From: Robert Sanford <rsanford2@gmail.com>
To: dev@dpdk.org
Cc: declan.doherty@intel.com, pablo.de.lara.guarch@intel.com,
olivier.matz@6wind.com
Subject: [dpdk-dev] [PATCH 3/4] net/bonding: another fix to LACP mempool size
Date: Mon, 1 Aug 2016 16:42:55 -0400 [thread overview]
Message-ID: <1470084176-79932-4-git-send-email-rsanford@akamai.com> (raw)
In-Reply-To: <1470084176-79932-1-git-send-email-rsanford@akamai.com>
The following log message may appear after a slave is idle (or nearly
idle) for a few minutes: "PMD: Failed to allocate LACP packet from
pool".
Problem: All mbufs from a slave's private pool (used exclusively for
transmitting LACPDUs) have been allocated and are still sitting in
the device's tx descriptor ring and other cores' mempool caches.
Solution: Ensure that each slaves' tx (LACPDU) mempool owns more than
n-tx-queues * (n-tx-descriptors + per-core-mempool-flush-threshold)
mbufs.
Note that the LACP tx machine function is the only code that allocates
from a slave's private pool. It runs in the context of the interrupt
thread, and thus it has no mempool cache of its own.
Signed-off-by: Robert Sanford <rsanford@akamai.com>
---
drivers/net/bonding/rte_eth_bond_8023ad.c | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/net/bonding/rte_eth_bond_8023ad.c b/drivers/net/bonding/rte_eth_bond_8023ad.c
index 2f7ae70..1207896 100644
--- a/drivers/net/bonding/rte_eth_bond_8023ad.c
+++ b/drivers/net/bonding/rte_eth_bond_8023ad.c
@@ -854,6 +854,8 @@ bond_mode_8023ad_activate_slave(struct rte_eth_dev *bond_dev, uint8_t slave_id)
char mem_name[RTE_ETH_NAME_MAX_LEN];
int socket_id;
unsigned element_size;
+ unsigned cache_size;
+ unsigned cache_flushthresh;
uint32_t total_tx_desc;
struct bond_tx_queue *bd_tx_q;
uint16_t q_id;
@@ -890,19 +892,21 @@ bond_mode_8023ad_activate_slave(struct rte_eth_dev *bond_dev, uint8_t slave_id)
element_size = sizeof(struct slow_protocol_frame) + sizeof(struct rte_mbuf)
+ RTE_PKTMBUF_HEADROOM;
+ cache_size = RTE_MEMPOOL_CACHE_MAX_SIZE >= 32 ?
+ 32 : RTE_MEMPOOL_CACHE_MAX_SIZE;
+ cache_flushthresh = RTE_MEMPOOL_CALC_CACHE_FLUSHTHRESH(cache_size);
/* The size of the mempool should be at least:
* the sum of the TX descriptors + BOND_MODE_8023AX_SLAVE_TX_PKTS */
total_tx_desc = BOND_MODE_8023AX_SLAVE_TX_PKTS;
for (q_id = 0; q_id < bond_dev->data->nb_tx_queues; q_id++) {
bd_tx_q = (struct bond_tx_queue*)bond_dev->data->tx_queues[q_id];
- total_tx_desc += bd_tx_q->nb_tx_desc;
+ total_tx_desc += bd_tx_q->nb_tx_desc + cache_flushthresh;
}
snprintf(mem_name, RTE_DIM(mem_name), "slave_port%u_pool", slave_id);
port->mbuf_pool = rte_mempool_create(mem_name,
- total_tx_desc, element_size,
- RTE_MEMPOOL_CACHE_MAX_SIZE >= 32 ? 32 : RTE_MEMPOOL_CACHE_MAX_SIZE,
+ total_tx_desc, element_size, cache_size,
sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init,
NULL, rte_pktmbuf_init, NULL, socket_id, MEMPOOL_F_NO_SPREAD);
--
1.7.1
next prev parent reply other threads:[~2016-08-01 20:45 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-01 20:42 [dpdk-dev] [PATCH 0/4] net/bonding: bonding and LACP fixes Robert Sanford
2016-08-01 20:42 ` [dpdk-dev] [PATCH 1/4] testpmd: fix LACP ports to work with idle links Robert Sanford
2017-06-22 1:25 ` Wu, Jingjing
2017-10-31 1:07 ` Ferruh Yigit
2017-11-01 20:06 ` Ferruh Yigit
2016-08-01 20:42 ` [dpdk-dev] [PATCH 2/4] mempool: make cache flush threshold macro public Robert Sanford
2016-08-23 15:09 ` Olivier MATZ
2016-08-23 16:07 ` Sanford, Robert
2016-08-24 16:15 ` Olivier MATZ
2016-08-01 20:42 ` Robert Sanford [this message]
2016-08-23 15:09 ` [dpdk-dev] [PATCH 3/4] net/bonding: another fix to LACP mempool size Olivier MATZ
2016-08-23 20:01 ` Sanford, Robert
2016-08-24 16:14 ` Olivier MATZ
2016-11-07 16:02 ` Kulasek, TomaszX
2016-08-01 20:42 ` [dpdk-dev] [PATCH 4/4] net/bonding: fix configuration of LACP slaves Robert Sanford
2016-11-07 16:03 ` Kulasek, TomaszX
2017-02-08 17:14 ` [dpdk-dev] [PATCH 0/4] net/bonding: bonding and LACP fixes Thomas Monjalon
2017-03-09 13:19 ` Thomas Monjalon
2017-03-09 16:57 ` Declan Doherty
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1470084176-79932-4-git-send-email-rsanford@akamai.com \
--to=rsanford2@gmail.com \
--cc=declan.doherty@intel.com \
--cc=dev@dpdk.org \
--cc=olivier.matz@6wind.com \
--cc=pablo.de.lara.guarch@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).