Simpler Navigation for Servers and Operating Systems - Please Update Your Bookmarks
Completed: a much simpler Servers and Operating Systems section of the Community. We combined many of the older boards, so you won't have to click through so many levels to get at the information you need. Check the consolidated boards here as many sub-forums are now single boards.
If you have bookmarked forums or discussion boards in Servers and Operating Systems, we suggest you check and update them as needed.
BladeSystem Server Blades
cancel
Showing results for 
Search instead for 
Did you mean: 

BL680c G7 RAM read/write/copy less then BL490c G6

mBlaze
Occasional Contributor

BL680c G7 RAM read/write/copy less then BL490c G6

Hi!

We changed the server with BL490c G6 in BL680c G7.
BL490c G6 installed RAM: 48 GB, 4cpu.
BL680c G7 installed RAM:256 GB, 2cpu.
After the transition observed marked decrease in performance of our OLTP system.

The question now was left alone, and for me it is very important:
1. When testing the RAM servers noticed an interesting difference in terms of read/write/latency

Bring values:

BL490c G6


Read 12081 MB/s
Write 7341 MB/s
Copy 10124 MB/s
Latency 73.2 ns

BL680c G7
Read 5639 MB/s
Write 3488 MB/s
Copy 4755 MB/s
Latency 23,8 ns

What was the reason of such a big difference, in almost 50%?

 

Thank you.

3 REPLIES
mBlaze
Occasional Contributor

Re: BL680c G7 RAM read/write/copy less then BL490c G6

Ideas? Thoughts?
KML
Visitor

Re: BL680c G7 RAM read/write/copy less then BL490c G6

how do you measure the performance. Is this local or over the network
mBlazeB
Occasional Visitor

Re: BL680c G7 RAM read/write/copy less then BL490c G6

mixed up in some places the server in the first post, cpu writhe incorrect. right:

BL490c G6 installed RAM: 48 GB, 2сpu.
BL680c G7 installed RAM:256 GB, 4cpu.

Local. memory is installed correctly, no errors.