5308XL48G Performance

[Karlo Kuhar]

Hi all!

I'm unable to get network utilization on any port higher then 45%.
I don't know is that normal or not but using state of the art Nexans Cat7/Cat6 cables, Intel Gigabit cards in IBM servers that seems pretty low for me.
I have upgraded fw to 10.04 few days ago and I don't have port off/on erros any more but network speed is still in at 100tx range.

Here is iperf log:

[1912] local 192.168.0.220 port 3170 connected with 192.168.0.249 port 5001
[ ID] Interval Transfer Bandwidth
[1912] 0.0-10.0 sec 259 MBytes 217 Mbits/sec

Any ideas?

Best regards,
Karlo

[Regnar Bang Lyngsø_2]

No but a few questions:

1. Connected to same switch? If not - try if possible. If so - what happens if you use a crossed cable instead.

2. Testing with TCP or UDP traffic? If testing switch throughput - use UDP.

Regnar

[SCOOTER]

Hello Karlo,

There are more bottlenecks to check. Like the sort of data is it bulk or smaller pieces? Or the HW and SW config of the host and dest, example: access-speeds (read-write on HDD's) etc.

Regards,

SCOOTER

[Karlo Kuhar]

Here is additional info...

Both servers have Xeon 3GHz CPUs, 3Ware SATA RAID with RAID 5 volumes and 1 Gig memory.

They are connected to same switch using CAT6 STP cable, one in slot B other in slot C

I will try to connect them with crossover cable afternoon to check direct connection performance.


I don't know if I'm right but someone told me that 53xx can't have full performance intransfer within same slot ?!? Correct me if I'm wrong...

Best regards,
K.

[Karlo Kuhar]

To Scooter:

I have notices that when I was trying to copy Acronis image file (13Gb) to another server. I took 6,5 minutes to complete.

What do you think?

Best regards,
K.