[LU-10354] Lnet selftest

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.10.1
• Type: Question/Request
• Priority: Critical
• Reporter: ZhangWei
• Assignee: Sonia Sharma (Inactive)
• Resolution: Not a Bug

Environment

CentOS 7.4

• Epic/Theme: Infiniband, lnet, lnet_self

Description

I am testing the performance under the Lustre version 2.10.55, CentOS7.3 with the Lnet_selftest tool. I found some issue:
Client - A
Server - B,C
Testing Lnet_selftest between A and B, using Infiniband network, the bandwidth is 2GB/s. Monitoring the IB bandwidth, A and B are 2GB/S.
Testing Lnet_selftest between A and B,C, also using Infiniband network, the bandwidth is 1GB/s, and Monitoring the IB bandwidth, A and B is 2GB/s,C is 0 GB/s. Swop the B and C location in the lent test group, C's bandwidth is 2GB/s and B is 0 GB/s.
How is this happen ? The Lnet_self test script can be seen in the attachment. Thanks for anyone can help!

Comments

[Peter Jones]

Sonia

Can you please advise?

Peter

[John Hammond]

Could you attach the test output as well?

[ZhangWei]

Hi Peter and Sonia,
This is just an small issue related of mine wrong commands. Thanks for you relay,and this question can be close.

[Peter Jones]

ok thanks