On March 18, 2019 8:20:35 AM PDT, Andriy Gapon <a...@freebsd.org> wrote: > >First, a note that this was observed on a system that runs a fairly old >current >(~ 1 year old) with a fairly long uptime (> 6 months). >I noticed that the system was nearly out of memory, 98% of swap was in >use, >there was less than 1 GB of free memory, several GBs of each of active, >inactive >and laundry memory, and many GBs of wired (mostly ZFS). >I decided to pro-actively reboot the system, but to speed that up I put >the >system to the single-user mode (via shutdown) and then back to >multi-user. So, >there was no real hardware reboot and the kernel kept running. >However, all >userland processes were terminated. > >To my surprise, even while in the single-user mode the swap utilization >didn't >go below 70%. Also, laundry memory remained in multi-GB area, but >let's ignore >this for now. > >I think that the swap could be used only for anonymous memory, so I >expected it >go to zero after the shutdown to the single user mode. >Does anyone have any ideas? >Maybe that's something that has already been fixed? >If not, any ideas on what to look for? >Thanks!
I've had a hunch of this but haven't gone down this rabbit hole to investigate. Related, yesterday I performed a git gc --aggressive. Top did not report any swap used by git and GB of swap were used. I think to help address this we need a reliable reporting tool. Obviously two separate symptoms, not sure if the same cause. -- Pardon the typos and autocorrect, small keyboard in use. Cheers, Cy Schubert <cy.schub...@cschubert.com> FreeBSD UNIX: <c...@freebsd.org> Web: http://www.FreeBSD.org The need of the many outweighs the greed of the few. _______________________________________________ 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"
