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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626">We have a FreeIPA 4.1.4 domain running on CentOS 7.1.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626">We have noticed that from certain machines, sudo is instant, and from others, it takes about 5 seconds.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626">All machines involved can resolve each other through DNS (both forward and reverse lookups).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626">Running an strace reveals that sssd_pam is hanging for 4.3 seconds waiting for /proc/freeipaproccessid/fd3 which maps to [eventpoll]<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626"><o:p> </o:p></span></p>
<p class="MsoPlainText">0.000044 epoll_wait(3, {{EPOLLIN, {u32=6976896, u64=6976896}}}, 1, 4896) = 1<o:p></o:p></p>
<p class="MsoPlainText">4.373816 read(9, "l\2\1\1\206\0\0\0\10\0\0\0\25\0\0\0\5\1u\0\10\0\0\0\10\1g\0\7ua("..., 2048) = 174<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626"><o:p> </o:p></span></p>
<p class="MsoNormal">lrwx------ 1 root root 64 Feb 3 19:04 3 -> [eventpoll]<span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626">There are no nfs mounts on this system, so I can’t see why this system call would take so long.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626">This is happening on 3 of our machines right now, but others can login just fine. The pam/authconfig setup is identical on all of them.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#262626">Any ideas why sssd would be timing out trying to get [eventpoll] out of the /proc directory?<o:p></o:p></span></p>
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