Lines Matching refs:per
41 form of multiple individual traces per IO executed during the traced
92 containing parallel trace streams -- one file per CPU per
288 \item[IOs per Unplug \& Unplugs-due-to-timeout]
369 per process:
382 \item[Per Device] Similar to the per-process display, \texttt{btt}
384 per-device criteria. Here's a portion of this area, displayed showing
458 \item[per IO detail] Each and every IO traced can be output in a form
461 details on this file is included in section~\ref{sec:per-io}.
464 on a per-IO basis can be generated. These are described in
471 \item[unplug histogram details] A data file per device containing
530 \item Next comes per-device activity information -- for each device
533 \item Last we present pairs per-process.
574 red point (representing 8 blocks per IO), whereas the other two had
588 and blue dots are somewhat similar below about 192 blocks per IO going
619 \newpage\section{\label{sec:per-io}Per-IO Data File}
635 The \emph{--per-io-dump} or \emph{-p} option triggers this behavior,
639 stream. The issue and completion traces are replicated per IO.
679 provide per-IO latency information, one for queue time (Q2D), one
767 will trigger \texttt{btt} to output seeks-per-second information. The
769 will indicate the number of seeks per second at that point.
785 \item[column 2] Average seeks per second over this span, or: \hfill$\nu /
795 \caption{\label{fig:sps}Seeks-per-second Chart}
814 [ -m <output name> | --seeks-per-second=<output name> ]
817 [ -p <output name> | --per-io-dump=<output name> ]
818 [ -P <output name> | --per-io-trees=<output name> ]
844 concerning per-process and per-device data (as outlined in
918 files (q2c \& d2c) per device containing a periodic timestamp \&
921 \subsection{\label{sec:o-m}\texttt{--seeks-per-second}\texttt{-m}}
923 Tells \texttt{btt} to output seeks per second information. Each device
943 \subsection{\label{sec:o-p}\texttt{--per-io-dump}/\texttt{-p}}
945 This option tells \texttt{btt} to generate the per IO dump file as
946 discussed in section~\ref{sec:per-io}.
948 \subsection{\label{sec:o-P}\texttt{--per-io-tress}/\texttt{-P}}
1000 histogram information for \emph{unplug} traces on a per device
1032 rate (number of thousands of traces per second), and the real time for