Re: tcmalloc issue

[James Page <james.page@ubuntu.com>]

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Thanks Chaitanya

I've tested and uploaded the patched version to trusty-proposed - the
SRU team should accept that into testing in the next day or so - they
will update the bug when that happens.

On 09/04/15 10:00, Chaitanya Huilgol wrote:
> Hi James,
> 
> Please find source of the test program to verify this bug at
> http://pastebin.com/KAxQZARm compile it with  -ltcmalloc To test: 
> Export a non-default value of the cache size, for eg # export
> TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES=67108864 Run the test prog,
> For the buggy version you will see
> 
> Tcmalloc BUG! TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES: 67108864
> Internal Size: 33554432 different
> 
> With the bug fixed, you should see
> 
> "Tcmalloc Internal and Env cache size are same:67108864"
> 
> Hope this helps.
> 
> Regards, Chaitanya
> 
> -----Original Message----- From: ceph-devel-owner@vger.kernel.org
> [mailto:ceph-devel-owner@vger.kernel.org] On Behalf Of James Page 
> Sent: Thursday, April 09, 2015 11:29 AM To: Somnath Roy; Sage Weil;
> ceph-maintainers@ceph.com Cc: ceph-devel@vger.kernel.org Subject:
> Re: tcmalloc issue
> 
> On 01/04/15 18:54, Somnath Roy wrote:
>> the tcmalloc bug is reported in the following link.
> 
>> http://code.google.com/p/gperftools/issues/detail?id=585
> 
>> So, do you want us to give the steps on how we are hitting the 
>> following trace or to reproduce the bug reported in the above
>> link ?
> 
>> If you are asking about hitting the stack trace I mentioned
>> below, it is just running ceph with lot of IOs for longer period
>> of time.
> 
> A minimal test case on how to reproduce the bug is sufficient; we
> can of course complete the second activity as well as soon as we
> have the update available.
> 
> Cheers
> 
> James
> 
> 
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- -- 
James Page
Ubuntu and Debian Developer
james.page@ubuntu.com
jamespage@debian.org
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