<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Hi Klaus,<div><br></div><div>we've identified an issue in the glue cache that have been causing drops in the performance.</div><div><br></div><div>Can you test a development branch or do you need fix on top of 9.20?</div><div><br></div><div>Ondrej<br id="lineBreakAtBeginningOfMessage"><div>
<meta charset="UTF-8"><div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); 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; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div style="color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div style="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;">--</div><div style="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;">Ondřej Surý (He/Him)</div><div style="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;">ondrej@isc.org</div><div style="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;"><br></div><div style="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;">My working hours and your working hours may be different. Please do not feel obligated to reply outside your normal working hours.</div></div></div></div>
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<div><br><blockquote type="cite"><div>On 9. 9. 2024, at 10:39, Klaus Darilion via bind-users <bind-users@lists.isc.org> wrote:</div><br class="Apple-interchange-newline"><div><meta charset="UTF-8"><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;"><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">As we still have several timeouts I downgraded our server to 9.18. If you know another workaround or need someone to test new version please let me know.<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Thanks<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Klaus<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="border-width: medium medium medium 1.5pt; border-style: none none none solid; border-color: currentcolor currentcolor currentcolor blue; border-image: none; padding: 0cm 0cm 0cm 4pt;"><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; border-image: none; padding: 3pt 0cm 0cm;"><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><b><span lang="DE">From:</span></b><span lang="DE"><span class="Apple-converted-space"> </span>Klaus Darilion <klaus.darilion@nic.at><br><b>Sent:</b><span class="Apple-converted-space"> </span>Saturday, September 7, 2024 12:36 AM<br><b>To:</b><span class="Apple-converted-space"> </span>Klaus Darilion <klaus.darilion@nic.at>; Ondřej Surý <ondrej@isc.org><br><b>Cc:</b><span class="Apple-converted-space"> </span>Klaus Darilion via bind-users <bind-users@lists.isc.org><br><b>Subject:</b><span class="Apple-converted-space"> </span>RE: Sporadic Timeouts after upgrading to bind9.20<o:p></o:p></span></div></div></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Correcting myself: event with { reuseport no; }; and UV_THREADPOOL_SIZE=12 still timeouts happen, but the situation improved a lot.<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Regards<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Klaus<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="border-width: medium medium medium 1.5pt; border-style: none none none solid; border-color: currentcolor currentcolor currentcolor blue; border-image: none; padding: 0cm 0cm 0cm 4pt;"><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; border-image: none; padding: 3pt 0cm 0cm;"><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><b><span lang="DE">From:</span></b><span lang="DE"><span class="Apple-converted-space"> </span>bind-users <<a href="mailto:bind-users-bounces@lists.isc.org" style="color: rgb(5, 99, 193); text-decoration: underline;">bind-users-bounces@lists.isc.org</a>><span class="Apple-converted-space"> </span><b>On Behalf Of<span class="Apple-converted-space"> </span></b>Klaus Darilion via bind-users<br><b>Sent:</b><span class="Apple-converted-space"> </span>Saturday, September 7, 2024 12:21 AM<br><b>To:</b><span class="Apple-converted-space"> </span>Ondřej Surý <<a href="mailto:ondrej@isc.org" style="color: rgb(5, 99, 193); text-decoration: underline;">ondrej@isc.org</a>><br><b>Cc:</b><span class="Apple-converted-space"> </span>Klaus Darilion via bind-users <<a href="mailto:bind-users@lists.isc.org" style="color: rgb(5, 99, 193); text-decoration: underline;">bind-users@lists.isc.org</a>><br><b>Subject:</b><span class="Apple-converted-space"> </span>RE: Sporadic Timeouts after upgrading to bind9.20<o:p></o:p></span></div></div></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="border-width: medium medium medium 1.5pt; border-style: none none none solid; border-color: currentcolor currentcolor currentcolor blue; border-image: none; padding: 0cm 0cm 0cm 4pt;"><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; border-image: none; padding: 3pt 0cm 0cm;"><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><b><span lang="DE">From:</span></b><span lang="DE"><span class="Apple-converted-space"> </span>Ondřej Surý <<a href="mailto:ondrej@isc.org" style="color: rgb(5, 99, 193); text-decoration: underline;">ondrej@isc.org</a>><br><b>Sent:</b><span class="Apple-converted-space"> </span>Friday, September 6, 2024 4:08 PM<br><b>To:</b><span class="Apple-converted-space"> </span>Klaus Darilion <<a href="mailto:klaus.darilion@nic.at" style="color: rgb(5, 99, 193); text-decoration: underline;">klaus.darilion@nic.at</a>><br><b>Cc:</b><span class="Apple-converted-space"> </span>Petr Špaček <<a href="mailto:pspacek@isc.org" style="color: rgb(5, 99, 193); text-decoration: underline;">pspacek@isc.org</a>>;<span class="Apple-converted-space"> </span><a href="mailto:bind-users@lists.isc.org" style="color: rgb(5, 99, 193); text-decoration: underline;">bind-users@lists.isc.org</a>; Klaus Darilion via bind-users <<a href="mailto:bind-users@lists.isc.org" style="color: rgb(5, 99, 193); text-decoration: underline;">bind-users@lists.isc.org</a>><br><b>Subject:</b><span class="Apple-converted-space"> </span>Re: Sporadic Timeouts after upgrading to bind9.20<o:p></o:p></span></div></div></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Are your running with options { reuseport no; }; ?<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">You might want to try that.<o:p></o:p></div></div></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">After setting reuseport no; (and UV_THREADPOOL_SIZE=12) I have not seen any timeouts anymore.<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Anyway, this:<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><span lang="DE">TID 8917:</span><o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><span lang="DE">#0 0x00007b385aa6daa9 cds_lfht_destroy - /usr/lib/x86_64-linux-gnu/liburcu-cds.so.8.1.0</span><o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div><div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">caught my eye. Are the zones you are hosting particularly large on GLUE?<o:p></o:p></div></div></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">I don’T know and I have not checked yet. One of the affected zones is .ch. You could download the zone from<span style="font-size: 9pt; font-family: Helvetica, sans-serif;"><a href="https://zonedata.switch.ch/" target="_blank" title="https://zonedata.switch.ch/" style="color: rgb(5, 99, 193); text-decoration: underline;">https://zonedata.switch.ch/</a><span class="Apple-converted-space"> </span>And they are using NSEC (not NSEC3 as I have written before)</span><o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Also if you have more eu-stack, can you confirm this is the pattern now?<o:p></o:p></div></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">After setting reuseport no; I do not have stack-traces any more. But if that would help you I can undo the workaround next week to collect traces.<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Thanks<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Klaus<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div></div></div><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;">--<span class="Apple-converted-space"> </span></span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;"><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;">Visit<span class="Apple-converted-space"> </span></span><a href="https://lists.isc.org/mailman/listinfo/bind-users" style="color: rgb(5, 99, 193); text-decoration: underline; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">https://lists.isc.org/mailman/listinfo/bind-users</a><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;"><span class="Apple-converted-space"> </span>to unsubscribe from this list</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;"><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;"><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;">ISC funds the development of this software with paid support subscriptions. 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