Following [1], testpmd memory consumption has skyrocketted.
The rte_port structure has gotten quite fat.
struct rte_port {
[...]
struct rte_eth_rxconf rx_conf[65536]; /* 266280 3145728 */
/* --- cacheline 53312 boundary (3411968 bytes) was 40 bytes ago --- */
struct rte_eth_txconf tx_conf[65536]; /* 3412008 3670016 */
/* --- cacheline 110656 boundary (7081984 bytes) was 40 bytes ago --- */
[...]
/* size: 8654936, cachelines: 135234, members: 31 */
[...]
testpmd handles RTE_MAX_ETHPORTS ports (32 by default) which means that it
needs ~256MB just for this internal representation.
The reason is that a testpmd rte_port (the name is quite confusing, as
it is a local type) maintains configurations for all queues of a port.
But where you would expect testpmd to use RTE_MAX_QUEUES_PER_PORT as the
maximum queue count, the rte_port uses MAX_QUEUE_ID set to 64k.
Prefer the ethdev maximum value.
After this patch:
struct rte_port {
[...]
struct rte_eth_rxconf rx_conf[1025]; /* 8240 49200 */
/* --- cacheline 897 boundary (57408 bytes) was 32 bytes ago --- */
struct rte_eth_txconf tx_conf[1025]; /* 57440 57400 */
/* --- cacheline 1794 boundary (114816 bytes) was 24 bytes ago --- */
[...]
/* size: 139488, cachelines: 2180, members: 31 */
[...]
With this, we can ask for less memory in test-null.sh.
[1]: https://git.dpdk.org/dpdk/commit/?id=436b3a6b6e62
Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
9e6b36c34c