[Xapian-discuss] Search performance issues and profiling/debugging search?

[Ron Kass]

Ok.. Good (sort of) news.. We managed to get the seg fault again..

This time we will keep the DB and this time we got a gdb of such a run.


http://www.pidgintech.com/other/fts/test/gdb_segfault_backtrace_full.txt


(Note: this run is from a more complex test script we have, but the 
error still comes from the same action - getting the mset. We will try 
soon to recreate it with the simpler test script)


Olly? your thoughts?

We'd be happy to help find the cause and fix.

Let us know what to do.


Regards,

Ron



Olly Betts wrote:

>> Anyway, we have actually used xapian-compress on the databases to see if 
>> it helps. It appears to have rid of the segmentation fault error on 
>> database 10, but the slowness and the variations in estimates still exist.
>>     
>
> A seg fault is clearly a bug somewhere, and I'd really like to know
> where.  Do you still have the un-compacted database, or if not can you
> recreate it?  If so, please rerun the test on it under gdb as I
> requested in my previous mail!
>
> Cheers,
>     Olly
>