System freezes on high network use


since upgraded hs, has been bringing down network connection during [big , fast] file transfers. not sure if it's network or apfs, has been happening since upgrading hs [2015 mbp], except 1 similar experience on mac mini when playing around apfs running sierra.

first network goes down completely, rest of system becomes unresponsive. after few minutes fine, have hard restart things going.

here's dmesg output.

code:
 rpt: 468470.482255: [7-4]  0 suppr arpt: 468470.482259: [14:8] 1 ncons arpt: 468470.482263: [15]   0 acked arpt: 468470.482267: txpktpend ac_bk 0 ac_be 256 ac_vi 0 ac_vo 0 bcmc 0 atim 0 arpt: 468470.483282: txpkt (mpdu) complete arpt: 468470.483291: frameid: 0x0211   seq: 0x0bda   txstatus: 0x0103 arpt: 468470.483315: ack 0 im 0 pm 0 suppr 0 (none) arpt: 468470.483319: cnt(rts_tx)=0 cnt(frag_tx_cnt)=7 cnt(cts_rx_cnt)=0 arpt: 468470.483324: dequeuetime: 0x00003d08 lasttxtime: 0x84da7ebd phytxerr:   0x0000 rxackrssi: 0x0081 rxacksq: 0x00ff arpt: 468470.483343: raw[0]    1 valid arpt: 468470.483349: [2]    0 im arpt: 468470.483353: [3]    0 pm arpt: 468470.483356: [7-4]  0 suppr arpt: 468470.483360: [14:8] 1 ncons arpt: 468470.483366: [15]   0 acked arpt: 468470.483373: txpktpend ac_bk 0 ac_be 256 ac_vi 0 ac_vo 0 bcmc 0 atim 0 arpt: 468470.484171: txpkt (mpdu) complete arpt: 468470.484178: frameid: 0x0411   seq: 0x0bdb   txstatus: 0x0103 arpt: 468470.484191: ack 0 im 0 pm 0 suppr 0 (none) arpt: 468470.484196: cnt(rts_tx)=0 cnt(frag_tx_cnt)=7 cnt(cts_rx_cnt)=0 arpt: 468470.484201: dequeuetime: 0x00004638 lasttxtime: 0x84da823c phytxerr:   0x0000 rxackrssi: 0x0081 rxacksq: 0x00ff arpt: 468470.484219: raw[0]    1 valid arpt: 468470.484226: [2]    0 im arpt: 468470.484229: [3]    0 pm arpt: 468470.484233: [7-4]  0 suppr arpt: 468470.484236: [14:8] 1 ncons arpt: 468470.484240: [15]   0 acked arpt: 468470.484245: txpktpend ac_bk 0 ac_be 256 ac_vi 0 ac_vo 0 bcmc 0 atim 0 arpt: 468470.485131: txpkt (mpdu) complete arpt: 468470.485140: frameid: 0x0611   seq: 0x0bdc   txstatus: 0x0103 arpt: 468470.485153: ack 0 im 0 pm 0 suppr 0 (none) arpt: 468470.485158: cnt(rts_tx)=0 cnt(frag_tx_cnt)=7 cnt(cts_rx_cnt)=0 arpt: 468470.485163: dequeuetime: 0x00004f68 lasttxtime: 0x84da85f6 phytxerr:   0x0000 rxackrssi: 0x0081 rxacksq: 0x00ff arpt: 468470.485182: raw[0]    1 valid arpt: 468470.485188: [2]    0 im arpt: 468470.485191: [3]    0 pm arpt: 468470.485195: [7-4]  0 suppr arpt: 468470.485207: [14:8] 1 ncons arpt: 468470.485212: [15]   0 acked arpt: 468470.485217: txpktpend ac_bk 0 ac_be 256 ac_vi 0 ac_vo 0 bcmc 0 atim 0 arpt: 468470.486025: txpkt (mpdu) complete arpt: 468470.486034: frameid: 0x0811   seq: 0x0bdd   txstatus: 0x0103 arpt: 468470.486047: ack 0 im 0 pm 0 suppr 0 (none) arpt: 468470.486052: cnt(rts_tx)=0 cnt(frag_tx_cnt)=7 cnt(cts_rx_cnt)=0 arpt: 468470.486057: dequeuetime: 0x00005898 lasttxtime: 0x84da8974 phytxerr:   0x0000 rxackrssi: 0x0081 rxacksq: 0x00ff arpt: 468470.486075: raw[0]    1 valid arpt: 468470.486081: [2]    0 im arpt: 468470.486085: [3]    0 pm arpt: 468470.486089: [7-4]  0 suppr arpt: 468470.486092: [14:8] 1 ncons arpt: 468470.486096: [15]   0 acked arpt: 468470.486101: txpktpend ac_bk 0 ac_be 256 ac_vi 0 ac_vo 0 bcmc 0 atim 0 arpt: 468470.486951: txpkt (mpdu) complete arpt: 468470.486959: frameid: 0x0a11   seq: 0x0bde   txstatus: 0x0103 arpt: 468470.486973: ack 0 im 0 pm 0 suppr 0 (none) arpt: 468470.486977: cnt(rts_tx)=0 cnt(frag_tx_cnt)=7 cnt(cts_rx_cnt)=0 arpt: 468470.486982: dequeuetime: 0x000061c8 lasttxtime: 0x84da8d12 phytxerr:   0x0000 rxackrssi: 0x0081 rxacksq: 0x00ff arpt: 468470.487001: raw[0]    1 valid arpt: 468470.487007: [2]    0 im arpt: 468470.487011: [3]    0 pm arpt: 468470.487014: [7-4]  0 suppr arpt: 468470.487018: [14:8] 1 ncons arpt: 468470.487021: [15]   0 acked arpt: 468470.487026: txpktpend ac_bk 0 ac_be 256 ac_vi 0 ac_vo 0 bcmc 0 atim 0 arpt: 468470.487803: txpkt (mpdu) complete arpt: 468470.487813: frameid: 0x0c11   seq: 0x0bdf   txstatus: 0x0103 arpt: 468470.487826: ack 0 im 0 pm 0 suppr 0 (none) arpt: 468470.487831: cnt(rts_tx)=0 cnt(frag_tx_cnt)=7 cnt(cts_rx_cnt)=0 arpt: 468470.487837: dequeuetime: 0x00001618 lasttxtime: 0x84da9068 phytxerr:   0x0000 rxackrssi: 0x0081 rxacksq: 0x00ff arpt: 468470.487863: raw[0]    1 valid arpt: 468470.487869: [2]    0 im arpt: 468470.487873: [3]    0 pm arpt: 468470.487876: [7-4]  0 suppr arpt: 468470.487880: [14:8] 1 ncons arpt: 468470.487884: [15]   0 acked arpt: 468470.487888: txpktpend ac_bk 0 ac_be 256 ac_vi 0 ac_vo 0 bcmc 0 atim 0 starting poll type 4 restarting poll type 4 command 0x2 completed. incount: 2 data:0x5command 0x1 completed. incount: 2 data:0x1001command 0x16 completed. incount: 2 data:0x40e0command 0xa completed. incount: 2 data:0x0command 0xb completed. incount: 2 data:0x0command 0x12 completed. incount: 2 data:0xffffcommand 0x13 completed. incount: 2 data:0xffffcommand 0xf completed. incount: 2 data:0x16b5command 0x10 completed. incount: 2 data:0x175esmartbattery: finished polling type 4 sandbox: assetcache(420) deny(1) file-read-metadata /volumes sandbox: assetcache(420) deny(1) file-read-metadata /volumes sandbox: deleted(424) deny(1) file-read-data /library/messagetracer/submitdiaginfo.default.domains.searchtree sandbox: deleted(424) deny(1) file-read-data /library/messagetracer/submitdiaginfo.default.domains.searchtree sandbox: deleted(424) deny(1) file-read-data /library/messagetracer/submitdiaginfo.default.domains.searchtree sandbox: deleted(424) deny(1) file-read-data /library/messagetracer/submitdiaginfo.default.domains.searchtree sandbox: idecachedeleteap(67323) deny(1) mach-lookup com.apple.coresymbolicationd sandbox: deleted(424) deny(1) file-read-data /library/messagetracer/submitdiaginfo.default.domains.searchtree sandbox: deleted(424) deny(1) file-read-data /library/messagetracer/submitdiaginfo.default.domains.searchtree sandbox: deleted(424) deny(1) file-read-data /library/messagetracer/submitdiaginfo.default.domains.searchtree sandbox: deleted(424) deny(1) file-read-data /library/messagetracer/submitdiaginfo.default.domains.searchtree sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377 sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377 sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377 sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377 sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377 sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377 sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/uploads sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/uploads sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/configuration.plist sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/configuration.plist sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/options.plist sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/options.plist sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/tasks.plist sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/tasks.plist sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/sessions.plist sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/sessions.plist starting poll type 2 restarting poll type 2 command 0x2 completed. incount: 2 data:0x5command 0x1 completed. incount: 2 data:0x1001command 0x16 completed. incount: 2 data:0x40e0command 0x53 completed. incount: 2 data:0x0command 0x54 completed. incount: 2 data:0xe443command 0xa completed. incount: 2 data:0x0command 0xb completed. incount: 2 data:0x0command 0xc completed. incount: 2 data:0x1command 0x11 completed. incount: 2 data:0xffffcommand 0x3f completed. incount: 2 data:0x10b4command 0x3e completed. incount: 2 data:0x10b4command 0x3d completed. incount: 2 data:0x10b4command 0x3c completed. incount: 2 data:0x0command 0x12 completed. incount: 2 data:0xffffcommand 0x9 completed. incount: 2 data:0x321ccommand 0x8 completed. incount: 2 data:0xbdccommand 0x17 completed. incount: 2 data:0x175command 0x13 completed. incount: 2 data:0xffffcommand 0xf completed. incount: 2 data:0x16b5command 0x10 completed. incount: 2 data:0x175esmartbattery: finished polling type 2 sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/tasks.plist sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/tasks.plist sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/tasks.plist sandbox: fseventsd(51) system policy: allow file-read-metadata /private/var/folders/9r/0dks99sj3kzf438ys4ynrnw80000gn/0/com.apple.nsurlsessiond/e8c9768780a371f36651ab699d884e881706b377/55dfa4ff72bf54cfe39cc4396239a63baf2ec55a/tasks.plist ioconsoleusers: time(0) 0->0, lin 1, llk 0,  ioconsoleusers: gioscreenlockstate 1, hs 0, bs 0, 0, sm 0x0 loginwindow not entitledloginwindow not entitledsteam_osx not entitledsteam_osx not entitledsteam_osx not entitledsteam_osx not entitledsteam_osx not entitledsteam_osx not entitledloginwindow not entitledsteam_osx not entitledsteam_osx not entitledsteam_osx not entitledloginwindow not entitledlogimgrdaemon not entitledloginwindow not entitledlogimgrdaemon not entitledsteam_osx not entitledsteam_osx not entitledsteam_osx not entitledsteam_osx not entitledsteam_osx not entitledsteam_osx not entitledioconsoleusers: time(0) 0->0, lin 1, llk 0,  ioconsoleusers: gioscreenlockstate 1, hs 0, bs 0, 0, sm 0x0 keybag_operation:239: read apfs/container keybag (v2, 3 keys, 464 bytes)
any ideas folks?
 



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