On Fri, 2012-03-23 at 23:12 -0700, Linda Walsh wrote:
> Next -- bench "cp -ax", against rsync -axHAX when it has to copy >75% of
> the data (cp ~6-8x speed). But for file speed, 'dd' is king, as it can
> use large buffers (~16MB gives best results on my local Gbit network),
> but it
> misses all those pesky acls and extended attrs, not to mention file
> perms...*sigh* Compare that to the I/O done 4k at a time by many older
> utils...
cp -ax:
real 0m3.088s
user 0m0.034s
sys 0m3.054s
rsync -axHAX
real 0m15.850s
user 0m19.314s
sys 0m8.816s
dsync's time was over six minutes. Each time I cleared out the
destination folder. dsync is doing something that is taking much, much,
much longer to do.
...Jeff
