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JONATHAN PERKIN @JPERKIN@FEDERATE.ME.UK

Senior Software Engineer at MNX.

I provide https://pkgsrc.smartos.org, a cross-platform package manager for macOS
and illumos. I also help develop SmartOS and TritonDataCenter, a complete open
source cloud stack to run your entire datacenter.

Previously:

* Sysadmin @ Netcraft
* SRE @ BBC
* Lead Release Engineer @ MySQL / Sun / Oracle
* SDE/SRE @ Joyent.

I like playing the piano, making espresso, improving my chess, and running trail
ultramarathons.

Geregistreerd op08 nov 2022Blog https://www.perkin.org.ukGithub
https://github.com/jperkinLichess https://lichess.org/@/jperkin
274 berichten81 volgend311 volgers
BerichtenBerichten en reactiesMedia
3d

Jonathan Perkin @jperkin

Yay, managed to get a place on the Arc Of Attrition 50 in January.

Glad I signed up to the waitlist now, I'd kinda forgotten as it's usually huge
(over 1,000 I think?) and I didn't expect to get in.

Looking forward to some long, wet, and dark training miles over the next few
months.

#TrailRunning #UltraMarathon #MudCrew

0

Jonathan Perkin<p>A very enjoyable Beachy Head <a
href="https://federate.me.uk/tags/Marathon" class="mention hashtag"
rel="tag">#<span>Marathon</span></a>. Just snuck under 5 hours, despite the last
10km along the Seven Sisters being absolutely brutal!</p>
Jonathan Perkin<p>A beautiful day for the annual Gatliff <a
href="https://federate.me.uk/tags/Marathon" class="mention hashtag"
rel="tag">#<span>Marathon</span></a>, a 50km+ <a
href="https://federate.me.uk/tags/Trail" class="mention hashtag"
rel="tag">#<span>Trail</span></a> <a
href="https://federate.me.uk/tags/UltraMarathon" class="mention hashtag"
rel="tag">#<span>UltraMarathon</span></a> where you are given turn by turn
instructions and have to navigate your way to the finish.</p><p>This year we
only went wrong a couple of times, maybe added an extra km at the most, and
comfortably completed 54km in under 8 hours.</p><p>Superb event, fully stocked
checkpoints including lunch and food afterwards, friendly volunteers, and an
absolute bargain at £18.<br /> <a
href="https://www.strava.com/activities/10037356233/" target="_blank"
rel="nofollow noopener noreferrer"><span
class="invisible">https://www.</span><span
class="ellipsis">strava.com/activities/10037356</span><span
class="invisible">233/</span></a></p>
Jonathan Perkin<p>Glorious easy run home after running my 50th <a
href="https://federate.me.uk/tags/parkrun" class="mention hashtag"
rel="tag">#<span>parkrun</span></a>.</p><p>Bit slower than last week, back over
23 minutes again, but I wasn&#39;t able to run all week due to being busy, and
now I have to get back out and carry on with finishing the garden
fence.</p><p>Hoping once that&#39;s all done I&#39;ll be back to regular
training sessions and back on the path to sub 20 at Reigate Priory (a rather
hilly course).</p>
Jonathan Perkin<p>$ dtrace -lvn
&#39;pid$target:*:comm_point_send_udp_msg:entry&#39; -c
/opt/local/sbin/unbound<br />[...]<br /> Argument Types<br /> args[0]: userland
struct comm_point *<br /> args[1]: userland sldns_buffer *<br /> args[2]:
userland struct sockaddr *<br /> args[3]: userland socklen_t<br /> args[4]:
userland int</p><p>Sweet.</p>
Jonathan Perkin<p>Update: The issues with native strip were a red herring, <a
href="https://federate.me.uk/tags/DTrace" class="mention hashtag"
rel="tag">#<span>DTrace</span></a> just didn&#39;t like the test filename being
different to the original. Renaming them back (e.g. in a different directory)
made it work.</p><p>So it&#39;s just GNU strip that does not preserve the
argument information, and so I&#39;ll be writing a <a
href="https://federate.me.uk/tags/pkgsrc" class="mention hashtag"
rel="tag">#<span>pkgsrc</span></a> wrapper to support native strip
instead.</p><p>Will mean a slight increase in binary package size, but well
worth it for debuggable binaries!</p>
Jonathan Perkin<p>Unfortunately I also learned today that argument types for
userland <a href="https://federate.me.uk/tags/DTrace" class="mention hashtag"
rel="tag">#<span>DTrace</span></a> are not preserved in any usable way by either
native strip(1) or GNU strip.</p><p>Some notes in <a
href="https://gist.github.com/jperkin/eca867773bb52472fe263b4de88faeb7"
target="_blank" rel="nofollow noopener noreferrer"><span
class="invisible">https://</span><span
class="ellipsis">gist.github.com/jperkin/eca867</span><span
class="invisible">773bb52472fe263b4de88faeb7</span></a></p><p>That&#39;ll be why
I couldn&#39;t do useful print(args[x]) stuff while debugging the <a
href="https://federate.me.uk/tags/unbound" class="mention hashtag"
rel="tag">#<span>unbound</span></a> issue.</p><p>Hopefully we can figure out a
fix for strip(1) and avoid having to ship unstripped binaries which would
considerably bloat <a href="https://federate.me.uk/tags/pkgsrc" class="mention
hashtag" rel="tag">#<span>pkgsrc</span></a> package sets.</p>
Jonathan Perkin<p>Today I learned Speculative Tracing in <a
href="https://federate.me.uk/tags/DTrace" class="mention hashtag"
rel="tag">#<span>DTrace</span></a> to help narrow down a bug in <a
href="https://federate.me.uk/tags/Unbound" class="mention hashtag"
rel="tag">#<span>Unbound</span></a> 1.18.0 on <a
href="https://federate.me.uk/tags/illumos" class="mention hashtag"
rel="tag">#<span>illumos</span></a> </p><p><a
href="https://github.com/NLnetLabs/unbound/issues/945#issuecomment-1744835397"
target="_blank" rel="nofollow noopener noreferrer"><span
class="invisible">https://</span><span
class="ellipsis">github.com/NLnetLabs/unbound/i</span><span
class="invisible">ssues/945#issuecomment-1744835397</span></a></p><p>Definitely
adding that to my toolkit for next time. Was only after spending a number of
hours code reading and writing manual probes to try and figure out where the
EINVAL was bubbling up from.</p><p>Would be great if we had a repository
somewhere of D scripts to cover a huge range of analysis areas, and help folks
bootstrap themselves into writing their own.</p>
Jonathan Perkin<p>Cats love Scalextric! Who doesn&#39;t?</p><p><a
href="https://federate.me.uk/tags/CatsOfMastodon" class="mention hashtag"
rel="tag">#<span>CatsOfMastodon</span></a> <a
href="https://federate.me.uk/tags/Kittens" class="mention hashtag"
rel="tag">#<span>Kittens</span></a> <a
href="https://federate.me.uk/tags/Scalextric" class="mention hashtag"
rel="tag">#<span>Scalextric</span></a></p>
Jonathan Perkin<p>Beautifully sunny morning for Reigate Priory <a
href="https://federate.me.uk/tags/parkrun" class="mention hashtag"
rel="tag">#<span>parkrun</span></a>, paced it well this week and fitness slowly
returning after the summer, just sneaked in under 23 minutes.</p>
Jonathan Perkin<p>Achievement unlocked: first code committed to a <a
href="https://federate.me.uk/tags/Triton" class="mention hashtag"
rel="tag">#<span>Triton</span></a> repository while one of the new <a
href="https://federate.me.uk/tags/kittens" class="mention hashtag"
rel="tag">#<span>kittens</span></a> has their first lap snooze.</p><p>I&#39;d
say they&#39;re settling in well...</p>
Jonathan Perkin
Jonathan Perkin<p>Updated <a href="https://federate.me.uk/tags/pkgsrc"
class="mention hashtag" rel="tag">#<span>pkgsrc</span></a> bootstrap kits now
available for macOS, available as usual from <a
href="https://pkgsrc.smartos.org/install-on-macos/" target="_blank"
rel="nofollow noopener noreferrer"><span class="invisible">https://</span><span
class="ellipsis">pkgsrc.smartos.org/install-on-</span><span
class="invisible">macos/</span></a></p><p>These include the new and improved <a
href="https://federate.me.uk/tags/pkgin" class="mention hashtag"
rel="tag">#<span>pkgin</span></a> 23.8.1.</p><p>No need to install new bootstrap
kits if you already installed an older one, but you may want to run:</p><p>$
pkg_add -U pkg_install pkgin</p><p>prior to running &quot;pkgin upgrade&quot; so
that the upgrade is performed using the latest tools.</p>
Jonathan Perkin<p>So in the end we gave up with adoption agencies and shelters
as it&#39;s just too stressful and a time waste, and went with a private seller,
but did end up with these two beauties.</p><p>They seem to be settling in well,
and are a lot of fun!</p><p>As always, naming is one of the hardest things,
anyone have any good ideas? They are both girls.</p><p><a
href="https://federate.me.uk/tags/kittens" class="mention hashtag"
rel="tag">#<span>kittens</span></a></p>
Jonathan Perkin<p>One of these days a supermarket delivery van is going to turn
up in the time slot we actually requested, and I&#39;m going to be unprepared
for it.</p>
Jonathan Perkin<p>That feeling of dread when you need to patch some golang
software because a dependency has incorrect OS assumptions.</p><p>In a
reasonable language it&#39;s a one or two line change.</p><p>In golang I have to
make modified copies of files, patch others to exclude the build for that OS,
fight with upstreams to get patches accepted then wait 3 years for downstream
software to update their dependencies, and then fight with go.mod and go.sum
patches to get a forked version used in the meantime.</p><p>So very tiring.</p>
Jonathan Perkin
Jonathan Perkin<p>It&#39;s a pity that Mastodon lacks quote tweets, but in
addition to the post I boosted yesterday, I just wanted to say my own thanks for
<a href="https://federate.me.uk/tags/DTrace" class="mention hashtag"
rel="tag">#<span>DTrace</span></a> reaching 20.</p><p>I use it all the time, and
struggle when working on other systems that do not have it. Only yesterday I
wrote a quick script to verify a code path that lead to this fix: <a
href="https://github.com/NetBSD/pkgsrc/commit/def71d1c1f988e3a2cf3bb86716a2937ce6f48fc"
target="_blank" rel="nofollow noopener noreferrer"><span
class="invisible">https://</span><span
class="ellipsis">github.com/NetBSD/pkgsrc/commi</span><span
class="invisible">t/def71d1c1f988e3a2cf3bb86716a2937ce6f48fc</span></a>.</p><p>It
has found significant performance wins in <a
href="https://federate.me.uk/tags/pkgsrc" class="mention hashtag"
rel="tag">#<span>pkgsrc</span></a> and <a
href="https://federate.me.uk/tags/pkgin" class="mention hashtag"
rel="tag">#<span>pkgin</span></a>, fixed numerous bugs, and helped me understand
systems.</p><p>Thanks <span class="h-card"><a
href="https://mastodon.social/@bcantrill" class="u-url
mention">@<span>bcantrill</span></a></span> and <span class="h-card"><a
href="https://mastodon.social/@ahl" class="u-url
mention">@<span>ahl</span></a></span>!</p>
Jonathan Perkin
Jonathan Perkin<p>It&#39;s been a pretty stressful 24 hours being stuck in
Stockholm due to UK ATC failures, but they are playing Vulfpeck over the
speakers at hotel breakfast so it can&#39;t be all bad?! 😂</p><p>Hopefully our
rearranged flights get us back later today. Norwegian haven&#39;t been the
greatest airline when it comes to communication.</p>
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UITGELICHTE HASHTAGS VAN JONATHAN PERKIN

#pkgsrcLaatste bericht op 03 okt
33
#illumosLaatste bericht op 03 okt
19
#runningLaatste bericht op 18 jul
10



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