86 lines
2 KiB
Groff
86 lines
2 KiB
Groff
.\"Generated by db2man.xsl. Don't modify this, modify the source.
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..
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.TH "IRQBALANCE" 1 "Dec 2006" "Linux" "irqbalance"
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.SH NAME
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irqbalance \- distribute hardware interrupts across processors on a multiprocessor system
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.SH "SYNOPSIS"
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.nf
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\fBirqbalance\fR
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.fi
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.SH "DESCRIPTION"
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.PP
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The purpose of \fBirqbalance\fR is distribute hardware interrupts across processors on a multiprocessor system in order to increase performance\&.
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.SH "OPTIONS"
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.TP
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.B --oneshot
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Causes irqbalance to be run once, after which the daemon exits
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.TP
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.B --debug
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Causes irqbalance to run in the foreground and extra debug information to be printed
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.TP
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.B --hintpolicy=[exact | subset | ignore]
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Set the policy for how irq kernel affinity hinting is treated. Can be one of:
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.P
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.I exact
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irq affinity hint is applied unilaterally and never violated
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.P
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.I subset
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irq is balanced, but the assigned object will be a subset of the affintiy hint
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.P
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.I ignore
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irq affinity hint value is completely ignored
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.TP
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.B --powerthresh=<threshold>
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Set the threshold at which we attempt to move a cpu into powersave mode
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If more than <threshold> cpus are more than 1 standard deviation below the
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average cpu softirq workload, and no cpus are more than 1 standard deviation
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above (and have more than 1 irq assigned to them), attempt to place 1 cpu in
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powersave mode. In powersave mode, a cpu will not have any irqs balanced to it,
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in an effort to prevent that cpu from waking up without need.
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.SH "ENVIRONMENT VARIABLES"
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.TP
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.B IRQBALANCE_ONESHOT
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Same as --oneshot
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.TP
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.B IRQBALANCE_DEBUG
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Same as --debug
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.TP
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.B IRQBALANCE_BANNED_CPUS
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Provides a mask of cpus which irqbalance should ignore and never assign interrupts to
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.TP
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.B IRQBALANCE_BANNED_INTERRUPTS
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A list of space delimited IRQ numbers that irqbalance should not touch
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.SH "Homepage"
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http://code.google.com/p/irqbalance
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