Any time you use transactions and disable recovery is a time to step back and rethink what
you really need.
Mark.
On 3 Dec 2013, at 13:51, Mircea Markus wrote:
On Dec 3, 2013, at 1:26 PM, Mark Little <mlittle(a)redhat.com>
wrote:
> Why write a log if there is no recovery? That's wrong.
AFAIK the recovery is configured as a separate subsystem within the TM. If recovery can
be disabled entirely within TM, including TM's log writes, then indeed as Dan
suggested, XA resource enlisted would have the same performance as synchronization
enlistments. I don't find this setup very nice though :-)
>
> Mark.
>
>
> On 29 Nov 2013, at 14:39, Mircea Markus wrote:
>
>>
>> On Nov 21, 2013, at 3:18 PM, Dan Berindei <dan.berindei(a)gmail.com> wrote:
>>
>>> Hmm, couldn't you just disable recovery in the TM to get the same
performance with a XA resource as with a synchronization?
>>>
>>
>> I don't think that would be enough actually. Even without recovery, for
transactions (XA) that have more than one participant registered, the TM writes
information on the transaction log.
>> This is a persistent log and writing to it slows down things.
>>
>>
>>>
>>> On Thu, Nov 21, 2013 at 1:57 PM, Pedro Ruivo <pedro(a)infinispan.org>
wrote:
>>>
>>>
>>> On 11/21/2013 11:34 AM, Galder ZamarreƱo wrote:
>>>>
>>>>
>>>> It's way faster actually. The speed difference from all the extra
work required by Transaction Manager to deal with multiple XA resources, make transactions
recoverable..etc. We've done tests in the past (i.e. Hibernate 2LC) comparing both and
the difference was quite big.
>>>>
>>>
>>> you are right. I forgot the recovery mechanism :)
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>>
>> Cheers,
>> --
>> Mircea Markus
>> Infinispan lead (
www.infinispan.org)
>>
>>
>>
>>
>>
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>>
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>
> ---
> Mark Little
> mlittle(a)redhat.com
>
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Cheers,
--
Mircea Markus
Infinispan lead (
www.infinispan.org)
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---
Mark Little
mlittle(a)redhat.com
JBoss, by Red Hat
Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor,
Berkshire, SI4 1TE, United Kingdom.
Registered in UK and Wales under Company Registration No. 3798903 Directors: Michael
Cunningham (USA), Charlie Peters (USA), Matt Parsons (USA) and Brendan Lane (Ireland).