MTRR(4) - Device Drivers Manual (amd64) # MTRR(4) - Device Drivers Manual (amd64)
NAME # mtrr - driver for CPU memory range attributes
SYNOPSIS # pseudo-device mtrr 1
DESCRIPTION # The mtrr device provides access to the memory range attributes supported by the MTRRs on AMD64 compatible CPUs.
IOCTL INTERFACE # Several architectures allow attributes to be associated with ranges of physical memory. These attributes can be manipulated via ioctl() calls performed on /dev/mem or /dev/xf86.
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MTRR(4) - Device Drivers Manual (i386) # MTRR(4) - Device Drivers Manual (i386)
NAME # mtrr - driver for CPU memory range attributes
SYNOPSIS # pseudo-device mtrr 1
DESCRIPTION # The mtrr device provides access to the memory range attributes supported by the MTRRs on Pentiums.
IOCTL INTERFACE # Several architectures allow attributes to be associated with ranges of physical memory. These attributes can be manipulated via ioctl() calls performed on /dev/mem or /dev/xf86.
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PCTR(1) - General Commands Manual # PCTR(1) - General Commands Manual
NAME # pctr - display CPU performance counters
SYNOPSIS # pctr [-AEeIiklMSu] [-f funct] [-m umask] [-s ctr] [-t thold]
DESCRIPTION # The pctr program is a sample implementation of how to access the pctr(4) pseudo device available on many i386 and amd64 compatible machines.
By default, the pctr command displays the current values of the TSC and any vendor specific counter registers.
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PCTR(4) - Device Drivers Manual (amd64) # PCTR(4) - Device Drivers Manual (amd64)
NAME # pctr - driver for CPU performance counters
SYNOPSIS # pseudo-device pctr 1
DESCRIPTION # The pctr device provides access to the performance counters on AMD and Intel brand processors, and to the TSC on others.
Intel processors have two 40-bit performance counters which can be programmed to count events such as cache misses, branch target buffer hits, TLB misses, dual-issues, interrupts, pipeline flushes, and more.
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PCTR(4) - Device Drivers Manual (i386) # PCTR(4) - Device Drivers Manual (i386)
NAME # pctr - driver for CPU performance counters
SYNOPSIS # pseudo-device pctr 1
DESCRIPTION # The pctr device provides access to the performance counters on AMD and Intel brand processors, and to the TSC on others.
Intel processors have two 40-bit performance counters which can be programmed to count events such as cache misses, branch target buffer hits, TLB misses, dual-issues, interrupts, pipeline flushes, and more.
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