On 05/12/17 10:09, Peter Humphrey wrote: >> I assume using a ramdisk would help with this? I wouldn't want to do a >> > SSD as I assume it would excessively wear by doing compiles. > I use tmpfs, like this: > > $ grep tmpfs /etc/fstab > tmpfs /var/tmp/portage tmpfs noatime,uid=portage,gid=portage,mode=0775 > 0 0 > tmpfs /tmp tmpfs > noatime,nosuid,nodev,noexec,mode=1777 0 0 > > If a tmpfs fills up, the excess gets swapped out, but with 32GB RAM here I > haven't yet seen any swap used at all - not even in an emerge -e world.
Same here. Note that tmpfs defaults to half ram, so that would give you a 16GB /var/tmp/portage. With 16GB ram here, that would probably cause things like emerging libreoffice or firefox or gcc to abort. My fstab has these lines ... note the SIZE option ... # glibc 2.2 and above expects tmpfs to be mounted at /dev/shm for # POSIX shared memory (shm_open, shm_unlink). # (tmpfs is a dynamically expandable/shrinkable ramdisk, and will # use almost no memory if not populated with files) shm /dev/shm tmpfs nodev,nosuid,noexec 0 0 portage /var/tmp/portage tmpfs size=30G,mode=0777 0 0 tmp /tmp tmpfs size=10G,mode=0777 0 0 My swap partitions are twice max ram, so I currently have two 32GB partitions giving me 80GB total ram and swap. (My new system when I get it working maxes out at 64GB ram so I'll have 256GB swap and (currently) 16GB ram) Cheers, Wol
