em driver, 82574L chip, and possibly ASPM

[Mike Tancsa]

On 12/24/2010 5:44 PM, Jan Koum wrote:
> hi Ivan and Mike,
> 
> wanted to follow up and see if you found a solid long-term solution to this
> bug. we are still seeing this problem in our 8.2 environment with ASPM
> already disabled.  here is what we have:
> 
> 1. motherboard is SuperMicro X8SIE-LN4F Intel Xeon:
> 

Hi Jack,
	Looks like this problem is not completely gone :(  I have seen it now on 2 different machines. On the RELENG_7, ASPM was enabled in the BIOS (INTEL  DH55TC MB), so I have disabled that for now to see what happens. On the RELENG_8 machine, its been a LOT better since 7.1.8, but again it happened last night during a backup


dev.em.1.%desc: Intel(R) PRO/1000 Network Connection 7.1.8
dev.em.1.%driver: em
dev.em.1.%location: slot=0 function=0 handle=\_SB_.PCI0.PEX4.HART
dev.em.1.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x34ec class=0x020000
dev.em.1.%parent: pci10
dev.em.1.nvm: -1
dev.em.1.debug: -1
dev.em.1.rx_int_delay: 0
dev.em.1.tx_int_delay: 66
dev.em.1.rx_abs_int_delay: 66
dev.em.1.tx_abs_int_delay: 66
dev.em.1.rx_processing_limit: 100
dev.em.1.flow_control: 3
dev.em.1.link_irq: 346
dev.em.1.mbuf_alloc_fail: 0
dev.em.1.cluster_alloc_fail: 0
dev.em.1.dropped: 0
dev.em.1.tx_dma_fail: 0
dev.em.1.rx_overruns: 0
dev.em.1.watchdog_timeouts: 0
dev.em.1.device_control: 1209008712
dev.em.1.rx_control: 67141634
dev.em.1.fc_high_water: 18432
dev.em.1.fc_low_water: 16932
dev.em.1.queue0.txd_head: 231
dev.em.1.queue0.txd_tail: 231
dev.em.1.queue0.tx_irq: 828804317
dev.em.1.queue0.no_desc_avail: 0
dev.em.1.queue0.rxd_head: 692
dev.em.1.queue0.rxd_tail: 691
dev.em.1.queue0.rx_irq: 1035962009
dev.em.1.mac_stats.excess_coll: 0
dev.em.1.mac_stats.single_coll: 0
dev.em.1.mac_stats.multiple_coll: 0
dev.em.1.mac_stats.late_coll: 0
dev.em.1.mac_stats.collision_count: 0
dev.em.1.mac_stats.symbol_errors: 0
dev.em.1.mac_stats.sequence_errors: 0
dev.em.1.mac_stats.defer_count: 0
dev.em.1.mac_stats.missed_packets: 395
dev.em.1.mac_stats.recv_no_buff: 22
dev.em.1.mac_stats.recv_undersize: 0
dev.em.1.mac_stats.recv_fragmented: 0
dev.em.1.mac_stats.recv_oversize: 0
dev.em.1.mac_stats.recv_jabber: 0
dev.em.1.mac_stats.recv_errs: 0
dev.em.1.mac_stats.crc_errs: 0
dev.em.1.mac_stats.alignment_errs: 0
dev.em.1.mac_stats.coll_ext_errs: 0
dev.em.1.mac_stats.xon_recvd: 0
dev.em.1.mac_stats.xon_txd: 0
dev.em.1.mac_stats.xoff_recvd: 0
dev.em.1.mac_stats.xoff_txd: 0
dev.em.1.mac_stats.total_pkts_recvd: 2374779279
dev.em.1.mac_stats.good_pkts_recvd: 2374778884
dev.em.1.mac_stats.bcast_pkts_recvd: 91866
dev.em.1.mac_stats.mcast_pkts_recvd: 14709
dev.em.1.mac_stats.rx_frames_64: 3694217
dev.em.1.mac_stats.rx_frames_65_127: 42644392
dev.em.1.mac_stats.rx_frames_128_255: 52724116
dev.em.1.mac_stats.rx_frames_256_511: 768263
dev.em.1.mac_stats.rx_frames_512_1023: 28549934
dev.em.1.mac_stats.rx_frames_1024_1522: 2246397962
dev.em.1.mac_stats.good_octets_recvd: 3420561094673
dev.em.1.mac_stats.good_octets_txd: 130129757787
dev.em.1.mac_stats.total_pkts_txd: 1553568635
dev.em.1.mac_stats.good_pkts_txd: 1553568635
dev.em.1.mac_stats.bcast_pkts_txd: 13131
dev.em.1.mac_stats.mcast_pkts_txd: 9
dev.em.1.mac_stats.tx_frames_64: 564243380
dev.em.1.mac_stats.tx_frames_65_127: 864123029
dev.em.1.mac_stats.tx_frames_128_255: 119250324
dev.em.1.mac_stats.tx_frames_256_511: 240369
dev.em.1.mac_stats.tx_frames_512_1023: 554247
dev.em.1.mac_stats.tx_frames_1024_1522: 5157286
dev.em.1.mac_stats.tso_txd: 1216433
dev.em.1.mac_stats.tso_ctx_fail: 0
dev.em.1.interrupts.asserts: 51
dev.em.1.interrupts.rx_pkt_timer: 0
dev.em.1.interrupts.rx_abs_timer: 0
dev.em.1.interrupts.tx_pkt_timer: 0
dev.em.1.interrupts.tx_abs_timer: 0
dev.em.1.interrupts.tx_queue_empty: 0
dev.em.1.interrupts.tx_queue_min_thresh: 0
dev.em.1.interrupts.rx_desc_min_thresh: 0
dev.em.1.interrupts.rx_overrun: 0


em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC>
        ether 00:15:17:ed:68:a4
        inet xx.yy.13.254 netmask 0xffffff00 broadcast zz.yy.13.255
        inet6 fe80::215:17ff:feed:68a4%em1 prefixlen 64 scopeid 0x3 
        inet xx.zz.1.1 netmask 0xffffff00 broadcast xx.zz.1.255
        inet6 2607:f3e0:xxxxxxxxxx prefixlen 64 
        nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active

em1 at pci0:10:0:0:        class=0x020000 card=0x34ec8086 chip=0x10d38086 rev=0x00 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Intel 82574L Gigabit Ethernet Controller (82574L)'
    class      = network
    subclass   = ethernet
    cap 01[c8] = powerspec 2  supports D0 D3  current D0
    cap 05[d0] = MSI supports 1 message, 64 bit 
    cap 10[e0] = PCI-Express 1 endpoint max data 128(256) link x1(x1)
    cap 11[a0] = MSI-X supports 5 messages in map 0x1c enabled
ecap 0001[100] = AER 1 0 fatal 0 non-fatal 0 corrected
ecap 0003[140] = Serial 1 001517ffffed68a4

The MB is an INTEL  S3420GPX

	---Mike