Re: High CPU load with pcscd and Kerkey security Module

On Mon, Nov 21, 2016 at 1:08 PM, Ludovic Rousseau
<[email protected]> wrote:
> 2016-11-21 11:47 GMT+01:00 Oliver Graute <[email protected]>:
>> Many thanks for your analysis and your comment.
>> My pcscd-spy debugging leads to similar results
>>
>> Results sorted by total execution time
>> total time: 597.958052 sec
>> 42.015016 sec (308 calls)  7.03% SCardTransmit
>> 9.974089 sec (1687 calls)  1.67% SCardStatus
>
> I guess this list is trunated, right?
> Can you share the complete results?

Results sorted by total execution time
total time: 597.958052 sec
1.260111 sec ( 14 calls)  0.21% SCardTransmit
0.437992 sec ( 37 calls)  0.07% SCardStatus
0.058914 sec (  3 calls)  0.01% SCardEndTransaction
0.031738 sec (  4 calls)  0.01% SCardGetStatusChange
0.016146 sec (  1 calls)  0.00% SCardEstablishContext
0.015728 sec (  2 calls)  0.00% SCardConnect
0.008783 sec (  3 calls)  0.00% SCardBeginTransaction
0.004295 sec (  3 calls)  0.00% SCardListReaders
0.000688 sec (  1 calls)  0.00% SCardDisconnect

Results sorted by total execution time
total time: 597.958052 sec
42.015016 sec (308 calls)  7.03% SCardTransmit
9.974089 sec (1687 calls)  1.67% SCardStatus
3.144835 sec (278 calls)  0.53% SCardEndTransaction
2.814056 sec (123 calls)  0.47% SCardGetStatusChange
1.173591 sec (278 calls)  0.20% SCardBeginTransaction
0.226849 sec (  4 calls)  0.04% SCardConnect
0.047858 sec (  2 calls)  0.01% SCardEstablishContext
0.032616 sec (  6 calls)  0.01% SCardListReaders
0.019015 sec (  4 calls)  0.00% SCardDisconnect
0.004632 sec (  2 calls)  0.00% SCardReleaseContext

I don't now why I got two results sets here.

>>> Are you the author of the PC/SC application running on your board?
>>
>> No, we are using a custom libpkk11 PKCS11# Host middleware on
>> top of pcscd, unfortunately this lib is closed source for me. So I need to
>> contact the Libkkp11 team  (ST Microsystem) to investigate this further.
>
> Good luck with proprietary software :-)