Date: Sun, 20 Oct 2019 18:45:45 -0600 From: Warner Losh <imp@bsdimp.com> To: bob prohaska <fbsd@www.zefox.net> Cc: freebsd-arm@freebsd.org Subject: Re: Swap_pager messages when no swap is in use Message-ID: <CANCZdfo-023ntQn6PswS_GwqyyYMCacY74rwpyBXcio5Zcm6RA@mail.gmail.com> In-Reply-To: <20191021004317.GB14127@www.zefox.net> References: <20191021000433.GA14127@www.zefox.net> <CANCZdfqpH61iaZFXJsdTJhJE%2B95=FXvit6AjvomFOZkMe=8XYg@mail.gmail.com> <20191021004317.GB14127@www.zefox.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, Oct 20, 2019, 6:43 PM bob prohaska <fbsd@www.zefox.net> wrote: > On Sun, Oct 20, 2019 at 06:14:37PM -0600, Warner Losh wrote: > > On Sun, Oct 20, 2019, 6:04 PM bob prohaska <fbsd@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. > > > > Ok, but why is the swapping system complaining when there's no swapping > going on? > The swap pager is complaining. It is used for things other than pure swapping to a swap partition... Warner Thanks for reading, > > bob prohaska > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CANCZdfo-023ntQn6PswS_GwqyyYMCacY74rwpyBXcio5Zcm6RA>