Hi, Can anyone please respond to this email ? Thank you in advance for your suggestion and time.
Regards, Chinmaya On Fri, May 5, 2017 at 6:20 PM, Chinmaya Dwibedy <[email protected]> wrote: > Hi All, > > > We are using DPK-17.02. We use crypto via hardware (QAT) and software > acceleration (AESNI). There is one to one mapping between crypto Dev and > worker core. What are the memory requirements for the below stated > > 1) Creation of one physical Crypto device. > > 2) Creation of one AESNI MB virtual Crypto device. > > Thereafter we configure a device with the default number of queue pairs to > set up for the device as shown below. > > > #define CDEV_MP_CACHE_SZ 64 > > rte_cryptodev_info_get(cdev_id, &info); > > dev_conf.nb_queue_pairs = info.max_nb_queue_pairs; > > dev_conf.session_mp.nb_objs = info.sym.max_nb_sessions; > > dev_conf.socket_id = SOCKET_ID_ANY; > > dev_conf.session_mp.cache_size = CDEV_MP_CACHE_SZ; > > rte_cryptodev_configure (cdev_id, &dev_conf); > > > How to calculate the minimum memory required to configure per HW and per > SW crypto device. Then we allocate and set up a receive queue pair for a > device as follows. As of now we use one queue per device and number of > descriptors per queue pair is set to 2k. If we increase the number of > descriptors, will it improve the performance in terms of throughput? > > > #define CDEV_MP_NB_OBJS 2048 > > qp_conf.nb_descriptors = CDEV_MP_NB_OBJS; > > rte_cryptodev_queue_pair_setup (cdev_id, 0, &qp_conf, dev_conf.socket_id) > > > We create a session for symmetric cryptographic operations per IPsec > Security association. What is the memory required to hold session data > structure? > > > The intent behind this is to calculate the memory requirements in advance > (before EAL initialization) and based upon the available memory, figure out > how many crypto devices (note: our application initializes AESNI vdev > without using EAL command line option) can be initialized? Say there are 24 > worker cores and we need 24 crypto AESNI vdevs. But there is no sufficient > hugepage memory for creating 24 crypto AESNI vdevs. In such case, we will > allocate more hugepages , then call rte_eal_init() and expect it to be > passed. > > > Thank you in advance for your suggestion and time. > > > > Regards, > > Chinmaya > > > > > > > > >
