------- Comment From <email address hidden> 2017-08-18 07:51 EDT-------
Test results with the binary kernel package show the same symptoms, I/Os getting delayed longer than 10 minutes. It seems that those three patches together cause a regression of the "cfq-iosched: fix the delay of cfq_group's vdisktime under iops mode" patch.
So, in summary, with *only* the patch:
5be6b75610cefd1e21b98a218211922c2feb6e08 "cfq-iosched: fix the delay of cfq_group's vdisktime under
iops mode"
I see some improvement of the I/Os delays, although the delays are still too long. But by adding these two patches:
4d608baac5f4e72b033a122b2d6d9499532c3afc "block: Initialize cfqq->ioprio_class in cfq_get_queue()"
142bbdfccc8b3e9f7342f2ce8422e76a3b45beae "cfq: Disable writeback throttling by default"
I see a regression of the delays back to what I was seeing without any patches.
------- Comment From <email address hidden> 2017-08-18 07:51 EDT-------
Test results with the binary kernel package show the same symptoms, I/Os getting delayed longer than 10 minutes. It seems that those three patches together cause a regression of the "cfq-iosched: fix the delay of cfq_group's vdisktime under iops mode" patch.
So, in summary, with *only* the patch:
5be6b75610cefd1 e21b98a21821192 2c2feb6e08 "cfq-iosched: fix the delay of cfq_group's vdisktime under
iops mode"
I see some improvement of the I/Os delays, although the delays are still too long. But by adding these two patches:
4d608baac5f4e72 b033a122b2d6d94 99532c3afc "block: Initialize cfqq->ioprio_class in cfq_get_queue()" f7342f2ce8422e7 6a3b45beae "cfq: Disable writeback throttling by default"
142bbdfccc8b3e9
I see a regression of the delays back to what I was seeing without any patches.