As far as I can see timestamp and size is the default.
I've turned off compression and I think I'm getting better throughput.
Running 4 rsync tasks and getting sustained transfers for several hours of just over 800Mb/sec :- )
--Russell
-----Original Message-----
From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of John R Pierce
Sent: Tuesday, 31 July 2012 5:16 p.m.
To: centos@xxxxxxxxxx
Subject: Re: rsync question
On 07/30/12 10:05 PM, Smithies, Russell wrote:
> I'm trying to rsync a 8TB data folder containing squillions of small files and it's taking forever (i.e. weeks) to get anywhere.
> I'm assuming the slow bit is check-summing everything with a single
> CPU (even though it's on a 12-core server ;-( ) Is it possible to do something simple like scp the whole dir in one go so they're duplicates in the first instance, then get rsync to just keep them in sync without an initial transfer?
use the rsync mode that goes off file timestamp and size. the checksuming block algorithm is only useful on large files that get small random block changes.
--
john r pierce N 37, W 122
santa cruz ca mid-left coast
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