My Oracle Support Banner

Exadata: DB Processes Stuck In "rds_ib_flush_mr_pool" although there is no CPU/memory Load. (Doc ID 2622510.1)

Last updated on MAY 20, 2021

Applies to:

Linux OS - Version Oracle Linux 7.6 to Oracle Linux 7.6 [Release OL7U6]
Linux x86-64


Exadata: A number of DB processes going to D state with wchan value "rds_ib_flush_mr_pool", although there is no CPU/memory load.

The PID stack is as follows:

=== STACK ===
[] rds_ib_flush_mr_pool+0x35d/0x790 [rds_rdma]
[] rds_ib_flush_mrs+0x5a/0x80 [rds_rdma]
[] rds_rdma_drop_keys+0x164/0x190 [rds]
[] rds_release+0x8f/0x100 [rds]
[] sock_release+0x25/0x90
[] sock_close+0x12/0x20
[] __fput+0xe7/0x220
[] ____fput+0xe/0x10
[] task_work_run+0xba/0x100
[] do_notify_resume+0x8d/0xa0
[] ksplice_do_notify_resume+0x1c/0x40
[] 0xffffffffffffffff


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.