[LU-10291] remove concurrent_sends tunable

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.11.0
• Severity: 3
• Assignee: Amir Shehata (Inactive)
• Reporter: Amir Shehata (Inactive)

Description

Concurrent sends tunable was intended to limit the number of in-flight transfers per connection. However queue depth does the exact same job. So for example if the queue depth is negotiated to 16 and concurrent_sends is set to 32, the maximum number of in-flight transfers doesn't exceed 16. There is no need to keep concurrent_sends around since it doesn't add any unique functionality.

Issue Links

• is related to: LU-10459 LBUG o2iblnd_cb.c:991:kiblnd_check_sends_locked()) ASSERTION( conn->ibc_nsends_posted <= conn->ibc_queue_depth ) failed:
• is related to: LU-11931 RDMA packets sent from client to MGS are timing out

Comments

[Peter Jones]

Landed for 2.11

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/30312/
Subject: LU-10291 lnd: remove concurrent_sends tunable
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 8d35d6c9bd85ed3a282aa124b672e50c02322a7d

[Gerrit Updater]

Amir Shehata ([e-mail]) uploaded a new patch: https://review.whamcloud.com/30312
Subject: LU-10291 lnd: remove concurrent_sends tunable
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 53e79a1466aae270787098168ec7db862ce55ddd