lastes sources don't include "drop_cache" option
Linda A. Walsh
rsync at tlinx.org
Mon Dec 2 01:30:58 MST 2013
Was there some reason that patch got dropped?
Otherwise rsync eats up all the buffer memory.
Note -- I tried directio -- didn't work due to alignment
issues -- buffers have to be aligned to sectors.
The kernel, if I remember correctly, has been on again/off again
on requiring alignment on directio -- because most of the drivers
and devices do for directio to work, at.
"dd" throughput is about 20-30% faster with direct_IO (on the target side,
not on the read side... no benefit on read -- but that's where drop
More information about the rsync