CPU Usage 100%

[LLarouanne]

Hello,
I encounter a problem on a switch 3600: the CPU is constantly at 100% ...

Here is the CPU information:

===== Current CPU usage info =====
CPU Usage Stat. Cycle: 22 (Second)
CPU Usage : 100%
CPU Usage Stat. Time : 2018-01-31 11:43:04
CPU Usage Stat. Tick : 0x2f4b73(CPU Tick High) 0xcb805faa(CPU Tick Low)
Actual Stat. Cycle : 0x1(CPU Tick High) 0x9bc5876(CPU Tick Low)

TaskName CPU Runtime(CPU Tick High/CPU Tick Low)
VIDL 0% 0/ 213375
TICK 0% 0/ 119ae0a
STMR 0% 0/ 2c5b61
DSTK 0% 0/ df228
SYSM 0% 0/ 10d04e
bDPC 83% 0/dede0abf
L2X0 0% 0/ 8f4d0a
bC.0 0% 0/ 1ac2343
bLK0 1% 0/ 5315a0b
L2X1 0% 0/ a3c2f6
bC.1 0% 0/ 207ca70
bLK1 1% 0/ 4126199
DQFD 0% 0/ 5384c6
DQIT 1% 0/ 3801d54
LPDT 0% 0/ 2c9d
STAT 0% 0/ 62412a
FMCK 0% 0/ 230e33
PSED 3% 0/ 849cfcd
T_DM 0% 0/ e78d5
mIPC 0% 0/ d347b
T_VA 0% 0/ 36245
DARP 0% 0/ e21d9
T_ST 0% 0/ de2a0
T_SI 0% 0/ fdd3b
TPBR 0% 0/ 2585ca
BGRT 0% 0/ 219511
SCAR 0% 0/ 2563bd5
RTMC 0% 0/ 2bfd27
bRX1 0% 0/ 1e0e53b
bRX2 0% 0/ 4b5a1b
VP 0% 0/ 335e
IPCB 0% 0/ 98b62a
RPCQ 0% 0/ 602dab
STM 0% 0/ 1a7c44
STMH 0% 0/ 100d33
PMOT 0% 0/ 5a05a6
EXCP 0% 0/ 449f1
IPCM 0% 0/ 553dd
INFO 0% 0/ 21ddd
DEV 0% 0/ 2026de
SOCK 0% 0/ fb065
ADJ4 0% 0/ 14f81e
SFLW 0% 0/ 8079b
ACL 0% 0/ 6e6c8
mac 0% 0/ 44c44
LAGG 0% 0/ 53131
MSTP 0% 0/ 184cd78
GARP 0% 0/ 426bff
CLST 0% 0/ c1cb6
NDP 0% 0/ a8636
NTDP 0% 0/ 536d5
HABP 0% 0/ 50253
CFD 0% 0/ 487ce7
RRPP 0% 0/ 164bb6
LLDP 0% 0/ e01d36
DLDP 0% 0/ dab6a
SMLK 0% 0/ 6e326
ARP 0% 0/ 5fdda4
IP 0% 0/ 6647cf
FSLH 0% 0/ 436f1
FSLR 0% 0/ 28fa5d
NTPT 0% 0/ 52907
VTYD 0% 0/ 2f8a16
ND 0% 0/ 3d1cdc
CWMP 0% 0/ 8b1aa
ACM 0% 0/ 1b8af4
LS 0% 0/ 269cce
RDSO 0% 0/ dc896
SC 0% 0/ 8e6cf
NAT 0% 0/ 40eba
BFD 0% 0/ 2ad8fb
STND 0% 0/ 13cbf7
ROUT 0% 0/ 6955ff
IFNT 0% 0/ 57a67
vt0 0% 0/ 1afc7f4

Can you tell me what is the "bDPC" task?

[parnassus]

What exact software version is running on your HP 3600 Switch? what is its actual uptime?