Lines Matching full:item
72 \item Run \texttt{blktrace}, specifying whatever devices and other
76 \item After tracing completes, run \texttt{blkrawverify}, specifying
87 \item Run \texttt{blkparse} with the \texttt{-d} option specifying
96 \item Run \texttt{btt} specifying the file produced by
108 \item[average component times across all IOs] The time line of each IO
112 \item Time needed to insert or merge an incoming IO onto the request
124 \item[Q2G] Time needed to \emph{get} a request (get request
127 \item[G2I] Time needed to put that request onto the request
135 \item Time spent on the request queue. The average time from when
144 \item Driver and device time -- the average time from when the
154 \item \emph{Q2Q} which measures the time between queue traces
158 \item \emph{Q2C} which measures the times for the complete life cycle
187 \item[Device Overhead]
195 \item Q2G + Q2I
199 \item Q2M
211 \item[Device Merge Information]
232 \item[Device Seek Information]
262 \item[Request Queue Plug Information]
279 \item Explicit unplug request from some subsystem in the kernel.
281 \item Timed unplugs, due to a request queue exceeding some temporal
288 \item[IOs per Unplug \& Unplugs-due-to-timeout]
319 \item[Active Requests At Q Information]
354 \item[Per Process] As traces are emitted, they are tagged with the
379 \item[Per Process Averages] The average columns from the above charts,
382 \item[Per Device] Similar to the per-process display, \texttt{btt}
401 \item[Per Device Averages] The average columns from the above charts,
404 \item[Q2D Histogram] A display of histogram buckets for the Q to D times
432 \item[\emph{file}.dat] This file provides a notion of \emph{activity}
436 \item[\emph{file}\_qhist.dat] Provides histogram data for the size of
439 \item[\emph{file}\_dhist.dat] Provides histogram data for the size
449 \item[subset of \texttt{.avg} data, easily parsed ] When the
455 \item[iostat] iostat-like data can be distilled by btt, and is
458 \item[per IO detail] Each and every IO traced can be output in a form
463 \item[iostat] Latency information -- both Q2d, D2c and Q2C --
467 \item[seek details] A set of data files containing all IO-to-IO
471 \item[unplug histogram details] A data file per device containing
527 \item First there is the total system activity -- meaning activity
530 \item Next comes per-device activity information -- for each device
533 \item Last we present pairs per-process.
626 \item queue traces
627 \item get request traces
628 \item insert traces
629 \item merge traces
630 \item issue traces
631 \item completion traces
632 \item remap traces
667 \item Device major/minor.
669 \item Time of the trace (seconds from the start of the run)
671 \item Trace type
673 \item start block + number of blocks
694 \item Combined data -- all read and write IOs
696 \item Read data -- just seek deltas for reads
698 \item Write data -- just seek deltas for writes
705 \item The prefix provided as the argument to the \texttt{-s} option.
706 \item The major and minor numbers of the device separated by a comma.
707 \item The string \texttt{q2q} or \texttt{d2d}, indicating the Q2Q or
709 \item One of the following characters:
711 \item[r] For read (device to system) IOs
712 \item[w] For write (system to device) IOs
713 \item[c] Combined -- both read and write IOs
753 \item[default] By default, the seek distance is calculated as the
759 \item[\texttt{-a}] If the \texttt{-a} or \texttt{--seek-absolute}
782 \item[column 1] Midway point in time for this span, or: \hfill$\alpha +
785 \item[column 2] Average seeks per second over this span, or: \hfill$\nu /
854 \item[\emph{prefix}\_\emph{device}\_r.dat] All read block numbers are
858 \item[\emph{prefix}\_\emph{device}\_w.dat] All write block numbers are
862 \item[\emph{prefix}\_\emph{device}\_c.dat] All block numbers (read
