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<body><span class="vcard"><a class="email" href="mailto:david.weinehall@intel.com" title="David Weinehall <david.weinehall@intel.com>"> <span class="fn">David Weinehall</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - i915_init takes over 100 ms"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105622">bug 105622</a>
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<td>david.weinehall@intel.com
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - i915_init takes over 100 ms"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105622#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - i915_init takes over 100 ms"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105622">bug 105622</a>
from <span class="vcard"><a class="email" href="mailto:david.weinehall@intel.com" title="David Weinehall <david.weinehall@intel.com>"> <span class="fn">David Weinehall</span></a>
</span></b>
<pre>From past experience I'd say that initcall_debug alone isn't a very useful
means to measure this. There's a tool called pm-graph that's great for things
like this.
<a href="https://github.com/01org/pm-graph">https://github.com/01org/pm-graph</a>
With that (in ftrace mode) I'm seeing roughly 35ms on the Broadwell I tested
on. I can test on KBL too, if you believe it'll make a difference (the BDW was
simply closest at hand).</pre>
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