On 2018-09-27 18:01, 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: > > > Mem: 4335M Active, 4854M Inact, 7751M Laundry, 9410M Wired, 48K Buf, > 5332M Free > > ARC: 5235M Total, 4169M MFU, 497M MRU, 172K Anon, 97M Header, 471M Other > > 3479M Compressed, 5930M Uncompressed, 1.70:1 Ratio > > Swap: 2048M Total, 2009M Used, 39M Free, 98% Inuse > > > > I've not seen this happen before on ZFS systems, so is it a regression > in 12? > > It doesn't appear like ZFS is dominating memory usage there. Using less than the 8GB you indicated that setting the max to solved the problem... -- Allan Jude
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