On 28/9/18 7:31 am, Rebecca Cran wrote: > I'm running 12.0-ALPHA5 on a laptop which has 32GB RAM and 2GB swap. > I've found it running out of memory when building ports via synth: I > think I've also seen it when running a buildworld. Johannes on > FreeBSDDesktop suggested it might be related to ZFS, and setting > vfs.zfs.arc_max to 8GB *does* appear to have resolved the problem. > > > Shortly after running out of memory (with |"swap_pager_getswapspace(32): > failed" messages)|, the first few lines of 'top' were:
I believe the default arc settings are wrong, arc_max defaults to 1G less than ram, with arc being wired this collides with other ram that may be wired, by default the kernel is allowed to wire 30% of ram which is in addition of any arc allocation. So arc should remain less than 70% of ram. I submitted bug 229764 with this. Also consider any bhyve usage, the -S option will wire guest ram, which one of the bhyve tools enables as default. -- FreeBSD - the place to B...Software Developing Shane Ambler _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
