[Aoetools-discuss] Throughput reality (12MB/s) vs hdparm (73MB/s)

[axb <ax...@do...>]

Hi all,

I'm new to aoe and am having some problems with throughput.  Hdparm -t
gives me ~73MB/S which is great.  But real world file copying is only
getting ~12MB/S which isn't so great.

The link has the capability for throughput over 110MB/s (FTP) and there
is little other traffic going on (network idle is ~250bytes/sec).

Ive read the coraid EtherDrive FAQ and others for background.  Some
history on this mailing list have exactly this performance.  There is
some suggestion that this performance is normal and that higher
throughput's can be obtained by striping over multiple vblade's, but I'm
not sure..

I'm using the following setup -
---------------------------------------------------------
Server:
AMD64 Ubuntu Linux - Gutsy
aoetools 11-1.2
RAID 5 SATA2

Client:
AMD64 Ubuntu Linux Edgy
aoetools 11-1.2
U320 SCSI

Commands I used:
Server (its an lvm partition):
 vblade 1 1 eth0 /dev/lvmdev/blade 
Client : 
 aoediscover
 aoestat {yields: e1.1        53.687GB   eth0 up}
 mkfs -t reiserfs /dev/etherd/e1.1
 mount /dev/etherd/e1.1 /srv/blade
 time cp /usr/local/src/testfile /srv/blade
---------------------------------------------------------

Any advice? it ~12MB/S normal for single vblade throughput on local Gbit
switch?

Cheers,
Andy.


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