Low performance

Kevin Korb kmk at sanitarium.net
Tue Jan 3 12:05:42 MST 2012


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Are these files new files being initially copied or are they modified
files being updated?

Does --whole-file or --inplace make a difference?

On 01/03/12 08:42, R. Pietsch wrote:
> 
> Hi!
> 
> I do a rsync between 2 machines. The throughput is only 2
> MByte/Sec.
> 
> Each machine is a Supermicro server with 2 x 8 Core Opteron 6128 64
> GByte of ECC RAM 1 LSI MegaRAID SAS 9280-24i4e 24 x 2TByte SATA
> Disks as a RAID6 2 Intel Corporation 82599EB 10-Gigabit SFI/SFP+
> Network-cards
> 
> Both run Ubuntu 11.04 64Bit. Both use rsync version 3.0.7  protocol
> version 30
> 
> There are no errors reported. The local read and write rate to the
> disks is 1,1 GB/s. A network test shows 800MByte/s over the direct
> coupled network-cards. The CPU-usage is  5 to 7% of one core. 
> Memory-usage is 1703 out of 64557MB. There are no other jobs
> running on the two machines. The LSI controllers both say: State:
> Optimal
> 
> 
> machine A has a rsync-daemon with the following configuration: 
> ---------- read only = false use chroot = false hosts allow =
> 10.99.11.0/24 [Daten1] path = /var/daten1 use chroot = yes read
> only = yes list = yes uid = root gid = root strict modes = yes 
> ignore errors = no ignore nonreadable = yes transfer logging = no 
> timeout = 600 refuse options = checksum dry-run dont compress = * 
> ----------
> 
> machine B runs:
> 
> /usr/bin/rsync -ax --numeric-ids --delete --delete-excluded \ 
> --exclude-from=/Backup/RB_None.excl \ 
> --link-dest=/Backup/Base/xxxxx \ rsync://root@10.99.11.11/Daten1/
> \ /Backup/Base/yyyyyyy \ --no-c --no-z
> 
> The files are all about 8 MB in size.
> 
> 8302592 100%    1.98MB/s    0:00:04 (xfer#861,
> to-check=51173/94679)
> 
> The same - slow - transfer happens at 1GB and 5GB files.
> 
> 
> Any ideas what can cause this slow transmission?
> 
> 

- -- 
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~
	Kevin Korb			Phone:    (407) 252-6853
	Systems Administrator		Internet:
	FutureQuest, Inc.		Kevin at FutureQuest.net  (work)
	Orlando, Florida		kmk at sanitarium.net (personal)
	Web page:			http://www.sanitarium.net/
	PGP public key available on web site.
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.17 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAk8DUYYACgkQVKC1jlbQAQePuwCeN8FyFNmWlXYOBx5CrBd8VHod
hq8AmQFSHAMdOIV0SHLAb3iEEHWLnxTd
=932T
-----END PGP SIGNATURE-----


More information about the rsync mailing list