returned Predictable latency per NVM set log structure may be returned in one of several ways depending on the option flags; the structure may parsed by the program and printed in a readable format or the raw buffer may be printed to stdout for another program to parse​.

OPTIONS−i <nvmset_id>, −−nvmset−id=<nvmset_id> Retrieve the Predictable latency per NVM set log for the given nvmset id​. This argument is mandatory and its success may depend on the devices statistics to provide this log For More details see NVM Express 1​.4 Spec​. Section 5​.14​.1​.10​. The default nvmset id to use is 1 for the device​. −b, −−raw−binary Print the raw Predictable latency per NVM set log buffer to stdout​. −o <format>, −−output−format=<format> Set the reporting format to normal, json, or binary​. Only one output format can be used at a time​.

EXAMPLES•  Print the Predictable latency per NVM set log page in a human readable format: # nvme predictable−lat−log /dev/nvme0•  Print the raw Predictable latency per NVM set log to a file: # nvme predictable−lat−log /dev/nvme0 −−raw−binary > nvmset_log​.rawIt is probably a bad idea to not redirect stdout when using this mode​.

NVMEPart of the nvme−user suite
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