[Libreoffice] Trying to diagnose base running extremely slowly

[Andrew Haley]

On 10/19/2011 05:57 PM, Michael Meeks wrote:
> 
> On Wed, 2011-10-19 at 17:32 +0200, Stephan Bergmann wrote:
>> What the LibO hsqldb code does a lot is call JNI's 
>> Attach/DetachCurrentThread.  Googling around, 
>> <http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6929067> "Stack 
>> guard pages should be removed when thread is detached" suggests that 
>> reading /proc/self/maps might have been added into 
>> Attach/DetachCurrentThread as part of a bug fix.  That would explain things.
> 
> 	Good catch ! The irony ... :-) this Java bug was kindly fixed for us
> indirectly via Andrew Haley to address the bad stack page left around when
> we had run some java. That page was causing crashes in calc formula computation
> in large sheets.
> 
> 	It seems we can't win at some stage here. Andrew - I wonder are other
> people getting frustrated by performance here too ? it seems there is
> some huge /proc/self/maps thrash as we enter/exit Java now on Linux.

Hmmm, I thought this had been fixed.

See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6978641

Andrew.