MySQL 5.6 @ AWS RDS read IOPS plateaus lower than write IOPS
I have an RDS MySQL 5.6 instance which plateaus ReadIOPS at around 6.5k. My WriteIOPS is most often lower, but sometimes higher than ReadIOPS, but has never entered such a rigid plateau. The disk was gp2 750 GiB (2250 IOPS) a couple days ago, then gp2 1000 GiB (3000 IOPS), now io1 1000 GiB / 10000 provisioned IOPS, and the plateau level is the same. Instance type is db.r4.xlarge.
Here is a chart which shows the problem:
As strange as it seems, it seems like something in the MySQL side is capping reads. Have enabled all sorts of monitoring in the instance and nothing obvious jumps out.
Is there anything in MySQL itself which would somehow limit the reads (but not the writes)?
mysql amazon-rds
asked 4 mins ago
Rafael AlmeidaRafael Almeida
101
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I have an RDS MySQL 5.6 instance which plateaus ReadIOPS at around 6.5k. My WriteIOPS is most often lower, but sometimes higher than ReadIOPS, but has never entered such a rigid plateau. The disk was gp2 750 GiB (2250 IOPS) a couple days ago, then gp2 1000 GiB (3000 IOPS), now io1 1000 GiB / 10000 provisioned IOPS, and the plateau level is the same. Instance type is db.r4.xlarge.
Here is a chart which shows the problem:
As strange as it seems, it seems like something in the MySQL side is capping reads. Have enabled all sorts of monitoring in the instance and nothing obvious jumps out.
Is there anything in MySQL itself which would somehow limit the reads (but not the writes)?
mysql amazon-rds
asked 4 mins ago
Rafael AlmeidaRafael Almeida
101
New contributor
Rafael Almeida is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I have an RDS MySQL 5.6 instance which plateaus ReadIOPS at around 6.5k. My WriteIOPS is most often lower, but sometimes higher than ReadIOPS, but has never entered such a rigid plateau. The disk was gp2 750 GiB (2250 IOPS) a couple days ago, then gp2 1000 GiB (3000 IOPS), now io1 1000 GiB / 10000 provisioned IOPS, and the plateau level is the same. Instance type is db.r4.xlarge.
Here is a chart which shows the problem:
As strange as it seems, it seems like something in the MySQL side is capping reads. Have enabled all sorts of monitoring in the instance and nothing obvious jumps out.
Is there anything in MySQL itself which would somehow limit the reads (but not the writes)?
mysql amazon-rds
asked 4 mins ago
Rafael AlmeidaRafael Almeida
101
New contributor
Rafael Almeida is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have an RDS MySQL 5.6 instance which plateaus ReadIOPS at around 6.5k. My WriteIOPS is most often lower, but sometimes higher than ReadIOPS, but has never entered such a rigid plateau. The disk was gp2 750 GiB (2250 IOPS) a couple days ago, then gp2 1000 GiB (3000 IOPS), now io1 1000 GiB / 10000 provisioned IOPS, and the plateau level is the same. Instance type is db.r4.xlarge.
Here is a chart which shows the problem:
As strange as it seems, it seems like something in the MySQL side is capping reads. Have enabled all sorts of monitoring in the instance and nothing obvious jumps out.
Is there anything in MySQL itself which would somehow limit the reads (but not the writes)?
mysql amazon-rds
mysql amazon-rds
asked 4 mins ago
Rafael AlmeidaRafael Almeida
101
New contributor
Rafael Almeida is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 mins ago
Rafael AlmeidaRafael Almeida
101
New contributor
Rafael Almeida is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 mins ago
Rafael AlmeidaRafael Almeida
101
New contributor
Rafael Almeida is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 mins ago
Rafael AlmeidaRafael Almeida
101
asked 4 mins ago
Rafael AlmeidaRafael Almeida
101
101
New contributor
Rafael Almeida is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Rafael Almeida is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Rafael Almeida is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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