<div dir="ltr">Hi all,<div><br></div><div>After experimenting with thin-lto caching behaviour I found an issue with pruning when on Windows. </div><div><br></div><div>

<p style="margin:0px 0px 12px;padding:0px;border:0px;color:rgb(0,0,0);font-family:"Segoe UI","Segoe UI Emoji","Segoe UI Symbol",Lato,"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Thin-lto cache file atimes are used for expiration based pruning, and since Vista, access file times are not updated by Windows by default:<br style="margin-top:0px"><a href="https://blogs.technet.microsoft.com/filecab/2006/11/07/disabling-last-access-time-in-windows-vista-to-improve-ntfs-performance/" class="m_6147863672427879768gmail-m_2002141619253296797gmail-remarkup-link" rel="noreferrer" style="text-decoration:none;color:rgb(19,108,178)" target="_blank">https://blogs.technet.microsof<wbr>t.com/filecab/2006/11/07/<wbr>disabling-last-access-time-in-<wbr>windows-vista-to-improve-ntfs-<wbr>performance/</a></p><p style="margin:0px;padding:0px;border:0px;color:rgb(0,0,0);font-family:"Segoe UI","Segoe UI Emoji","Segoe UI Symbol",Lato,"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">This means on Windows, cache files are currently being pruned from creation time. </p>

<br></div><div>I've made a patch for this so any feedback would be appreciated:</div><div><br></div><div>D47266</div><div><br></div><div>Thanks,</div><div><br></div><div>Owen</div></div>