183 lines
5.8 KiB
Groff
183 lines
5.8 KiB
Groff
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'\" t
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.\" Title: nvme-sndk-set-latency-monitor-feature
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.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
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.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
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.\" Date: 04/11/2025
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.\" Manual: NVMe Manual
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.\" Source: NVMe
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.\" Language: English
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.\"
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.TH "NVME\-SNDK\-SET\-LAT" "1" "04/11/2025" "NVMe" "NVMe Manual"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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nvme-sndk-set-latency-monitor-feature \- Set NVMe sndk latency monitor feature options
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.SH "SYNOPSIS"
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.sp
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.nf
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\fInvme sndk set\-latency\-monitor\-feature\fR <device>
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[\-\-active_bucket_timer_threshold=<NUM> | \-t <NUM>]
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[\-\-active_threshold_a=<NUM> | \-a <NUM>]
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[\-\-active_threshold_b=<NUM> | \-b <NUM>]
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[\-\-active_threshold_c=<NUM> | \-c <NUM>]
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[\-\-active_threshold_d=<NUM> | \-d <NUM>]
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[\-\-active_latency_config=<NUM> | \-f <NUM>]
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[\-\-active_latency_minimum_window=<NUM> | \-w <NUM>]
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[\-\-debug_log_trigger_enable=<NUM> | \-r <NUM>]
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[\-\-discard_debug_log=<NUM> | \-l <NUM>]
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[\-\-latency_monitor_feature_enable=<NUM> | \-e <NUM>]
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.fi
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.SH "DESCRIPTION"
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.sp
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For the NVMe device given, this command set the latency monitor feature options (if supported by the device)\&.
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.sp
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The <device> parameter is mandatory NVMe character device (ex: /dev/nvme0)\&.
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.sp
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Setting results can be checked with \fIget\-latency\-monitor\-log\fR command\&.
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.sp
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On success it returns 0, error code otherwise\&.
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.SH "OPTIONS"
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.PP
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\-t <NUM>, \-\-active_bucket_timer_threshold=<NUM>
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.RS 4
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The value that loads the Active Bucket Timer Threshold; default value is 07E0h\&.
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.RE
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.PP
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\-a <NUM>, \-\-active_threshold_a=<NUM>
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.RS 4
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The value that loads into the Active Threshold A; default value is 05h\&.
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.RE
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.PP
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\-b <NUM>, \-\-active_threshold_b=<NUM>
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.RS 4
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The value that loads into the Active Threshold B; default value is 13h\&.
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.RE
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.PP
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\-c <NUM>, \-\-active_threshold_c=<NUM>
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.RS 4
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The value that loads into the Active Threshold C; default value is 1Eh\&.
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.RE
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.PP
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\-d <NUM>, \-\-active_threshold_d=<NUM>
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.RS 4
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The value that loads into the Active Threshold D; default value is 2Eh\&.
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.RE
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.PP
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\-f <NUM>, \-\-active_latency_config=<NUM>
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.RS 4
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The value that loads into the Active Latency Configuration\&. This configures how both the Active Latency Stamp, and the Active Measured Latency Fields are updated on a per I/O command (Read, Write, Deallocate) counter basis; default value is 0FFFh\&.
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.RE
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.PP
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\-w <NUM>, \-\-active_latency_minimum_window=<NUM>
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.RS 4
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The value that loads into the Active Latency Minimum Window; default value is 0Ah\&.
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.RE
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.PP
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\-r <NUM>, \-\-debug_log_trigger_enable=<NUM>
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.RS 4
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The value that loads into the Debug Log Trigger Enable; When set to 1b the first time the bucket/counter combination is incremented a debug log is triggered\&. When cleared to 0b a debug log will not be triggered when the bucket/counter combination is incremented\&.
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.RE
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.PP
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\-l <NUM>, \-\-discard_debug_log=<NUM>
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.RS 4
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Discard Debug Log\&. When cleared to 00h the debug log, if it exists, will not be cleared\&. When set to 01h the debug log will be discarded so another log can be triggered\&. All the fields in the Set Features Data structure are valid\&. When set to 02h the debug log will be discarded so another log can be triggered\&. None of the other fields of the Set Features Data structure are valid\&.
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.RE
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.PP
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\-e <NUM>, \-\-latency_monitor_feature_enable=<NUM>
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.RS 4
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Latency Monitor Feature Enable; When set to 01h the Latency Monitor Feature is enabled\&. When cleared to 00h the Latency Monitor Feature is disabled\&.
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.RE
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.SH "EXAMPLES"
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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Set NVMe sndk latency monitor feature options enabled with default value values:
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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# nvme sndk set\-latency\-monitor\-feature /dev/nvme0 \-e 1
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.fi
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.if n \{\
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.RE
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.\}
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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Set NVMe sndk latency monitor feature options disabled with default value values:
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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# nvme sndk set\-latency\-monitor\-feature /dev/nvme0 \-e 0
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.fi
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.if n \{\
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.RE
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.\}
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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Set NVMe sndk latency monitor feature options enabled with specific values:
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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# nvme sndk set\-latency\-monitor\-feature /dev/nvme0 \-\-active_bucket_timer_threshold=1 \e
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\-\-active_threshold_a=0x0 \e
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\-\-active_threshold_b=0x1 \e
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\-\-active_threshold_c=0x2 \e
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\-\-active_threshold_d=0x3 \e
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\-\-active_latency_config=0xfff \e
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\-\-active_latency_minimum_window=0 \e
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\-\-debug_log_trigger_enable=0 \e
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\-\-discard_debug_log=0 \e
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\-\-latency_monitor_feature_enable=0x1
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.fi
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.if n \{\
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.RE
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.\}
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.RE
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.SH "NVME"
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.sp
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Part of the nvme\-user suite\&.
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