There is bug in build. jdbc:h2:nio is openning MappedByteBuffer
instead of file channel. And on windows XP it is failing with
exception:
Caused by: java.lang.IllegalStateException: Can't overwrite cause
at java.lang.Throwable.initCause(Throwable.java:320)
at
org.h2.store.fs.FileSystemDiskNio.openFileObject(FileSystemDiskNio.java:73)
at org.h2.store.FileStore.<init>(FileStore.java:84)
at org.h2.store.FileStore.open(FileStore.java:135)
at org.h2.store.FileStore.open(FileStore.java:117)
at org.h2.engine.Database.openFile(Database.java:435)
at org.h2.store.DiskFile.<init>(DiskFile.java:139)
at org.h2.engine.Database.openFileIndex(Database.java:465)
at org.h2.engine.Database.open(Database.java:540)
at org.h2.engine.Database.openDatabase(Database.java:223)
... 118 more
Jan
On Sat, Mar 14, 2009 at 7:43 PM, Jan Kotek <[email protected]> wrote:
> Hi Thomas,
> Wow, that was quick release :-)
> I am working on new patch for Soft and Weak reference cache.
>
> Jan
>
> Thanks for credit.
>
> On Thu, Mar 12, 2009 at 9:23 PM, Thomas Mueller
> <[email protected]> wrote:
>>
>> Hi,
>>
>>>> I run your complete benchmarks and can confirm that both NIO
>>>> implementations are slower. Maybe on other OS (I have winXP) it will
>>>> be faster.
>>>
>>> I think you misread the benchmarks? Or perhaps I do :-) But Thomas wrote:
>>>
>>>> > Statements per second: 68628 (regular)
>>>> > Statements per second: 76598 (NIO mapped, with mapped.load())
>>>> > Statements per second: 83756 (NIO mapped, without mapped.load())
>>>> > Statements per second: 83031 (NIO channel)
>>
>> This was on Mac OS, so NIO is faster on a Mac. On Windows XP, I get
>> different results: Regular is about 54000, NIO is about 50000. So on
>> Windows, NIO is slower. On Windows XP, I couldn't even test NIO
>> mapped, because it runs out of memory.
>>
>> Regards,
>> Thomas
>>
>> >>
>>
>
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