Swap_pager messages when no swap is in use

[Warner Losh]

On Sun, Oct 20, 2019, 6:04 PM bob prohaska <fbsd at www.zefox.net> wrote:

> While running svnlite to update sources on a Pi3 running -currrent
> I was surprised to notice a flurry of
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 133095, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 136056, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 140560, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 134290, size: 8192
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 124869, size: 16384
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 125113, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 142799, size: 4096
> messages when no swap seemed to be in use. Gstat reported much congestion
> of the microSD card, holding / and half the swap, but there was no obvious
> activity reading or writing swap, just the root partition.
>
> Should this be considered normal? It strikes me as very odd.
>

It took more than 30s for the IO to complete. Sadly, this is normal for
cheap SD cards.

Warner

Thanks for reading,
>
> bob prohaska
>
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