I have not checked the code, but I suspect that

* You see no timeout errors because you disabled timeouts.

* You see no I/O delay warnings because you disabled I/O delays.

Said that, I would not be surprised if disabling max-swap-rate reduces
the probability of an I/O message getting stuck in the queue because
without artificial message delays, the probability of a kid dying with a
pending message is naturally lower.

There are probably some bugs in the code even when no kids are dying,
but there is currently no information warranting an investigation AFAICT.

Sadly the same thing occurred again. It seems the hole is deeper lol.. max-swap-rate/swap-timeout are still disabled... I couldn't find any previous messages that could give a clue why this is happening.. :/

2017/03/15 16:18:07 kid6| urlParse: Illegal hostname 'static..unocdn.com'
2017/03/15 16:18:07 kid4| urlParse: Illegal hostname 'static..unocdn.com'
2017/03/15 16:19:07 kid6| WARNING: Closing client connection due to lifetime timeout
2017/03/15 16:19:07 kid6| http://177.105.192.70:9000/oliberalcbn.mp3
2017/03/15 16:19:58 kid1| Weak ETags are not allowed in If-Range: "8083-1488088507000" ? "8083-1488088507000" 2017/03/15 16:20:02 kid1| WARNING: Closing client connection due to lifetime timeout
2017/03/15 16:20:02 kid1|       http://45.43.200.26:27388/;
2017/03/15 16:20:51 kid6| WARNING: Closing client connection due to lifetime timeout
2017/03/15 16:20:51 kid6|       http://45.43.200.26:27388/;
2017/03/15 16:22:43 kid1| ctx: enter level 0: 'http://storage.mais.uol.com.br/11848044.flv'
2017/03/15 16:22:43 kid1| WARNING: Malformed Content-Length[1]=-
2017/03/15 16:23:03 kid1| ctx: exit level  0
2017/03/15 16:23:03 kid1| ctx: enter level 0: 'http://storage.mais.uol.com.br/11848044.flv'
2017/03/15 16:23:03 kid1| WARNING: Malformed Content-Length[1]=-
2017/03/15 16:28:45 kid1| ctx: exit level  0
2017/03/15 16:28:45 kid1| SECURITY ALERT: Missing hostname in URL 'http://'. see access.log for details. 2017/03/15 16:33:26 kid2| SECURITY ALERT: Missing hostname in URL 'http://'. see access.log for details. 2017/03/15 16:33:27 kid3| SECURITY ALERT: Missing hostname in URL 'http://'. see access.log for details. 2017/03/15 16:37:44 kid4| ipcacheParse No Address records in response to 'a.sitemeter.com' 2017/03/15 16:37:44 kid4| ipcacheParse No Address records in response to 'a.sitemeter.com' 2017/03/15 16:43:17 kid3| WARNING: Closing client connection due to lifetime timeout 2017/03/15 16:43:17 kid3| http://www.superclipping.com.br/Uploads/video/15.03.2017/f17f8022f44148f4bc53d75db766b154.mp4 2017/03/15 16:46:44 kid4| local=10.1.10.9:3080 remote=10.1.3.242:54705 FD 1958 flags=1: read/write failure: (113) No route to host 2017/03/15 16:46:54 kid1| local=10.1.10.9:3080 remote=10.1.3.242:49770 FD 539 flags=1: read/write failure: (113) No route to host 2017/03/15 16:47:01 kid6| local=10.1.10.9:3080 remote=10.1.3.242:62607 FD 2158 flags=1: read/write failure: (113) No route to host 2017/03/15 16:47:47 kid6| local=10.1.10.9:3080 remote=10.1.3.242:62605 FD 2141 flags=1: read/write failure: (113) No route to host
2017/03/15 16:52:52 kid6| Starting new store_id helpers...
2017/03/15 16:52:52 kid6| helperOpenServers: Starting 1/50 'store-id.pl' processes
2017/03/15 16:52:52 kid6| Starting new store_id helpers...
2017/03/15 16:52:52 kid6| helperOpenServers: Starting 1/50 'store-id.pl' processes
2017/03/15 16:54:21 kid1| Weak ETags are not allowed in If-Range: "0" ? "0"
2017/03/15 16:55:31 kid1| Weak ETags are not allowed in If-Range: "54133-1387455809000" ? "54133-1387455809000" 2017/03/15 16:57:21 kid1| SECURITY ALERT: Missing hostname in URL 'http://'. see access.log for details. 2017/03/15 17:03:15 kid4| Weak ETags are not allowed in If-Range: "5878dd6c-4363" ? "5878dd6c-4363" 2017/03/15 17:30:03 kid1| SECURITY ALERT: Missing hostname in URL 'http://'. see access.log for details. 2017/03/15 17:57:31 kid1| WARNING: Closing client connection due to lifetime timeout 2017/03/15 17:57:31 kid1| http://liveupdate.gocyberlink.com/bigbang/ap/query_xml.jsp 2017/03/15 18:09:30 kid1| WARNING: Closing client connection due to lifetime timeout 2017/03/15 18:09:30 kid1| http://cloudav.downloads.pandasecurity.com/nano/pavsignano/nano_1/av_1/plug_0100000000/plug_0100000000_20170315_014235.rar
2017/03/15 18:20:49 kid1| urlParse: URL too large (10319 bytes)
2017/03/15 18:35:57 kid1| Weak ETags are not allowed in If-Range: "0" ? "0"
2017/03/15 18:36:50 kid4| WARNING: Closing client connection due to lifetime timeout 2017/03/15 18:36:50 kid4| http://au.ff.avast.com/android/avast-android-vps-v4-release.apk 2017/03/15 18:50:07 kid1| ipcacheParse No Address records in response to 'www.portaldoartesanato.com.br' 2017/03/15 18:50:07 kid1| ipcacheParse No Address records in response to 'www.portaldoartesanato.com.br' 2017/03/15 18:50:07 kid1| ipcacheParse No Address records in response to 'www.portaldoartesanato.com.br' 2017/03/15 18:50:07 kid1| ipcacheParse No Address records in response to 'www.portaldoartesanato.com.br' 2017/03/15 19:01:29 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 19:15:05 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 19:18:02 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 19:22:27 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 19:26:19 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 19:43:52 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 19:44:25 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 19:44:54 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 19:48:25 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 19:51:03 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:02:08 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:02:22 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:03:13 kid1| WARNING: Closing client connection due to lifetime timeout 2017/03/15 20:03:13 kid1| http://static.bn-static.com/css-45023/desktop/page_home.css 2017/03/15 20:05:05 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:11:31 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:15:08 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:16:51 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:18:55 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:28:52 kid1| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:30:06 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 2 out of 2 I/Os 2017/03/15 20:31:21 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:33:32 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:33:51 kid1| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:42:33 kid1| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:43:33 kid1| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:47:54 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:49:29 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:50:29 kid1| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:51:28 kid1| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 2 out of 2 I/Os 2017/03/15 20:51:57 kid1| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:57:09 kid2| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os 2017/03/15 20:58:44 kid1| WARNING: communication with /cache2/rock may be too slow or disrupted for about 7.00s; rescued 1 out of 1 I/Os


--
Atenciosamente / Best Regards,

Heiler Bemerguy
Network Manager - CINBESA
55 91 98151-4894/3184-1751

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