Gordon, Nov 10
This TRH has been flakey lately, dropping out, but then coming back on its own.
Here's the result of a data_dump of data late on Nov 9, and then using awk to look for gaps over 2 seconds. There are 10 gaps over 2 seconds in this 6 hours, one of them 355 seconds, and one 5678:
nice data_dump -i 3,40 -A isfs_20121109_175854.dat.bz2 isfs_20121109_200000.dat.bz2 > /tmp/TRH_a3_nov_9.dat awk '{if($5 > 2) print $0}' /tmp/TRH_a3_nov_9.dat |--- date time --------| deltaT len bytes 2012 11 09 18:38:20.3220 2.981 37 TRH48 8.93 58.04 35 0 1227 112 110\r\n 2012 11 09 18:39:50.0419 20.94 37 TRH48 8.89 57.53 34 0 1226 111 108\r\n 2012 11 09 18:42:33.5019 38.87 37 TRH48 9.10 55.05 33 0 1231 106 103\r\n 2012 11 09 18:44:11.1819 3.989 37 TRH48 8.77 56.01 33 0 1223 108 103\r\n 2012 11 09 18:45:08.9919 3.99 37 TRH48 8.89 56.03 34 0 1226 108 108\r\n 2012 11 09 19:10:14.8819 5.983 38 TRH48 10.02 53.16 34 0 1254 102 107\r\n 2012 11 09 19:11:29.6224 14.95 37 TRH48 10.50 52.72 31 0 1266 101 99\r\n 2012 11 09 19:18:55.0620 355.8 37 TRH48 10.58 50.67 34 0 1268 97 107\r\n 2012 11 09 19:38:58.6419 187.3 37 TRH48 11.99 47.75 33 0 1303 91 105\r\n 2012 11 09 21:15:08.7021 5678 36 TRH48 12.96 40.98 31 0 1327 78 99\r\n
One can see bad characters just before the 355 second gap above:
2012 11 09 19:12:56.3119 0.9999 38 TRH48 10.34 52.18 33 0 1262 100 104\r\n 2012 11 09 19:12:58.3019 1.99 38 TRH48 10.34 52.69 35 0 1262 101 110\r\n 2012 11 09 19:12:59.2975 0.9957 15 \xd42f\xb3g\x9097 102\r\n 2012 11 09 19:18:55.0620 355.8 37 TRH48 10.58 50.67 34 0 1268 97 107\r\n 2012 11 09 19:18:56.0619 0.9998 37 TRH48 10.62 50.68 35 0 1269 97 110\r\n
Similar bad characters were seen at the other gaps.
Serial port 5 shows 17 fe (framing errors) and 3 brks since the last reboot 2 days ago. The other serial ports look clean:
cat /proc/tty/driver/serial serinfo:1.0 driver revision: 0: uart:XScale mmio:0x40100000 irq:38 tx:3079 rx:0 RTS|DTR|CD 1: uart:XScale mmio:0x40200000 irq:37 tx:0 rx:4387536 RTS|DTR 2: uart:XScale mmio:0x40700000 irq:36 tx:15 rx:58501140 RTS|DTR 3: uart:XR16850 mmio:0x10000000 irq:122 tx:0 rx:0 4: uart:XR16850 mmio:0x10800000 irq:123 tx:0 rx:0 5: uart:ST16654 port:F1000100 irq:3 tx:119 rx:7913814 fe:17 brk:3 RTS|DTR 6: uart:ST16654 port:F1000108 irq:3 tx:0 rx:8612447 RTS|DTR 7: uart:ST16654 port:F1000110 irq:3 tx:0 rx:4630167 RTS|DTR 8: uart:ST16654 port:F1000118 irq:3 tx:0 rx:1462530 RTS|DTR 9: uart:ST16654 port:F1000120 irq:3 tx:4871 rx:35077537 RTS|DTR
My best guess is that it's a cable problem.