Hello,

$ lsusb
Bus 002 Device 031: ID 046a:002d Cherry GmbH SmartTerminal XX44
Bus 002 Device 003: ID 0a5c:5801 Broadcom Corp. BCM5880 Secure Applications....

$ lsusb -v | grep bMaxCCIDBusySlots
        bMaxCCIDBusySlots        1
        bMaxCCIDBusySlots        1

Look like the readers are not the problem, anyway I'm testing it with pcsc-tools

About the possible Java limitation, I'll take a look, the code of Frank maybe 
can help

Regards,

Murilo

________________________________________
De: Muscle [[email protected]] em nome de Ludovic Rousseau 
[[email protected]]
Enviado: quarta-feira, 3 de julho de 2013 16:45
Para: MUSCLE
Assunto: Re: [Muscle] RES: Parallel Process with readers - pcsc-lite

2013/7/3 MURILO COSTA <[email protected]>:
> I thought that maybe can be a Java problem, do you know some software to do 
> this kind of test (parallelism) ? I'll check if pcsc-tools can do that...

I guess it is a javax.smartcardio "limitation".

You need to create one context per reader using SCardEstablishContext.
I bet the Java wrapper creates only one context for all the readers.
In pcsc-lite the context is associated to a mutex. So all your
commands will block on the same mutex even if they use different
readers.
I don't know if is it easy or even possible to avoid this Java wrapper
"feature".

> Do you think that issue have some relationship with this Ludovic post:
> http://ludovicrousseau.blogspot.com.br/2013/06/ccid-descriptor-statistics_7148.html

No.

Bye

--
 Dr. Ludovic Rousseau

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