Re: BDR, wal sender, high system cpu, mutex_lock_common

Hi Craig,

Anyway, this OS is guess OS in vmware (vsphere).
Thank for your response and help.

On Tue, Oct 3, 2017 at 8:49 PM, Craig Ringer <craig(at)2ndquadrant(dot)com> wrote:
>
>
> Can you get stacks please?
>
> Use -g
>

# Events: 2K cpu-clock
#
# Overhead Command Shared Object Symbol
# ........ ........ ................. ............................
#
86.96% postgres [kernel.kallsyms] [k] __mutex_lock_common.isra.5
|
--- __mutex_lock_common.isra.5
read

2.85% postgres [kernel.kallsyms] [k] do_raw_spin_lock
|
--- do_raw_spin_lock
|
|--90.48%-- read
|
|--8.33%-- recv
|
--1.19%-- write

2.44% postgres [kernel.kallsyms] [k] mutex_unlock
|
--- mutex_unlock
read

2.03% postgres [kernel.kallsyms] [k] arch_local_irq_restore
|
--- arch_local_irq_restore
read

1.32% postgres postgres [.] ValidXLogRecord
|
--- ValidXLogRecord

1.25% postgres [kernel.kallsyms] [k] mutex_lock
|
--- mutex_lock
read

--
regards

ujang jaenudin | DBA Consultant (Freelancer)
http://ora62.wordpress.com
http://id.linkedin.com/pub/ujang-jaenudin/12/64/bab