Disk (mdraid) performance degradation with kernel-2.6.32-754.14.2.el6.x86_64
Posted: 2019/06/09 11:25:06
Hi
Today I've updated to kernel-2.6.32-754.14.2.el6.x86_64 and this generated a terrible drop in disk performance on my raid.
As a reference dump give an average speed of about 120 mb/sec using kernel-2.6.32-754.12.1.el6.x86_64 while on kernel-2.6.32-754.14.2.el6.x86_64 I get only about 63mb/s (not enough to feed my backup tape drive)
Meanwhile I had to downgrade to previous kernel.
Do you have any idea of why does this happen?
Thank You
K.
Today I've updated to kernel-2.6.32-754.14.2.el6.x86_64 and this generated a terrible drop in disk performance on my raid.
As a reference dump give an average speed of about 120 mb/sec using kernel-2.6.32-754.12.1.el6.x86_64 while on kernel-2.6.32-754.14.2.el6.x86_64 I get only about 63mb/s (not enough to feed my backup tape drive)
Meanwhile I had to downgrade to previous kernel.
Do you have any idea of why does this happen?
Thank You
K.