Hi Greg, Greg Troxel wrote:
> Fri, Oct 20, 2023 at 01:11:15PM -0400, Greg Troxel wrote: >> A different machine has locked up, running recent netbsd-10. I was >> doing pkgsrc rebuilds in zfs, in a dom0 with 4G of RAM, with 8G total >> physical. It has a private patch to reduce the amount of memory used >> for ARC, which has been working well. Are you still seeing the problem below even with limiting the amount of memory ARC can use? > >> All 3 tmux windows show something like > >> > >> [ 373598.5266510] load: 0.00 cmd: bash 21965 [flt_noram5] 0.37u 2.89s > >> 0% 6396k > >> > >> and I can switch among them and ^T, but trying to run top is stuck (in > >> flt_noram5). I'll give it an hour or so, and have a look at the > >> console. I've seen cc1plus processes wedged in either flt_noram or tstile after doing multiple builds, and a reboot is the only way out. I'm using ZFS for everything except swap and some mostly-unused media files that live on an FFS. > So to me this feels like a locking botch in a rare path in zfs. This appears to be the case. Chuck Silvers has some understanding of the problem and I'm helping test, but at this stage there isn't a fix available. :/ Cheers, Simon.
