Qlik Community

Qlik Sense Deployment & Management

Discussion board where members learn more about Qlik Sense Installation, Deployment and Management.

Qlik® Product Spotlight: Discover what’s possible. Get more from our products.
See for yourself. Register today.
New Contributor II

Performance issue - Tech question


We are having some performance issues on the QV server.

Our IT monitored the server (virtual) and noticed disk subsystem latency.

They are asking me the following question:

From our monitoring tools we observe that QlickView writes the data in the big blocks (256k). In order to configure virtual flash we have to be sure about it.

Can you approve?

Performance issue - IO Frequency.png

Does anyone knows the answer?


1 Reply
New Contributor III

Re: Performance issue - Tech question


I just can give you my personal observations:

big files, like qvw or qvd are written in big blocks, small files, like configs,logs , meta/shared files, are written in small blocks.

So we configured the storage with logs and configs apart of "main" storage for the data (qvw/qvd). Also we've configured bigger block size on the "data" storage.