Faster zlib ?

[dorianps]

I was reading this post (I think by Chris Rorden), which suggests that installing the Cloudflare fork of zlib can yield massive speed improvement when producing .nii.gz files. There is an example at the end of that page.

Has anyone tried this zlib version before? And more generally, what zlib version are you currently using? (I am at v1.2.7 on Centos 7)

What is also confusin is that the Cloudflare fork has stopped at v1.2.8 while the official zlib is much more recent at v1.2.11. So it's unclear to me if the speed improvements from Cloudflare were incorporated in the official development of zlib. Does anyone know?

[gdevenyi]

This is a upstream ITK question, of which there's already some discussion:
InsightSoftwareConsortium/ITK#348

Also, https://github.com/zlib-ng/zlib-ng is trying to drag the "official" zlib implementation forward in a non-breaking way.

[gdevenyi]

Also, technically, its not ITK upstream even, its NIFTI upstream, which also has an open issue: NIFTI-Imaging/nifti_clib#32

[gdevenyi]

Can be closed as its an upstream ITK/NIFTIclib issue to implement.