On 16 December 2017 at 20:34, Mark Millard <mar...@dsl-only.net> wrote:
> 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:
>>> 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.
>>> 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.

Sorry about the delay:

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Eitan Adler
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