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diff --git a/src/libs/7zip/unix/DOCS/MANUAL/commands/bench.htm b/src/libs/7zip/unix/DOCS/MANUAL/commands/bench.htm deleted file mode 100644 index 14f456cd3..000000000 --- a/src/libs/7zip/unix/DOCS/MANUAL/commands/bench.htm +++ /dev/null @@ -1,79 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> -<HTML> -<HEAD> - <META http-equiv="Content-Type" content="text/html; charset=Windows-1252"> - <TITLE>b (Benchmark) command</TITLE> - <LINK href="style.css" rel="stylesheet" type="text/css"> -</HEAD> - -<BODY> - -<H1>b (Benchmark) command</H1> - -<P>Measures speed of the CPU and checks RAM for errors.</P> - -<H4>Syntax</H4> - -<PRE class="syntax"> -b [number_of_iterations] [-mmt{N}] [-md{N}] [-mm={Method}] -</PRE> - -<P>There are two tests:<P> -<OL> - <LI>Compressing with LZMA method - <LI>Decompressing with LZMA method -</OL> - -<P>The benchmark shows a rating in MIPS (million instructions per second). -The rating value is calculated from the measured CPU speed and it -is normalized with results of Intel Core 2 CPU with multi-threading option -switched off. So if you have Intel Core 2 Duo, -rating values must be close to real CPU frequency.</P> - -<P>You can change the upper dictionary size to increase memory usage by -md{N} switch. -Also, you can change the number of threads by -mmt{N} switch.</P> - -<P>The <B>Dict</B> column shows dictionary size. For example, 21 means 2^21 = 2 MB.</P> - -<P>The <B>Usage</B> column shows the percentage of time the processor is working. -It's normalized for a one-thread load. For example, 180% CPU Usage for 2 threads -can mean that average CPU usage is about 90% for each thread.</P> - -<P>The <B>R / U</B> column shows the rating normalized for 100% of CPU usage. -That column shows the performance of one average CPU thread.</P> - -<P><B>Avr</B> shows averages for different dictionary sizes.</P> -<P><B>Tot</B> shows averages of the compression and decompression ratings.</P> - -<P>Compression speed and rating strongly depend on memory (RAM) latency. - -<P>Decompression speed and rating strongly depend on the integer performance of the CPU. -For example, the Intel Pentium 4 has big branch -misprediction penalty (which is an effect of its long pipeline) and pretty slow -multiply and shift operations. So, the Pentium 4 has pretty low decompressing ratings.</P> - -<P>You can run a CRC calculation benchmark by specifying -mm=crc. -That test shows the speed of CRC calculation in MB/s. The first column shows the size of the block. -The next column shows the speed of CRC calculation for one thread. The other columns are results -for multi-threaded CRC calculation.</P> - - -<H4>Examples</H4> - -<PRE class="example"> -7z b -</PRE> -runs benchmarking. - -<PRE class="example"> -7z b -mmt1 -md26 -</PRE> -runs benchmarking with one thread and 64 MB dictionary. - -<PRE class="example"> -7z b 30 -</PRE> -<P>runs benchmarking with default settings for 30 iterations.</P> - -</BODY> -</HTML> |