So we are in process of moving all our servers from CentOS 7 to Debian 12 and have noticed a significant increase in disk activity for the same configuration and the same software load compared to CentOS.
For example, when running our proprietary Java application, we see around double the disk usage on an iotop report compared to a CentOS 7 install. The also seems to be the case with high workloads on a MySQL setup.
We've tried changing sysctl options to see they will change behaviour and nothing seems to work.
I've also tried having swap on or off to see if this changes the behaviour, which it doesn't.
We also tried using xfs and ext4 for the filesystems seeing as centos defaults to using xfs and debian to ext4. No difference.
We've replicated this behaviour across VMs and physical machine installs, all with the same configuration. The all exhibit the same behaviour
Does anyone know if this is a normal for Debian compared to CentOS and if not, what's the best way to troubleshoot? Is it actually an issue we should are about? Is it just reporting wrong?
This is quite a crucial thing for us to fix as it will determine whether we stick with using Debian or more to a different RHEL based distro.
Thanks.
For example, when running our proprietary Java application, we see around double the disk usage on an iotop report compared to a CentOS 7 install. The also seems to be the case with high workloads on a MySQL setup.
We've tried changing sysctl options to see they will change behaviour and nothing seems to work.
I've also tried having swap on or off to see if this changes the behaviour, which it doesn't.
We also tried using xfs and ext4 for the filesystems seeing as centos defaults to using xfs and debian to ext4. No difference.
We've replicated this behaviour across VMs and physical machine installs, all with the same configuration. The all exhibit the same behaviour
Does anyone know if this is a normal for Debian compared to CentOS and if not, what's the best way to troubleshoot? Is it actually an issue we should are about? Is it just reporting wrong?
This is quite a crucial thing for us to fix as it will determine whether we stick with using Debian or more to a different RHEL based distro.
Thanks.
Statistics: Posted by marcb — 2024-02-21 10:04 — Replies 0 — Views 38