On 2017-Dec-16, at 8:23 PM, Eitan Adler <lists at eitanadler.com> wrote:
> On 16 December 2017 at 10:47, Mark Millard <markmi at dsl-only.net> wrote: >> I got a "swap_pager: indefinite wait buffer" notice and looked >> it up. (This was on a rpi2 booted (kernel and world) from a >> USB SSD, swap partition in use instead of a swap file. It >> was building devel/cmake via poudriere-devel .) >> >> https://www.freebsd.org/doc/faq/troubleshoot.html#indefinite-wait-buffer >> reads like it is for page-out to disk: >> >> >> QUOTE >> 5.9. >> >> What does the error swap_pager: indefinite wait buffer: mean? >> >> This means that a process is trying to page memory to disk, and the page >> attempt has hung trying to access the disk for more than 20 seconds. It >> might be caused by bad blocks on the disk drive, disk wiring, cables, or any >> other disk I/O-related hardware. If the drive itself is bad, disk errors >> will appear in /var/log/messages and in the output of dmesg. Otherwise, >> check the cables and connections. >> ENDQUOTE >> >> >> But the code containing the message is for "swread": >> (head -r326888) > > If I understand correctly this is fixed by change "trying to page to" > to "trying to page from" ? In other words this happens on swap-in, > not swap-out. That is my understanding of what I reported. Side note comparing with rpi2 (armv7, cortex-A7): A rpi3 (aarch64, cortex-A53) got a couple of the messages during a build of the same port: devel/cmake . In this case it is emmc attached to the microsd-card slot via an adapter, instead of a USB SSD stick. === Mark Millard markmi at dsl-only.net _______________________________________________ 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"
