<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="Generator" content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hello,</p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Didn't see a way to get into the thread after joining the list, but hopefully this still replies correctly.</p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">First of all thank you for the prompt response and updated patch.<br>We implemented the updated async open patch, and started testing it in our lab.<br>The static module part of the patch isn't updated yet, so we didn't apply it.<br>While we're almost not using the static module, we'd still gladly test it and share a feedback, once the patch is updated.</p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The patch itself is looking good. We've not encountered any errors or issues, and we see a significant performance improvement.<br>We're working with spinning disks (HDD), and before applying the patch we would sometimes see the main thread get stuck on open IO anywhere between 2-15 seconds.<br>After applying the patch, we see that an iteration of the worker's main loop doesn't take more than 10ms! Significantly reducing the penalty for other transactions.</p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">We will keep monitoring the changes and report. We would really like to see this patch integrated into the official branch. If we can do anything else to help make this happen - please let us know.</p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Best,</p><p class="MsoNormal"> </p><p class="MsoNormal"><b>Noam Cvikel</b><br><span style="color:black">Qwilt | | <a href="mailto:noamc@qwilt.com" target="_blank"><span style="color:blue">noamc@qwilt.com</span></a></span></p><p class="MsoNormal"> </p></div></body></html>