Title: Low bandwidth: Fetch OpenBSD sources
       Author: Solène
       Date: 09 November 2017
       Tags: openbsd70 openbsd versioning
       Description: 
       
       When you fetch OpenBSD src or ports from CVS and that you want to save
       bandwidth during the process there is a **little** trick that change
       everything: **compression**
       
       Just add `-z9` to the parameter of your cvs command line and the
       remote server will send you compressed files, saving 10 times the
       bandwidth, or speeding up 10 times the transfer, or both (I'm in the
       case where I have differents users on my network and I'm limiting my
       incoming bandwidth so other people can have bandwidth too so it is
       important to reduce the packets transffered if possible).
       
       The command line should looks like:
       
           $ cvs -z9 -qd anoncvs@anoncvs.fr.openbsd.org:/cvs checkout -P src
       
       Don't abuse this, this consumes CPU on the mirror.