<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><br><div><div>On Nov 14, 2013, at 9:07 AM, Rick Foos <<a href="mailto:rfoos@codeaurora.org">rfoos@codeaurora.org</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div bgcolor="white" lang="EN-US" link="blue" vlink="purple" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 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;"><div class="WordSection1" style="page: WordSection1;"><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Status: System in swap overnight. Stopped both buildmaster and slave. 187 llvm-symbolizer tasks were still running. Tasks did not stop after<o:p></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"> </span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">Retried this morning, no other workload, 8 llvm-symbolizer tasks consuming 100% on each cpu</span></div></div></div></blockquote><div><br></div><div>Doesn’t that mean that Asan found some problems, but is stuck trying to symbolicate the backtraces? Is there a way to run Asan and *not* symbolicate? </div><div><br></div><div>This also seems like a bug (infinite loop?) in llvm-symbolizer. </div><div><br></div><div>-Nick</div><div><br></div><br><blockquote type="cite"><div bgcolor="white" lang="EN-US" link="blue" vlink="purple" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 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;"><div class="WordSection1" style="page: WordSection1;"><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">. 7 zombie tasks.<o:p></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"> </span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">So not quite ready this morning. If anyone knows of an llvm-sanitizer issue like this it would help.<o:p></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);"> </span></div><div><div style="border-style: solid none none; border-top-color: rgb(181, 196, 223); border-top-width: 1pt; padding: 3pt 0in 0in;"><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; color: windowtext;">From:</span></b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; color: windowtext;"><span class="Apple-converted-space"> </span><a href="mailto:llvm-commits-bounces@cs.uiuc.edu" style="color: purple; text-decoration: underline;">llvm-commits-bounces@cs.uiuc.edu</a><span class="Apple-converted-space"> </span>[<a href="mailto:llvm-commits-bounces@cs.uiuc.edu" style="color: purple; text-decoration: underline;">mailto:llvm-commits-bounces@cs.uiuc.edu</a>]<span class="Apple-converted-space"> </span><b>On Behalf Of<span class="Apple-converted-space"> </span></b>Rick Foos<br><b>Sent:</b><span class="Apple-converted-space"> </span>Wednesday, November 13, 2013 1:42 PM<br><b>To:</b><span class="Apple-converted-space"> </span>Sergey Matveev; Shankar Easwaran<br><b>Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:llvm-commits@cs.uiuc.edu" style="color: purple; text-decoration: underline;">llvm-commits@cs.uiuc.edu</a>; Galina Kistanova<br><b>Subject:</b><span class="Apple-converted-space"> </span>Re: [lld] r194545 - [PECOFF] Fix use-after-return.<o:p></o:p></span></div></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p> </o:p></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;">Sorry for the delay,<span class="Apple-converted-space"> </span><br><br>Our problem with running the sanitizers is that the load average running under Ninja reached 146 and a short time after a system crash requiring calling someone to power cycle the box...<br><br>The address sanitizer by itself leaves a load average 40. This means the OS over 100% utilization, and is thrashing a bit. Load Average doesn't say what exactly is thrashing.<br><br>Ninja supports make's -j, and -l options. The -l maximum load average, is the key.<span class="Apple-converted-space"> </span><br><br>The load average should be less than the total number of cores (hyperthreads too) before Ninja launches another task.<span class="Apple-converted-space"> </span><br><br>A Load Average at or lower than 100% technically should benefit performance, and maximize throughput. However, I will be happy if I don't have to call someone to power cycle the server :)<br><br>So the maximum load average of a 16 core machine with hyperthreads is 32 (keeping it simple). This needs to be passed to all make's and Ninja build steps on that slave to maximize throughput.<br><br>For now, I'm looking at a minimal patch to include jobs and a new loadaverage variable for the sanitizers.<span class="Apple-converted-space"> </span><br><br>Longer term, all buildslaves should define maximum loadaverage, and all make/ninja steps should pass -j, and -l options.<br><br>Best Regards,<br>Rick<br><br>On 11/13/2013 11:21 AM, Sergey Matveev wrote:<o:p></o:p></div></div><blockquote style="margin-top: 5pt; margin-bottom: 5pt;"><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;">+kcc<o:p></o:p></div></div><div><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p> </o:p></p><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;">On Wed, Nov 13, 2013 at 6:41 AM, Shankar Easwaran <<a href="mailto:shankare@codeaurora.org" target="_blank" style="color: purple; text-decoration: underline;">shankare@codeaurora.org</a>> wrote:<o:p></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;">Sorry for another indirection. Rick foos is working on it. I think there is some good news here :)<br><br>Cced Rick + adding Galina,Dmitri.<br><br>Thanks<br><br>Shankar Easwaran<o:p></o:p></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><br><br>On 11/12/2013 8:37 PM, Rui Ueyama wrote:<o:p></o:p></div><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 12pt; font-family: 'Times New Roman', serif;">Shankar tried to set it up recently.<br><br><br>On Tue, Nov 12, 2013 at 6:31 PM, Sean Silva <<a href="mailto:silvas@purdue.edu" target="_blank" style="color: purple; text-decoration: underline;">silvas@purdue.edu</a>> wrote:<o:p></o:p></p><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 12pt; font-family: 'Times New Roman', serif;">Sanitizers?<br><br>There have been a couple of these sorts of bugs recently... we really<br>ought to have some sanitizer bots...<br><br>-- Sean Silva<br><br><br>On Tue, Nov 12, 2013 at 9:21 PM, Rui Ueyama <<a href="mailto:ruiu@google.com" target="_blank" style="color: purple; text-decoration: underline;">ruiu@google.com</a>> wrote:<o:p></o:p></p><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 12pt; font-family: 'Times New Roman', serif;">Author: ruiu<br>Date: Tue Nov 12 20:21:51 2013<br>New Revision: 194545<br><br>URL:<span class="Apple-converted-space"> </span><a href="http://llvm.org/viewvc/llvm-project?rev=194545&view=rev" target="_blank" style="color: purple; text-decoration: underline;">http://llvm.org/viewvc/llvm-project?rev=194545&view=rev</a><br>Log:<br>[PECOFF] Fix use-after-return.<br><br>Modified:<br> lld/trunk/lib/Driver/WinLinkDriver.cpp<br><br>Modified: lld/trunk/lib/Driver/WinLinkDriver.cpp<br>URL:<br><a href="http://llvm.org/viewvc/llvm-project/lld/trunk/lib/Driver/WinLinkDriver.cpp?rev=194545&r1=194544&r2=194545&view=diff" target="_blank" style="color: purple; text-decoration: underline;">http://llvm.org/viewvc/llvm-project/lld/trunk/lib/Driver/WinLinkDriver.cpp?rev=194545&r1=194544&r2=194545&view=diff</a><br><br>==============================================================================<br>--- lld/trunk/lib/Driver/WinLinkDriver.cpp (original)<br>+++ lld/trunk/lib/Driver/WinLinkDriver.cpp Tue Nov 12 20:21:51 2013<br>@@ -842,7 +842,7 @@ WinLinkDriver::parse(int argc, const cha<br><br> case OPT_INPUT:<br> inputElements.push_back(std::unique_ptr<InputElement>(<br>- new PECOFFFileNode(ctx, inputArg->getValue())));<br>+ new PECOFFFileNode(ctx,<br>ctx.allocateString(inputArg->getValue()))));<br> break;<br><br> #define DEFINE_BOOLEAN_FLAG(name, setter) \<br>@@ -892,9 +892,11 @@ WinLinkDriver::parse(int argc, const cha<br> // start with a hypen or a slash. This is not compatible with link.exe<br> // but useful for us to test lld on Unix.<br> if (llvm::opt::Arg *dashdash = parsedArgs->getLastArg(OPT_DASH_DASH)) {<br>- for (const StringRef value : dashdash->getValues())<br>- inputElements.push_back(<br>- std::unique_ptr<InputElement>(new PECOFFFileNode(ctx, value)));<br>+ for (const StringRef value : dashdash->getValues()) {<br>+ std::unique_ptr<InputElement> elem(<br>+ new PECOFFFileNode(ctx, ctx.allocateString(value)));<br>+ inputElements.push_back(std::move(elem));<br>+ }<br> }<br><br> // Add the libraries specified by /defaultlib unless they are already<br>added<br><br><br>_______________________________________________<br>llvm-commits mailing list<br><a href="mailto:llvm-commits@cs.uiuc.edu" target="_blank" style="color: purple; text-decoration: underline;">llvm-commits@cs.uiuc.edu</a><br><a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits" target="_blank" style="color: purple; text-decoration: underline;">http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits</a><o:p></o:p></p><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p> </o:p></div><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p> </o:p></p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span class="hoenzb"><span style="color: rgb(136, 136, 136);">--<span class="Apple-converted-space"> </span></span></span><span style="color: rgb(136, 136, 136);"><br><span class="hoenzb">Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation</span></span><o:p></o:p></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><br><br>_______________________________________________<br>llvm-commits mailing list<br><a href="mailto:llvm-commits@cs.uiuc.edu" target="_blank" style="color: purple; text-decoration: underline;">llvm-commits@cs.uiuc.edu</a><br><a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits" target="_blank" style="color: purple; text-decoration: underline;">http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits</a><o:p></o:p></div></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><o:p> </o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><br><br><br><o:p></o:p></div><pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';">_______________________________________________<o:p></o:p></pre><pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';">llvm-commits mailing list<o:p></o:p></pre><pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';"><a href="mailto:llvm-commits@cs.uiuc.edu" style="color: purple; text-decoration: underline;">llvm-commits@cs.uiuc.edu</a><o:p></o:p></pre><pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';"><a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits" style="color: purple; text-decoration: underline;">http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits</a><o:p></o:p></pre></blockquote><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><br><br><br><o:p></o:p></div><pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';">-- <o:p></o:p></pre><pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';">Rick Foos<o:p></o:p></pre><pre style="margin: 0in 0in 0.0001pt; font-size: 10pt; font-family: 'Courier New';">Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation<o:p></o:p></pre></div>_______________________________________________<br>llvm-commits mailing list<br><a href="mailto:llvm-commits@cs.uiuc.edu" style="color: purple; text-decoration: underline;">llvm-commits@cs.uiuc.edu</a><br><a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits" style="color: purple; text-decoration: underline;">http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits</a><br></div></blockquote></div><br></body></html>