Date: Mon, 4 Apr 2011 09:58:48 -0700 From: Jack Vogel <jfvogel@gmail.com> To: Arnaud Lacombe <lacombar@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: em(4) hang [Was: Re: igb(4) won't start with "igb0: Could not setup receive structures"] Message-ID: <BANLkTi=_jAXcmgMq6Hn2q0SEZi%2BzyGsxiw@mail.gmail.com> In-Reply-To: <AANLkTingvBGuOpocV02_GmnfzZJhps3BA2=vctJHK73p@mail.gmail.com> References: <AANLkTin64gGxRituE2B%2BsfVpRXt2QetdNLaV7HCf0uNE@mail.gmail.com> <AANLkTi=OjzMrjCPZ2VFDBf6URTaMoAzQqXbxWLv3d9mW@mail.gmail.com> <AANLkTikvbvr%2BY=Fh2fPVieHkTRix%2Bni61jVPct10NKfD@mail.gmail.com> <AANLkTina-MO4GuK66ZJN0hipp%2BVCa-CUxEz79rzRt-cZ@mail.gmail.com> <AANLkTi=OVSOitMvdjHexbv-fu0fA1WWOHo7gm-=MtPRf@mail.gmail.com> <AANLkTikmjmBKf9XUuSrYQz4T7xsR5ynvxHm2cjEDtFE%2B@mail.gmail.com> <AANLkTimut2BMxvhkkyREnK_izXek5tAT5jrw8tW%2BNKVY@mail.gmail.com> <AANLkTin1KKiPKEf_KquG0NrbqExDsGPU_tizam7tYV9Y@mail.gmail.com> <AANLkTi=0OkSLnz0cpv02Jrxz_piOhMT40m7xWK0NCiuH@mail.gmail.com> <AANLkTikUKx4NW=ejJ9N9JuWE9iB96y5p%2BdgUhZ3xZS5s@mail.gmail.com> <AANLkTingvBGuOpocV02_GmnfzZJhps3BA2=vctJHK73p@mail.gmail.com>
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Thanks for the good news, this change will need to go into the other drivers also. Jack On Mon, Apr 4, 2011 at 9:11 AM, Arnaud Lacombe <lacombar@gmail.com> wrote: > Hi Jack, > > On Fri, Apr 1, 2011 at 2:55 PM, Jack Vogel <jfvogel@gmail.com> wrote: > > Arnaud, > > > > Please try the code change I just checked into HEAD, it should finally > > resolve any hang that is due to mbufs not being refreshed. That's not > > to say there may not be other reasons out there but I'm keeping my > > fingers crossed that this is behind at least some of the hangs. > > > Thanks! > > I backported these latest changes to 7-stable on Friday and re-ran > tests. The box, and em0, has been fine for 3 days with the same test > pattern that made it hang after a few hour previously. > > Some stats: > # sysctl dev.em.0 > dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.2.3 > dev.em.0.%driver: em > dev.em.0.%location: slot=0 function=0 > dev.em.0.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 > subdevice=0x0000 class=0x020000 > dev.em.0.%parent: pci1 > dev.em.0.nvm: -1 > dev.em.0.debug: -1 > dev.em.0.rx_int_delay: 0 > dev.em.0.tx_int_delay: 66 > dev.em.0.rx_abs_int_delay: 66 > dev.em.0.tx_abs_int_delay: 66 > dev.em.0.rx_processing_limit: 100 > dev.em.0.flow_control: 3 > dev.em.0.eee_control: 0 > dev.em.0.link_irq: 20516 > dev.em.0.mbuf_alloc_fail: 0 > dev.em.0.cluster_alloc_fail: 0 > dev.em.0.dropped: 0 > dev.em.0.tx_dma_fail: 0 > dev.em.0.rx_overruns: 0 > dev.em.0.watchdog_timeouts: 0 > dev.em.0.device_control: 1477444168 > dev.em.0.rx_control: 67141634 > dev.em.0.fc_high_water: 18432 > dev.em.0.fc_low_water: 16932 > dev.em.0.queue0.txd_head: 175 > dev.em.0.queue0.txd_tail: 175 > dev.em.0.queue0.tx_irq: 433666694 > dev.em.0.queue0.no_desc_avail: 0 > dev.em.0.queue0.rxd_head: 654 > dev.em.0.queue0.rxd_tail: 653 > dev.em.0.queue0.rx_irq: 280606824 > dev.em.0.mac_stats.excess_coll: 0 > dev.em.0.mac_stats.single_coll: 0 > dev.em.0.mac_stats.multiple_coll: 0 > dev.em.0.mac_stats.late_coll: 0 > dev.em.0.mac_stats.collision_count: 0 > dev.em.0.mac_stats.symbol_errors: 0 > dev.em.0.mac_stats.sequence_errors: 0 > dev.em.0.mac_stats.defer_count: 0 > dev.em.0.mac_stats.missed_packets: 61034 > dev.em.0.mac_stats.recv_no_buff: 1974 > dev.em.0.mac_stats.recv_undersize: 0 > dev.em.0.mac_stats.recv_fragmented: 0 > dev.em.0.mac_stats.recv_oversize: 0 > dev.em.0.mac_stats.recv_jabber: 0 > dev.em.0.mac_stats.recv_errs: 0 > dev.em.0.mac_stats.crc_errs: 0 > dev.em.0.mac_stats.alignment_errs: 0 > dev.em.0.mac_stats.coll_ext_errs: 0 > dev.em.0.mac_stats.xon_recvd: 0 > dev.em.0.mac_stats.xon_txd: 21 > dev.em.0.mac_stats.xoff_recvd: 0 > dev.em.0.mac_stats.xoff_txd: 57286 > dev.em.0.mac_stats.total_pkts_recvd: 541037465 > dev.em.0.mac_stats.good_pkts_recvd: 540976431 > dev.em.0.mac_stats.bcast_pkts_recvd: 216 > dev.em.0.mac_stats.mcast_pkts_recvd: 0 > dev.em.0.mac_stats.rx_frames_64: 527887692 > dev.em.0.mac_stats.rx_frames_65_127: 13088739 > dev.em.0.mac_stats.rx_frames_128_255: 0 > dev.em.0.mac_stats.rx_frames_256_511: 0 > dev.em.0.mac_stats.rx_frames_512_1023: 0 > dev.em.0.mac_stats.rx_frames_1024_1522: 0 > dev.em.0.mac_stats.good_octets_recvd: 34785499386 > dev.em.0.mac_stats.good_octets_txd: 909161087533 > dev.em.0.mac_stats.total_pkts_txd: 761197293 > dev.em.0.mac_stats.good_pkts_txd: 761139986 > dev.em.0.mac_stats.bcast_pkts_txd: 1 > dev.em.0.mac_stats.mcast_pkts_txd: 0 > dev.em.0.mac_stats.tx_frames_64: 42029962 > dev.em.0.mac_stats.tx_frames_65_127: 40597084 > dev.em.0.mac_stats.tx_frames_128_255: 19591094 > dev.em.0.mac_stats.tx_frames_256_511: 31040789 > dev.em.0.mac_stats.tx_frames_512_1023: 69157381 > dev.em.0.mac_stats.tx_frames_1024_1522: 558723676 > dev.em.0.mac_stats.tso_txd: 0 > dev.em.0.mac_stats.tso_ctx_fail: 0 > dev.em.0.interrupts.asserts: 16073 > dev.em.0.interrupts.rx_pkt_timer: 0 > dev.em.0.interrupts.rx_abs_timer: 0 > dev.em.0.interrupts.tx_pkt_timer: 0 > dev.em.0.interrupts.tx_abs_timer: 1 > dev.em.0.interrupts.tx_queue_empty: 0 > dev.em.0.interrupts.tx_queue_min_thresh: 0 > dev.em.0.interrupts.rx_desc_min_thresh: 0 > dev.em.0.interrupts.rx_overrun: 3 > > # netstat -m > 33905/48040/81945 mbufs in use (current/cache/total) > 30335/2433/32768/32768 mbuf clusters in use (current/cache/total/max) > 2781/348 mbuf+clusters out of packet secondary zone in use (current/cache) > 3194/9607/12801/12800 4k (page size) jumbo clusters in use > (current/cache/total/max) > 0/0/0/6400 9k jumbo clusters in use (current/cache/total/max) > 0/0/0/3200 16k jumbo clusters in use (current/cache/total/max) > 83770K/55304K/139074K bytes allocated to network (current/cache/total) > 0/31564/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters) > 0/0/0 requests for jumbo clusters denied (4k/9k/16k) > 0/7/6656 sfbufs in use (current/peak/max) > 0 requests for sfbufs denied > 0 requests for sfbufs delayed > 0 requests for I/O initiated by sendfile > 0 calls to protocol drain routines > > - Arnaud >
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