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From: Chris Ross <cross+freebsd@distal.com>
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Subject: Re: swap_pager: cannot allocate bio
Date: Fri, 31 Dec 2021 21:08:48 -0500
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Cc: Andriy Gapon <avg@freebsd.org>,
 freebsd-fs <freebsd-fs@freebsd.org>
To: Mark Johnston <markj@freebsd.org>
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> On Nov 25, 2021, at 00:18, Chris Ross <cross+freebsd@distal.com> =
wrote:
>>> On Nov 20, 2021, at 13:23, Mark Johnston <markj@freebsd.org =
<mailto:markj@freebsd.org>> wrote:
>>>=20
>>> Here is a patch which tries to address the proximate cause of the
>>> problem. =20

>=20
> The system is still cooking along, running the job that previously was
> causing it to get stuck after 48ish hours.  It=E2=80=99s been running =
more than
> 80 hours now, so a definite improvement.
>=20
> zfs-stats reports things as stable, 80% cache hit ratio, 64GB max arc,
> ~85% of that currently as =E2=80=9Cadaptive target=E2=80=9D.  If =
there=E2=80=99s anything you
> would like to get from the system, data-wise, let me know.  Happy to
> share, and help get this fix, or a different better fix if needed, =
into the
> tree.

Hello all.  Just was curious if anyone had a different solution for the
problem I was seeing, or if not, if the patch from Mark that I manually
applied can be integrated to the tree for current, and MFR=E2=80=99d to =
13.

Thank you.  Please update me as to the current status of this issue,
so I don=E2=80=99t update and lose functionality at some later point.  =
:-)

                 - Chris=

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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><br =
class=3D""><div><br class=3D""><blockquote type=3D"cite" class=3D""><div =
class=3D"">On Nov 25, 2021, at 00:18, Chris Ross &lt;<a =
href=3D"mailto:cross+freebsd@distal.com" =
class=3D"">cross+freebsd@distal.com</a>&gt; wrote:</div><div =
class=3D""><div style=3D"word-wrap: break-word; -webkit-nbsp-mode: =
space; line-break: after-white-space;" class=3D""><div =
class=3D""><blockquote type=3D"cite" class=3D""><div class=3D""><div =
style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; line-break: =
after-white-space;" class=3D""><div class=3D""><blockquote type=3D"cite" =
class=3D""><div class=3D"">On Nov 20, 2021, at 13:23, Mark Johnston =
&lt;<a href=3D"mailto:markj@freebsd.org" =
class=3D"">markj@freebsd.org</a>&gt; wrote:</div><div class=3D""><br =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none;" class=3D""><span =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; float: none; =
display: inline !important;" class=3D"">Here is a patch which tries to =
address the proximate cause of the</span><br style=3D"caret-color: =
rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; text-align: start; text-indent: 0px; text-transform: none; =
white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none;" class=3D""><span style=3D"caret-color: rgb(0, 0, =
0); font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none; float: none; display: inline !important;" =
class=3D"">problem. &nbsp;</span><br style=3D"caret-color: rgb(0, 0, 0); =
font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none;" =
class=3D""></div></blockquote></div></div></div></blockquote></div></div><=
/div></blockquote><br class=3D""><blockquote type=3D"cite" class=3D""><div=
 class=3D""><div style=3D"word-wrap: break-word; -webkit-nbsp-mode: =
space; line-break: after-white-space;" class=3D""><div class=3D""><br =
class=3D""></div><div class=3D"">The system is still cooking along, =
running the job that previously was</div><div class=3D"">causing it to =
get stuck after 48ish hours. &nbsp;It=E2=80=99s been running more =
than</div><div class=3D"">80 hours now, so a definite =
improvement.</div><div class=3D""><br class=3D""></div><div =
class=3D"">zfs-stats reports things as stable, 80% cache hit ratio, 64GB =
max arc,</div><div class=3D"">~85% of that currently as =E2=80=9Cadaptive =
target=E2=80=9D. &nbsp;If there=E2=80=99s anything you</div><div =
class=3D"">would like to get from the system, data-wise, let me know. =
&nbsp;Happy to</div><div class=3D"">share, and help get this fix, or a =
different better fix if needed, into the</div><div =
class=3D"">tree.</div></div></div></blockquote><br =
class=3D""></div><div>Hello all. &nbsp;Just was curious if anyone had a =
different solution for the</div><div>problem I was seeing, or if not, if =
the patch from Mark that I manually</div><div>applied can be integrated =
to the tree for current, and MFR=E2=80=99d to 13.</div><div><br =
class=3D""></div><div>Thank you. &nbsp;Please update me as to the =
current status of this issue,</div><div>so I don=E2=80=99t update and =
lose functionality at some later point. &nbsp;:-)</div><div><br =
class=3D""></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp;- Chris</div></body></html>=

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