<div dir="ltr">Looking at [1] you can look for the relevant thread and<div>gdb into it to see what's it about<br><div><br></div><div><br></div><div>[1] <a href="https://stackoverflow.com/questions/23838498/how-to-diagnose-a-python-process-chewing-cpu-in-linux">https://stackoverflow.com/questions/23838498/how-to-diagnose-a-python-process-chewing-cpu-in-linux</a></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 28 July 2017 at 11:19, Yaniv Kaul <span dir="ltr"><<a href="mailto:ykaul@redhat.com" target="_blank">ykaul@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">When running o-s-t, and specifically when running add_secondary_storag, lago command is taking 100% CPU. I'm not sure where and why, and trying to narrow down the relevant threads did not yield a lot - it's not the Glance related functions, for example.<div><br></div><div>I did try to make some changes to testlib.py, in an effort to reduce what I thought was a tight loop, but it made no effect (nevertheless, I think those are good changes):</div><div><div>[ykaul@ykaul lago-ost-plugin]$ diff -u ovirtlago/testlib.py /usr/lib/python2.7/site-<wbr>packages/ovirtlago/testlib.py</div><div>--- ovirtlago/testlib.py<span style="white-space:pre-wrap"> </span>2017-07-28 11:15:31.506848944 +0300</div><div>+++ /usr/lib/python2.7/site-<wbr>packages/ovirtlago/testlib.py<span style="white-space:pre-wrap"> </span>2017-07-28 09:29:19.403446285 +0300</div><div>@@ -209,7 +209,7 @@</div><div> return any(True for cls in cls_list if isinstance(obj, cls))</div><div> </div><div> </div><div>-def assert_equals_within(func, value, timeout, allowed_exceptions=None):</div><div>+def assert_equals_within(func, value, timeout, allowed_exceptions=None, initial_wait=15):</div><div> allowed_exceptions = allowed_exceptions or []</div><div> with utils.EggTimer(timeout) as timer:</div><div> while not timer.elapsed():</div><div>@@ -219,12 +219,17 @@</div><div> return</div><div> except Exception as exc:</div><div> if _instance_of_any(exc, allowed_exceptions):</div><div>+ time.sleep(3)</div><div> continue</div><div> </div><div> LOGGER.exception("Unhandled exception in %s", func)</div><div> raise</div><div> </div><div>- time.sleep(3)</div><div>+ if initial_wait == 0:</div><div>+ time.sleep(3)</div><div>+ else:</div><div>+ time.sleep(initial_wait)</div><div>+ initial_wait = 0</div><div> try:</div><div> raise AssertionError(</div><div> '%s != %s after %s seconds' % (res, value, timeout)</div></div><div><br></div><div><br></div><div><br></div><div>Any ideas how to debug this? I'm on F26, with latest Lago.</div><span class="HOEnZb"><font color="#888888"><div>Y.</div><div><br></div></font></span></div>
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