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    2.0 Mbytes of vectors used (32\%)
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    2.0 Mbytes of vectors used (32\%)
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}
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}
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  Here the last two lines give the current memory usage rounded up to
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  Here the last two lines give the current memory usage rounded up to
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  the next 0.1Mb and as a percentage of the current trigger value.
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  the next 0.1Mb and as a percentage of the current trigger value.
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  The first line gives a breakdown of the number of garbage collections
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  The first line gives a breakdown of the number of garbage collections
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  at various levels (for an explanation see the \sQuote{R Internals} manual).
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  at various levels (for an explanation see \manual{R-ints}{}).
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}
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}
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\value{
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\value{
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  \code{gc} returns a matrix with rows \code{"Ncells"} (\emph{cons
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  \code{gc} returns a matrix with rows \code{"Ncells"} (\emph{cons
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    cells}), usually 28 bytes each on 32-bit systems and 56 bytes on
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    cells}), usually 28 bytes each on 32-bit systems and 56 bytes on
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  to \code{gc(reset = TRUE)} (or since \R started).
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  to \code{gc(reset = TRUE)} (or since \R started).
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  \code{gcinfo} returns the previous value of the flag.
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  \code{gcinfo} returns the previous value of the flag.
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}
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}
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\seealso{
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\seealso{
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  The \sQuote{R Internals} manual.
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  \manual{R-ints}{}.
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  \code{\link{Memory}} on \R's memory management,
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  \code{\link{Memory}} on \R's memory management,
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  and \code{\link{gctorture}} if you are an \R developer.
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  and \code{\link{gctorture}} if you are an \R developer.
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  \code{\link{gc.time}()} reports \emph{time} used for garbage collection.
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  \code{\link{gc.time}()} reports \emph{time} used for garbage collection.