Re: [dpdk-dev] [PATCH 5/5] ixgbe: silence noisy log messages

[Bruce Richardson <bruce.richardson@intel.com>]

On Fri, May 15, 2015 at 10:08:27AM -0700, Stephen Hemminger wrote:
> The ixgbe driver likes to be far to chatty in the system log
> which is good for the original developer but not good for a production
> product. All the normal messages should be changed from INFO to DEBUG.
> 
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

For the most part, this looks fine. However, I'm unsure about changing the log
level of the messages stating what the RX and TX burst functions in use are. I
would view this as important information that should generally be displayed as
the performance impacts of using a sub-optimal RX/TX code path are large.

/Bruce

> ---
>  lib/librte_pmd_ixgbe/ixgbe_ethdev.c | 14 +++++++-------
>  lib/librte_pmd_ixgbe/ixgbe_rxtx.c   | 20 ++++++++++----------
>  2 files changed, 17 insertions(+), 17 deletions(-)
> 
> diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
> index 7e75382..bb24a17 100644
> --- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
> +++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
> @@ -568,7 +568,7 @@ ixgbe_dev_queue_stats_mapping_set(struct rte_eth_dev *eth_dev,
>  		(hw->mac.type != ixgbe_mac_X550EM_x))
>  		return -ENOSYS;
>  
> -	PMD_INIT_LOG(INFO, "Setting port %u, %s queue_id %d to stat index %d",
> +	PMD_INIT_LOG(DEBUG, "Setting port %u, %s queue_id %d to stat index %d",
>  		     eth_dev->data->port_id, is_rx ? "RX" : "TX",
>  		     queue_id, stat_idx);
>  
> @@ -594,20 +594,20 @@ ixgbe_dev_queue_stats_mapping_set(struct rte_eth_dev *eth_dev,
>  	else
>  		stat_mappings->rqsmr[n] |= qsmr_mask;
>  
> -	PMD_INIT_LOG(INFO, "Set port %u, %s queue_id %d to stat index %d",
> +	PMD_INIT_LOG(DEBUG, "Set port %u, %s queue_id %d to stat index %d",
>  		     eth_dev->data->port_id, is_rx ? "RX" : "TX",
>  		     queue_id, stat_idx);
> -	PMD_INIT_LOG(INFO, "%s[%d] = 0x%08x", is_rx ? "RQSMR" : "TQSM", n,
> +	PMD_INIT_LOG(DEBUG, "%s[%d] = 0x%08x", is_rx ? "RQSMR" : "TQSM", n,
>  		     is_rx ? stat_mappings->rqsmr[n] : stat_mappings->tqsm[n]);
>  
>  	/* Now write the mapping in the appropriate register */
>  	if (is_rx) {
> -		PMD_INIT_LOG(INFO, "Write 0x%x to RX IXGBE stat mapping reg:%d",
> +		PMD_INIT_LOG(DEBUG, "Write 0x%x to RX IXGBE stat mapping reg:%d",
>  			     stat_mappings->rqsmr[n], n);
>  		IXGBE_WRITE_REG(hw, IXGBE_RQSMR(n), stat_mappings->rqsmr[n]);
>  	}
>  	else {
> -		PMD_INIT_LOG(INFO, "Write 0x%x to TX IXGBE stat mapping reg:%d",
> +		PMD_INIT_LOG(DEBUG, "Write 0x%x to TX IXGBE stat mapping reg:%d",
>  			     stat_mappings->tqsm[n], n);
>  		IXGBE_WRITE_REG(hw, IXGBE_TQSM(n), stat_mappings->tqsm[n]);
>  	}
> @@ -751,7 +751,7 @@ eth_ixgbe_dev_init(struct rte_eth_dev *eth_dev)
>  			ixgbe_set_tx_function(eth_dev, txq);
>  		} else {
>  			/* Use default TX function if we get here */
> -			PMD_INIT_LOG(INFO, "No TX queues configured yet. "
> +			PMD_INIT_LOG(DEBUG, "No TX queues configured yet. "
>  			                   "Using default TX function.");
>  		}
>  
> @@ -2275,7 +2275,7 @@ ixgbe_dev_interrupt_get_status(struct rte_eth_dev *dev)
>  
>  	/* read-on-clear nic registers here */
>  	eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
> -	PMD_DRV_LOG(INFO, "eicr %x", eicr);
> +	PMD_DRV_LOG(DEBUG, "eicr %x", eicr);
>  
>  	intr->flags = 0;
>  	if (eicr & IXGBE_EICR_LSC) {
> diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
> index 57c9430..08830bf 100644
> --- a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
> +++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
> @@ -1871,23 +1871,23 @@ ixgbe_set_tx_function(struct rte_eth_dev *dev, struct ixgbe_tx_queue *txq)
>  	/* Use a simple Tx queue (no offloads, no multi segs) if possible */
>  	if (((txq->txq_flags & IXGBE_SIMPLE_FLAGS) == IXGBE_SIMPLE_FLAGS)
>  			&& (txq->tx_rs_thresh >= RTE_PMD_IXGBE_TX_MAX_BURST)) {
> -		PMD_INIT_LOG(INFO, "Using simple tx code path");
> +		PMD_INIT_LOG(DEBUG, "Using simple tx code path");
>  #ifdef RTE_IXGBE_INC_VECTOR
>  		if (txq->tx_rs_thresh <= RTE_IXGBE_TX_MAX_FREE_BUF_SZ &&
>  				(rte_eal_process_type() != RTE_PROC_PRIMARY ||
>  					ixgbe_txq_vec_setup(txq) == 0)) {
> -			PMD_INIT_LOG(INFO, "Vector tx enabled.");
> +			PMD_INIT_LOG(DEBUG, "Vector tx enabled.");
>  			dev->tx_pkt_burst = ixgbe_xmit_pkts_vec;
>  		} else
>  #endif
>  		dev->tx_pkt_burst = ixgbe_xmit_pkts_simple;
>  	} else {
> -		PMD_INIT_LOG(INFO, "Using full-featured tx code path");
> -		PMD_INIT_LOG(INFO,
> +		PMD_INIT_LOG(DEBUG, "Using full-featured tx code path");
> +		PMD_INIT_LOG(DEBUG,
>  				" - txq_flags = %lx " "[IXGBE_SIMPLE_FLAGS=%lx]",
>  				(unsigned long)txq->txq_flags,
>  				(unsigned long)IXGBE_SIMPLE_FLAGS);
> -		PMD_INIT_LOG(INFO,
> +		PMD_INIT_LOG(DEBUG,
>  				" - tx_rs_thresh = %lu " "[RTE_PMD_IXGBE_TX_MAX_BURST=%lu]",
>  				(unsigned long)txq->tx_rs_thresh,
>  				(unsigned long)RTE_PMD_IXGBE_TX_MAX_BURST);
> @@ -3761,11 +3761,11 @@ void ixgbe_set_rx_function(struct rte_eth_dev *dev)
>  	 */
>  	if (dev->data->lro) {
>  		if (adapter->rx_bulk_alloc_allowed) {
> -			PMD_INIT_LOG(INFO, "LRO is requested. Using a bulk "
> +			PMD_INIT_LOG(DEBUG, "LRO is requested. Using a bulk "
>  					   "allocation version");
>  			dev->rx_pkt_burst = ixgbe_recv_pkts_lro_bulk_alloc;
>  		} else {
> -			PMD_INIT_LOG(INFO, "LRO is requested. Using a single "
> +			PMD_INIT_LOG(DEBUG, "LRO is requested. Using a single "
>  					   "allocation version");
>  			dev->rx_pkt_burst = ixgbe_recv_pkts_lro_single_alloc;
>  		}
> @@ -3781,7 +3781,7 @@ void ixgbe_set_rx_function(struct rte_eth_dev *dev)
>  
>  			dev->rx_pkt_burst = ixgbe_recv_scattered_pkts_vec;
>  		} else if (adapter->rx_bulk_alloc_allowed) {
> -			PMD_INIT_LOG(INFO, "Using a Scattered with bulk "
> +			PMD_INIT_LOG(DEBUG, "Using a Scattered with bulk "
>  					   "allocation callback (port=%d).",
>  				     dev->data->port_id);
>  			dev->rx_pkt_burst = ixgbe_recv_pkts_lro_bulk_alloc;
> @@ -3803,7 +3803,7 @@ void ixgbe_set_rx_function(struct rte_eth_dev *dev)
>  	 *    - Single buffer allocation (the simplest one)
>  	 */
>  	} else if (adapter->rx_vec_allowed) {
> -		PMD_INIT_LOG(INFO, "Vector rx enabled, please make sure RX "
> +		PMD_INIT_LOG(DEBUG, "Vector rx enabled, please make sure RX "
>  				   "burst size no less than 32.");
>  
>  		dev->rx_pkt_burst = ixgbe_recv_pkts_vec;
> @@ -3961,7 +3961,7 @@ ixgbe_set_rsc(struct rte_eth_dev *dev)
>  
>  	dev->data->lro = 1;
>  
> -	PMD_INIT_LOG(INFO, "enabling LRO mode");
> +	PMD_INIT_LOG(DEBUG, "enabling LRO mode");
>  
>  	return 0;
>  }
> -- 
> 2.1.4
>