Rsync push is slower compared to pull
dag at wieers.com
Wed Aug 23 12:50:39 GMT 2006
On Wed, 23 Aug 2006, Srinivasa Battula wrote:
> On Wed, 32 Aug 2006, Dag Wieers wrote:
> > On Wed, 23 Aug 2006, Srinivasa Battula wrote:
> > > It has been observed that rsync push mode is much slower when compared
> > > to pull (On Identical scenarios). Building/receiving file list takes
> > > almost same time. But data transfer is much slower, whose transfer
> > > ratios are ranging from 1:3 to 1:5. On pull operation data transfer
> > > speed is consistently around 3.5 MB/Sec and it reached 10 MB/Sec.
> > > However, on push the maximum it could reach is around 2 MB/Sec and hogs
> > > around 1MB/Sec. Why is this difference? Please help me on this...
> > Do these identical scenarios also include changing the sender and
> > receiver
> > for both push and pull ? That would be required to dismiss the network
> > configuration/environment as the possible cause.
> Source and Target remain same. The way rsync is being invoked is
My question implied to urge you to test with the sender and receiver
switched. And compare those results as well. You should end up with 4 sets
of transfer speed data.
Analysing that should make clear if pulling/pushing is the cause, or if it
is the network environment (sender/receiver).
Also make sure that the tests are not influenced by other factors (eg.
other people doing exactly the same test as yours on the same
network/system :)). Doing the tests multiple times during the day may make
it more convincing to state your case.
-- dag wieers, dag at wieers.com, http://dag.wieers.com/ --
[all I want is a warm bed and a kind word and unlimited power]
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