# Linux kernel 4.15-139

**URL:** <https://discourse.datatex.co.za/t/linux-kernel-4-15-139/371>\
**Category:** Voice recording ( Amethyst and iReCall )\
**Tags:** linux\
**Created:** [November 1, 2023, 10:41am UTC](https://discourse.datatex.co.za/t/linux-kernel-4-15-139/371 "2023-11-01T10:41:40Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![LeonvanHeerden](https://discourse.datatex.co.za/letter_avatar_proxy/v4/letter/l/51bf81/32.png) [@LeonvanHeerden](https://discourse.datatex.co.za/u/LeonvanHeerden)\
**Post date:** [November 1, 2023, 10:41am UTC](https://discourse.datatex.co.za/t/linux-kernel-4-15-139/371/1 "2023-11-01T10:41:40Z")

</div>

Check the kernel version:  
`uname -a`

If a server is still running kernel 4.15.0-139-generic to 4.15.0-143-generic, then the server needs to be upgraded to the newer kernel to address performance issues.  
The issue is picked up in the logs and tickets about slow XML processing or Disk writing issues.

Reference:

> **[Bug #1928744 “Disk IO very slow on kernel 4.15.0-142-generic " : Bugs : linux...](https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1928744)**
>
> After upgrading Ubuntu 18.04 kernel from 4.15.0-136-generic to kernel 4.15.0-142-generic disk IOs (writes) are suffering from terrible delay. 
> 
> Time required to write 1GB of data to the dist is ~12 minutes.
>  
> 1GB in 12 minutes:
> strace -ttvvff -o...