As discussed here http://lkml.org/lkml/2008/1/27/243 IMHO most users don't want/need CONFIG_FAIR_GROUP_SCHED but the default value is set to "yes". Whats about changing the Kconfig file to set the default to "n" ? Reproducible: Always
We'll watch the upstream thread and wait to see if this change is committed to the mainline kernel development tree. Out policy is to usually wait until a change has been committed to Linus' git repo before we backport it to gentoo-sources. For my info: /init/Kconfig
Although in the middle of a longer discussion at lkml it seems that at least the app-misc/dnetc package should add something like this # fair group cpu scheduler # [[ -d /sys/kernel/uids/ ]] && echo 2 > /sys/kernel/uids/$(grep -w dnetc /etc/passwd | cut -d: -f3)/cpu_share to local.start or sth. similar file, isn't it ?
Please reopen if upstream commit a patch which changes the default. We tend to avoid changing these things downstream. Feel free to open a new bug for the dnetc package.
