Configure write cache size in RAM

[datnus]

Hi guys,
I have read that the data will be write-cache in RAM (normally 1/8 of the RAM) and the intent log will be saved in ZIL.

Which parameter control the size of the write-cache in RAM?
Thanks so much.

 

[datnus]

2) Temporary Write cache. Incoming writes queue up here before being added to the ZFS Intent Log (ZIL), and then ultimately to the live filesystem. This is generally only 200-500 MB, but estimate at least 1 GB.
https://blog.sat.iit.edu/2013/01/how-zfs-uses-ram/

 

[jgreco]

see bug 1531 for exhausting discussion