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<a class="moz-txt-link-freetext" href="http://cr.openjdk.java.net/~stefank/8013132/webrev.00/">http://cr.openjdk.java.net/~stefank/8013132/webrev.00/</a><br>
<br>
This RFE adds a new flag named VerifySilently, which can be used to
turn off the verbose output that the verification code produces. The
proposed name has been chosen to match other Verify flags.<br>
<br>
From the Bug description:<br>
---<br>
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The HotSpot verification code is rather verbose and intrusive. I
propose that we add a flag that can be used to turn this output off.
<br>
<br>
An example of the verification output:
<br>
<tt>$ java -XX:+PrintGC -XX:+UnlockDiagnosticVMOptions
-XX:+VerifyBeforeExit -XX:+VerifyAfterGC -XX:+VerifyBeforeGC
-XX:+UseConcMarkSweepGC -XX:+ExplicitGCInvokesConcurrent -cp
/localhome/tests/ HelloSystemGC
</tt><tt><br>
</tt><tt>
VerifyBeforeGC:[Verifying threads heap concurrent mark-sweep
generation par new generation remset syms strs zone dict cldg
metaspace chunks hand C-heap code cache ]
</tt><tt><br>
</tt><tt>
[GC (System.gc()) 672K->260K(121600K), 0.0060920 secs]
</tt><tt><br>
</tt><tt>
VerifyAfterGC:[Verifying threads heap concurrent mark-sweep
generation par new generation remset syms strs zone dict cldg
metaspace chunks hand C-heap code cache ]
</tt><tt><br>
</tt><tt>
[Verifying threads heap concurrent mark-sweep generation par new
generation remset syms strs zone dict cldg metaspace chunks hand
C-heap code cache ]
</tt><tt><br>
</tt><tt>
[GC (CMS Initial Mark) 260K(121600K), 0.0204040 secs]
</tt><tt><br>
</tt><tt>
[Verifying threads heap concurrent mark-sweep generation par new
generation remset syms strs zone dict cldg metaspace chunks hand
C-heap code cache ]
</tt><tt><br>
</tt><tt>
[Verifying threads heap concurrent mark-sweep generation par new
generation remset syms strs zone dict cldg metaspace chunks hand
C-heap code cache ]
</tt><tt><br>
</tt><tt>
[GC (CMS Final Remark) [Verifying CMS Marking... done]
1604K(121600K), 0.1008210 secs]
</tt><tt><br>
</tt><tt>
[Verifying threads heap concurrent mark-sweep generation par new
generation remset syms strs zone dict cldg metaspace chunks hand
C-heap code cache ]
</tt><br>
<br>
And with the proposed flag turned on:
<br>
<tt>[GC (System.gc()) 672K->269K(121600K), 0.0050710 secs]
</tt><tt><br>
</tt><tt>
[GC (CMS Initial Mark) 269K(121600K), 0.0203380 secs]
</tt><tt><br>
</tt><tt>
[GC (CMS Final Remark) 1613K(121600K), 0.1007210 secs]
</tt><br>
---<br>
<br>
thanks,<br>
StefanK<br>
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