High CPU HP 5500-48G-4SFP-HI

[khaldeman]

Starting last Friday, one of my switches started reporting high response times.  Network ports don't seem to show a lot of traffic, but the CPU seems a bit busy.  I'm not sure what TD_M is, but that seems to be running a little high?

Anyone have any ideas what that is and why it would be spiking? Switch has been up for 314 days, and I have not altered the config on it.

HP Comware Platform Software, Software Version 5.20.99 Release 5206 HP A5500-48G-4SFP HI Switch with 2 interface Slots

CPU Usage Stat. Cycle: 58 (Second)
CPU Usage : 52%
CPU Usage Stat. Time : 2017-03-06 09:01:16
CPU Usage Stat. Tick : 0x67256(CPU Tick High) 0x4d880cc1(CPU Tick Low)
Actual Stat. Cycle : 0x0(CPU Tick High) 0xe7a82129(CPU Tick Low)

TaskName CPU Runtime(CPU Tick High/CPU Tick Low)
VIDL 48% 0/6fcc3f24
TICK 0% 0/ e1af0e
STMR 0% 0/ 273dfa
DSTK 0% 0/ 4aaf4
L2X1 4% 0/ 9e032ef
bC.1 1% 0/ 43a85e2
bLK1 0% 0/ 2485bab
L2X0 4% 0/ a0e8b18
bC.0 1% 0/ 42839c7
bLK0 1% 0/ 26c3e24
DQFD 1% 0/ 2785976
DQIT 2% 0/ 57ad7e3
LPDT 0% 0/ 75c
STAT 0% 0/ 204e03
FMCK 0% 0/ 380fd3
T_DM 25% 0/3b5824e0
mIPC 2% 0/ 51eef46
T_VA 0% 0/ 13897
DARP 0% 0/ 9625a
T_ST 0% 0/ 8a16f
T_SI 0% 0/ b21fe
TPBR 0% 0/ b1085
BGRT 0% 0/ 1143c4
MARP 0% 0/ 8c82e8
VMAC 0% 0/ 15c8f
SCAR 0% 0/ bdb3bd
RTMC 0% 0/ 25e09e
bRX1 0% 0/ 16a0ebf
bRX2 0% 0/ 3704f2
IUCT 0% 0/ 188ea7
bIP0 0% 0/ 20f6b
bIP1 0% 0/ 38264
NSET 0% 0/ 3d69ed
NSTM 0% 0/ b44cd6
VP 0% 0/ ac6
IPCB 0% 0/ a3c8e5
RPCQ 0% 0/ 537b67
STM 0% 0/ a3d01
STMH 0% 0/ 4994c
EXCP 0% 0/ 194d6
IPCM 0% 0/ 19971
INFO 0% 0/ 83d04
DEV 0% 0/ ef88d
SOCK 0% 0/ 14b77e
ADJ4 0% 0/ 74bc8
SFLW 0% 0/ 3b121
ACL 0% 0/ 464bc
mac 0% 0/ 16547
LAGG 0% 0/ 3fec5
MSTP 0% 0/ 17453f5
GARP 0% 0/ 179f17
CLST 0% 0/ 54c7f
NDP 0% 0/ 59221
NTDP 0% 0/ 1c028
HABP 0% 0/ 181da
CFD 0% 0/ 1c6601
RRPP 0% 0/ 78874
LLDP 0% 0/ b21668
DLDP 0% 0/ 6c092
SMLK 0% 0/ 31c40
ARP 0% 0/ 7d466d
IP 0% 0/ 6550a8
FSLH 0% 0/ 13ba4
FSLR 0% 0/ c3112
vt0 0% 0/ ffe0aa
NTPT 0% 0/ 59f08
VTYD 0% 0/ 274bf8
ND 0% 0/ 1b95d0
AGNT 0% 0/ 16ec3
SYSM 0% 0/ 16fb226
ACM 0% 0/ 1ff23a
LS 0% 0/ ada55
RDS 0% 0/ 79ae3
SC 0% 0/ 3da4f
NAT 0% 0/ 121b4
BFD 0% 0/ c376a
MFIB 0% 0/ 20ee6c
STND 0% 0/ 4a550
ROUT 0% 0/ 8921bb
TNLM 0% 0/ 1c474
IFNT 0% 0/ 30764
GMAC 0% 0/ 3140e
GMpt 0% 0/ 3552c3
DRVR 0% 0/ 519b7
PORT 0% 0/ 4af2c
CCHK 0% 0/ 1a8a3

[parnassus]

Uptime value apart (sometime a planned reboot fixes many things) I noticed that software version R5206 is already pretty old now (2013?): what about trying an update to latest software version (probably it should be a R55xxPyy series instead of R52xxPyy series, exactly the very latest R5501P31 of January 2017) to see if CPU Usage falls - during normal operations - below the 50% threshold?

Which special features are actually active on that unit? do you have any port(s) flapping?