questions about crypto_scheduler

questions about crypto_scheduler

[Zhangfei Gao]

Hi, Akhil

Excuse me for the question.

I am testing UADK crypto performance with dpdk-test-crypto-perf, and 
want to use multi-thread or multi-session for better performance, so 
trying to use crypto_scheduler.

CMD like
sudo dpdk-test-crypto-perf -l 1,2 --vdev "crypto_uadk0" --vdev 
"crypto_uadk1" --vdev 
"crypto_scheduler,worker=crypto_uadk0,worker=crypto_uadk1,mode=round-robin" 
-- --devtype crypto_scheduler --optype cipher-only --buffer-sz 8192

Though multi-worker is set but found it is just using one worker.
Since uadk_cryptodev_probe gets the same dev->driver_id = 
uadk_cryptodev_driver_id in multi-probe.

Then scheduler_pmd_sym_session_configure will treat only one worker,
and call rte_cryptodev_sym_session_create only once.
if (configured_sess[j].driver_id == worker->driver_id)
         break

Do I misuse the crypto_scheduler for the multi-thread or multi-session.

Thanks in advance.

Re: questions about crypto_scheduler

[Zhang, Fan]

Hi Zhangfei,

The crypto scheduler PMD's session contains "sub-sessions" for all 
works, 1 sub-session per driver ID, to minimize the memory footprint. 
When configuring session, it configures the sub-sessions one by one. 
Since your UADK devices sharing the same driver ID, the crypto scheduler 
will only create one session for them to share.

Hope this answers your question.

Regards,

Fan

On 12/16/2022 6:54 AM, Zhangfei Gao wrote:
> Hi, Akhil
>
> Excuse me for the question.
>
> I am testing UADK crypto performance with dpdk-test-crypto-perf, and 
> want to use multi-thread or multi-session for better performance, so 
> trying to use crypto_scheduler.
>
> CMD like
> sudo dpdk-test-crypto-perf -l 1,2 --vdev "crypto_uadk0" --vdev 
> "crypto_uadk1" --vdev 
> "crypto_scheduler,worker=crypto_uadk0,worker=crypto_uadk1,mode=round-robin" 
> -- --devtype crypto_scheduler --optype cipher-only --buffer-sz 8192
>
> Though multi-worker is set but found it is just using one worker.
> Since uadk_cryptodev_probe gets the same dev->driver_id = 
> uadk_cryptodev_driver_id in multi-probe.
>
> Then scheduler_pmd_sym_session_configure will treat only one worker,
> and call rte_cryptodev_sym_session_create only once.
> if (configured_sess[j].driver_id == worker->driver_id)
>         break
>
> Do I misuse the crypto_scheduler for the multi-thread or multi-session.
>
> Thanks in advance.
>

RE: [EXT] questions about crypto_scheduler

[Akhil Goyal]

> Hi, Akhil
> 
> Excuse me for the question.
> 
> I am testing UADK crypto performance with dpdk-test-crypto-perf, and
> want to use multi-thread or multi-session for better performance, so
> trying to use crypto_scheduler.
> 
> CMD like
> sudo dpdk-test-crypto-perf -l 1,2 --vdev "crypto_uadk0" --vdev
> "crypto_uadk1" --vdev
> "crypto_scheduler,worker=crypto_uadk0,worker=crypto_uadk1,mode=round-
> robin"
> -- --devtype crypto_scheduler --optype cipher-only --buffer-sz 8192
> 
> Though multi-worker is set but found it is just using one worker.
> Since uadk_cryptodev_probe gets the same dev->driver_id =
> uadk_cryptodev_driver_id in multi-probe.
> 
> Then scheduler_pmd_sym_session_configure will treat only one worker,
> and call rte_cryptodev_sym_session_create only once.
> if (configured_sess[j].driver_id == worker->driver_id)
>          break
> 
> Do I misuse the crypto_scheduler for the multi-thread or multi-session.


++ scheduler maintainers

Re: questions about crypto_scheduler

[Zhang, Fan]

Hi Zhangfei,

The crypto scheduler PMD's session contains "sub-sessions" for all 
works, 1 sub-session per driver ID, to minimize the memory footprint. 
When configuring session, it configures the sub-sessions one by one. 
Since your UADK devices sharing the same driver ID, the crypto scheduler 
will only create one session for them to share.

Hope this answers your question.

Regards,

Fan

On 12/16/2022 6:54 AM, Zhangfei Gao wrote:
> Hi, Akhil
>
> Excuse me for the question.
>
> I am testing UADK crypto performance with dpdk-test-crypto-perf, and 
> want to use multi-thread or multi-session for better performance, so 
> trying to use crypto_scheduler.
>
> CMD like
> sudo dpdk-test-crypto-perf -l 1,2 --vdev "crypto_uadk0" --vdev 
> "crypto_uadk1" --vdev 
> "crypto_scheduler,worker=crypto_uadk0,worker=crypto_uadk1,mode=round-robin" 
> -- --devtype crypto_scheduler --optype cipher-only --buffer-sz 8192
>
> Though multi-worker is set but found it is just using one worker.
> Since uadk_cryptodev_probe gets the same dev->driver_id = 
> uadk_cryptodev_driver_id in multi-probe.
>
> Then scheduler_pmd_sym_session_configure will treat only one worker,
> and call rte_cryptodev_sym_session_create only once.
> if (configured_sess[j].driver_id == worker->driver_id)
>         break
>
> Do I misuse the crypto_scheduler for the multi-thread or multi-session.
>
> Thanks in advance.
>