Lines Matching refs:Output
40 blktrace is capable of producing tremendous amounts of output in the
48 This document will discuss \texttt{btt} usage, provide some sample output,
56 capabilities and output formats would make the parameter discussion
60 This document refers to the output formats generated by \texttt{btt}
62 output formats prior to that.
102 \newpage\section{\label{sec:output-overview}Output Overview}
104 The major default areas of output provided by \texttt{btt}
140 is represented by a D in the blkparse output, hence its usage in
169 For each row in this output, we provide a minimum, average, maximum
172 in reformatting the output for better display on the printed page.}:
190 as to where IO spend most of the time on average. The following output
315 in the sample output in the immediately preceding table one can see
328 Here is a sample output of this sections:
349 In addition to the default sections output, if one supplies the
351 to \texttt{btt} further sections are output:
426 \newpage\section{\label{sec:data-files}Data Files Output}
428 Besides the averages output by default, the following 3 files are also
445 In addition to the default data files output, there are optional data
458 \item[per IO detail] Each and every IO traced can be output in a form
460 than grepping through a blkparse output file for example). The
468 sector differences can be output, with details found in
472 histogram output for the amount of IOs released at unplug time.
602 \texttt{-I} option can be seen from the following output snippet --
701 The format of the output file names is to have the name generated by
767 will trigger \texttt{btt} to output seeks-per-second information. The
772 \texttt{btt} will just output the time value for the point, and the
790 \texttt{-m} output:
805 [ -B <output name> | --dump-blocknos=<output name> ]
811 [ -I <output name> | --iostat=<output name> ]
812 [ -l <output name> | --d2c-latencies=<output name> ]
814 [ -m <output name> | --seeks-per-second=<output name> ]
816 [ -o <output name> | --output-file=<output name> ]
817 [ -p <output name> | --per-io-dump=<output name> ]
818 [ -P <output name> | --per-io-trees=<output name> ]
819 [ -q <output name> | --q2c-latencies=<output name> ]
820 [ -Q <output name> | --active-queue-depth=<output name> ]
822 [ -s <output name> | --seeks=<output name> ]
826 [ -u <outputoutput name> ]
830 [ -z <output name> | --q2d-latencies=<output name> ]
850 This option will output absolute block numbers to three files prefixed
851 by the specified output name:
855 output, first column is time (seconds), second is the block number,
859 output, first column is time (seconds), second is the block number,
863 and write) are output, first column is time (seconds), second is
889 you want displayed in the output. The format of the string passed is
906 This option triggers \texttt{btt} to generate iostat-like output to the
908 on the output produced.
923 Tells \texttt{btt} to output seeks per second information. Each device
924 being measured can have up to 2 files output: One with Q2Q information
925 and one with D2D seek information. Information on the output produced
929 \textbf{Note: This requires seek output to be selected -- see
937 \subsection{\label{sec:o-o}\texttt{--output-file}/\texttt{-o}}
939 Normally \texttt{btt} sends the statistical output (covered in
940 section~\ref{sec:output-overview}) to standard out, if you specify
1002 number of IOs released. There are 21 output values into the file, as
1033 trace processing and output are displayed. Example (note: the interim
1091 A sample output file would look like:
1119 upon the block numbers output when \texttt{-B} is specified (see
1147 output from btt. If no <files> are specified, it will
1170 Output}
1171 Here is a complete output file from a btt run, illustrating a lot of the
1173 \input{sample-btt-output.tex}
