Add support for fast memory monitoring using smaps_rollup #234
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This PR adds the so-called fast memory monitoring option, which uses the
smaps_rollup
file instead of the standardsmaps
file, as discussed in #219.There are some limitation though. Most notably the
Size
metric is missing in the pre-summed file, where we get the virtual memory measurements, and the fact thatsmaps_rollup
is not supported by some older kernels, e.g.,cc7
. Therefore, we probably need to do a little bit of testing before using this new mode for anything serious.Closes #219