Messages in this thread | | | Subject | Re: [PATCH V2 net 13/20] net/ena: change driver's default timeouts | From | Netanel Belgazal <> | Date | Mon, 5 Dec 2016 20:28:17 +0200 |
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On 12/05/2016 06:35 AM, Matt Wilson wrote: > On Sun, Dec 04, 2016 at 03:19:31PM +0200, Netanel Belgazal wrote: > > ... because? (they turned out to be too aggressive, I believe.)
Yes, The timeout were too aggressive on some specific machines.
>> Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com> >> --- >> drivers/net/ethernet/amazon/ena/ena_com.c | 4 ++-- >> drivers/net/ethernet/amazon/ena/ena_netdev.h | 7 ++++--- >> 2 files changed, 6 insertions(+), 5 deletions(-) >> >> diff --git a/drivers/net/ethernet/amazon/ena/ena_com.c b/drivers/net/ethernet/amazon/ena/ena_com.c >> index 4147d6e..a550c8a 100644 >> --- a/drivers/net/ethernet/amazon/ena/ena_com.c >> +++ b/drivers/net/ethernet/amazon/ena/ena_com.c >> @@ -36,9 +36,9 @@ >> /*****************************************************************************/ >> >> /* Timeout in micro-sec */ >> -#define ADMIN_CMD_TIMEOUT_US (1000000) >> +#define ADMIN_CMD_TIMEOUT_US (3000000) >> >> -#define ENA_ASYNC_QUEUE_DEPTH 4 >> +#define ENA_ASYNC_QUEUE_DEPTH 16 > Why is this changed at the same time?
It related to the too aggressive thresholds. On some heavy loaded system we reached to a state where the AENQ was full so the driver missed some events.
> >> #define ENA_ADMIN_QUEUE_DEPTH 32 >> >> #define MIN_ENA_VER (((ENA_COMMON_SPEC_VERSION_MAJOR) << \ >> diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.h b/drivers/net/ethernet/amazon/ena/ena_netdev.h >> index c081fd3..ed42e07 100644 >> --- a/drivers/net/ethernet/amazon/ena/ena_netdev.h >> +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.h >> @@ -39,6 +39,7 @@ >> #include <linux/interrupt.h> >> #include <linux/netdevice.h> >> #include <linux/skbuff.h> >> +#include <linux/u64_stats_sync.h> > This change seems unrelated.
Removed to a different patch (will be submitted in a new patchset) > >> #include "ena_com.h" >> #include "ena_eth_com.h" >> @@ -100,7 +101,7 @@ >> /* Number of queues to check for missing queues per timer service */ >> #define ENA_MONITORED_TX_QUEUES 4 >> /* Max timeout packets before device reset */ >> -#define MAX_NUM_OF_TIMEOUTED_PACKETS 32 >> +#define MAX_NUM_OF_TIMEOUTED_PACKETS 128 >> >> #define ENA_TX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1)) >> >> @@ -116,9 +117,9 @@ >> #define ENA_IO_IRQ_IDX(q) (ENA_IO_IRQ_FIRST_IDX + (q)) >> >> /* ENA device should send keep alive msg every 1 sec. >> - * We wait for 3 sec just to be on the safe side. >> + * We wait for 6 sec just to be on the safe side. >> */ >> -#define ENA_DEVICE_KALIVE_TIMEOUT (3 * HZ) >> +#define ENA_DEVICE_KALIVE_TIMEOUT (6 * HZ) >> >> #define ENA_MMIO_DISABLE_REG_READ BIT(0) >>
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