Ad
related to: tsc time stamp counter
Search results
Results from the WOW.Com Content Network
The Time Stamp Counter was once a high-resolution, low-overhead way for a program to get CPU timing information. With the advent of multi-core/hyper-threaded CPUs, systems with multiple CPUs, and hibernating operating systems, the TSC cannot be relied upon to provide accurate results — unless great care is taken to correct the possible flaws: rate of tick and whether all cores (processors ...
The documentation of Red Hat MRG version 2 states that TSC is the preferred clock source due to its much lower overhead, but it uses HPET as a fallback. A benchmark in that environment for 10 million event counts found that TSC took about 0.6 seconds, HPET took slightly over 12 seconds, and ACPI Power Management Timer took around 24 seconds. [6]
Read 64-bit Time Stamp Counter (TSC) into EDX:EAX. [m] [a] In early processors, the TSC was a cycle counter, incrementing by 1 for each clock cycle (which could cause its rate to vary on processors that could change clock speed at runtime) – in later processors, it increments at a fixed rate that doesn't necessarily match the CPU clock speed. [n]
If the returned values in EBX and ECX of leaf 15h are both nonzero, then the TSC (Time Stamp Counter) frequency in Hz is given by TSCFreq = ECX*(EBX/EAX). On some processors (e.g. Intel Skylake), CPUID_15h_ECX is zero but CPUID_16h_EAX is present and not zero.
TSC may refer to: Organizations ... Time Stamp Counter, an internal clock present in the IA-32 architecture since the Pentium processor; Terminal Services Client, ...
Many computer systems measure time and date using Unix time, an international standard for digital timekeeping. Unix time is defined as the number of seconds elapsed since 00:00:00 UTC on 1 January 1970 (an arbitrarily chosen time based on the creation of the first Unix system), which has been dubbed the Unix epoch. [6]
3 Nehalem has always-running-TSC on. 1 comment. 4 Tacts not ticks. 1 comment. Toggle the table of contents. Talk: Time Stamp Counter. Add languages. Page contents not ...
TSC also means "Time stamp counter", a register on x86 cpus that's incremeted each instruction. --Jsnow 21:15, 22 Sep 2004 (UTC) See the page TSC for all the possible meanings (in Wikipedia) for that acronym. -- John Broughton 21:05, 26 April 2011 (UTC)
Ad
related to: tsc time stamp counter