Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	Suspended thread
From:	Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>
To:	"tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date:	Wed, 12 Jul 2023 20:38:57 +0000

Folks,

I have a Linux IOC (base 7.0.7) that is throwing the following error a few seconds after iocInit:

Thread % (0x7f711c021600) suspended

I would like to figure out what thread that is and why it is being suspended. This is the output of epicsThreadShowAll:

epics> epicsThreadShowAll

NAME EPICS ID LWP ID OSIPRI OSSPRI STATE

_main_ 0x1a631a0 71073 0 0 OK

errlog 0x1a82680 71075 10 0 OK

timerQueue 0x1c0c120 71076 60 0 OK

timerQueue 0x1c0c9d0 71077 60 0 OK

serial1 0x1c0dc20 71078 50 0 OK

taskwd 0x7f7210000d60 71079 10 0 OK

serial2 0x1c09fa0 71080 50 0 OK

serial3 0x1c10bf0 71081 50 0 OK

serial4 0x1c127c0 71082 50 0 OK

serial5 0x1c16de0 71083 50 0 OK

serial6 0x1c152b0 71084 50 0 OK

serial7 0x1c1a950 71085 50 0 OK

serial8 0x1c18ba0 71086 50 0 OK

serial9 0x1c1c800 71087 50 0 OK

serial10 0x1c20e30 71088 50 0 OK

serial11 0x1c1f5c0 71089 50 0 OK

serial12 0x1c23240 71090 50 0 OK

serial13 0x1c252a0 71091 50 0 OK

serial14 0x1c27320 71092 50 0 OK

serial15 0x1c2b4d0 71093 50 0 OK

serial17 0x1c29920 71094 50 0 OK

serial18 0x1c2d760 71095 50 0 OK

USB1808 0x1c31e20 71096 50 0 OK

MultiFunctionPol 0x1eaae90 71101 10 0 OK

USB3104 0x1f0b5e0 71102 50 0 OK

MultiFunctionPol 0x1fc1270 71105 10 0 OK

USBCTRPoller 0x203a580 71107 10 0 OK

EDIO24 0x209cb00 71108 50 0 OK

MultiFunctionPol 0x2158350 71110 10 0 OK

Koyo 0x21966d0 71111 50 0 OK

K1_Xn_Bit 0x2183020 71112 50 0 OK

K1_Xn_BitRead 0x21595e0 71114 50 0 OK

K1_Yn_In_Bit 0x215abb0 71115 50 0 OK

K1_Yn_In_BitRead 0x2191d60 71117 50 0 OK

K1_Cn_In_Bit 0x21933d0 71118 50 0 OK

K1_Cn_In_BitRead 0x2195b50 71120 50 0 OK

K1_Cn_Out_Bit 0x215c550 71121 50 0 OK

timerQueue 0x22035d0 71123 70 0 OK

cbLow 0x2390040 71124 59 0 OK

cbMedium 0x2203a90 71125 64 0 OK

cbHigh 0x2203bb0 71126 71 0 OK

dbCaLink 0x239fd60 71127 50 0 OK

PVAL 0x23a0280 71128 50 0 OK

timerQueue 0x21a23b0 71129 58 0 OK

soft_motor 0x23cf4b0 71130 49 0 OK

timerQueue 0x277d0c0 71131 10 0 OK

recDynInp 0x28dc140 71132 43 0 OK

recDynOut 0x28ddd90 71133 43 0 OK

PDB-event 0x2902ad0 71134 19 0 OK

pvAccess-client 0x2903370 71135 35 0 OK

UDP-rx 0.0.0.0:0 0x2924760 71136 50 0 OK

UDP-rx 164.54.16 0x2964eb0 71137 50 0 OK

UDP-rx 164.54.16 0x29652f0 71138 50 0 OK

UDP-rx 224.0.0.1 0x29858a0 71139 50 0 OK

scanOnce 0x298c340 71140 67 0 OK

scan-10 0x29c13d0 71141 60 0 OK

scan-5 0x29c1680 71142 61 0 OK

scan-2 0x29c1930 71143 62 0 OK

scan-1 0x29c1be0 71144 63 0 OK

scan-0.5 0x29c1e90 71145 64 0 OK

scan-0.2 0x29c2140 71146 65 0 OK

scan-0.1 0x29c23f0 71147 66 0 OK

CAS-TCP 0x29cb890 71148 18 0 OK

CAS-UDP 0x29cbb40 71149 16 0 OK

CAS-beacon 0x29cbdf0 71150 17 0 OK

PVAS timers 0x29cc480 71151 25 0 OK

ipToAsciiProxy 0x7f71800149b0 71152 10 0 OK

timerQueue 0x7f7180015170 71153 51 0 OK

TCP-acceptor 0x29cd0d0 71154 50 0 OK

UDP-rx 0.0.0.0:0 0x29cd690 71155 50 0 OK

UDP-rx 164.54.16 0x29cde80 71156 50 0 OK

UDP-rx 164.54.16 0x29ce300 71157 50 0 OK

UDP-rx 224.0.0.1 0x29cea90 71158 50 0 OK

Keithley2kDMM 0x2a587b0 71159 50 0 OK

CAC-event 0x7f712001db20 71160 51 0 OK

USBCTR_SNL 0x2a59e80 71161 50 0 OK

CAC-UDP 0x7f71800268e0 71162 52 0 OK

save_restore 0x2a5a320 71164 20 0 OK

timerQueue 0x7f711c00fa60 71165 21 0 OK

CAC-UDP 0x7f711c0204e0 71166 22 0 OK

CAC-repeater 0x7f7180027a00 71167 10 0 OK

Keithley2kDMM_1 0x7f712002e650 71170 50 0 OK

CAC-event 0x7f718006c160 71171 51 0 OK

CAC-TCP-recv 0x7f711000a770 71172 49 0 OK

CAC-TCP-send 0x7f711000ab40 71173 51 0 OK

CAC-TCP-recv 0x7f7110016f60 71174 49 0 OK

CAC-TCP-send 0x7f7110017360 71175 51 0 OK

CAC-TCP-recv 0x7f7110022b60 71176 19 0 OK

CAC-TCP-send 0x7f7110022f60 71177 21 0 OK

CAC-TCP-recv 0x7f711002f380 71178 49 0 OK

CAC-TCP-send 0x7f711002f780 71179 51 0 OK

CAC-TCP-recv 0x7f7110033d00 71180 49 0 OK

CAC-TCP-send 0x7f7110034100 71181 51 0 OK

timerQueue 0x7f717400fae0 71182 44 0 OK

CAC-UDP 0x7f71740206f0 71183 45 0 OK

CAC-TCP-recv 0x7f71480085f0 71184 42 0 OK

CAC-TCP-send 0x7f71480089f0 71185 44 0 OK

CAC-TCP-recv 0x7f7148014fa0 71186 42 0 OK

CAC-TCP-send 0x7f71480153a0 71187 44 0 OK

CAS-event 0x7f7144001460 71188 19 0 OK

CAS-client 0x7f7144001720 71189 20 0 OK

CAS-event 0x7f7144001de0 71190 19 0 OK

CAS-client 0x7f71440020a0 71191 20 0 OK

CAS-event 0x7f7144002760 71192 19 0 OK

CAS-client 0x7f7144002a20 71193 20 0 OK

CAC-event 0x7f711c3421a0 71194 21 0 OK

CAS-event 0x7f71440030e0 71195 35 0 OK

CAS-client 0x7f71440033a0 71196 36 0 OK

CAS-event 0x7f71440086d0 71197 19 0 OK

CAS-client 0x7f7144008990 71198 20 0 OK

CAS-event 0x7f7144009050 71199 35 0 OK

CAS-client 0x7f7144009310 71200 36 0 OK

CAS-event 0x7f71440099d0 71201 19 0 OK

CAS-client 0x7f7144009c90 71202 20 0 OK

CAS-event 0x7f714400ac80 71203 35 0 OK

CAS-client 0x7f714400af40 71204 36 0 OK

CAS-event 0x7f714400b620 71205 35 0 OK

CAS-client 0x7f714400b8e0 71206 36 0 OK

CAS-event 0x7f714400bfa0 71207 19 0 OK

CAS-client 0x7f714400c260 71208 20 0 OK

The thread that was suspended is not in the threads shown with epicsThreadShowAll.

I tried running the IOC under gdb and then I don’t get the thread suspended error.

Any suggestions on how I can track down what thread is being suspended and why?

Thanks,

Mark

Replies:: Re: Suspended thread Andrew Johnson via Tech-talk

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ANJ, 12 Jul 2023

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System