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Code Block
drp-neh-cmp012:~$ more /usr/lib/systemd/system/tdetsim.service
[Unit]
Description=SimCam Device Manager
Requires=multi-user.target
After=multi-user.target

[Service]
Type=simple
ExecStart=/usr/local/sbin/kcuSim -s -d /dev/datadev_0
ExecStartPost=/sbin/insmod /usr/local/sbin/datadev.ko cfgTxCount=4 cfgRxCount=40
96 cfgSize=0x210000 cfgMode=0x2
ExecStop=
KillMode=process
IgnoreSIGPIPE=no
StandardOutput=syslog
StandardError=inherit

[Install]
WantedBy=multi-user.target

Interrupt Coalescing

We think this can help with errors like:

Code Block
May 25 07:23:59 XXXXXXX kernel: [13445315.881356] BUG: soft lockup - CPU#16 stuck for 23s! [yyyyyyy:81602]


From Matt: 

The datadev driver parameter for interrupt coalescing is "cfgIrqHold".  It is the number of 200 MHz clocks that an interrupt may be delayed to allow others to be serviced together.  You can see its current setting with cat /proc/datadev_0.  It looks like the current setting limits interrupts (per pcie device) to ~20 kHz.

[weaver@drp-srcf-cmp005 ~]$ cat /proc/datadev_0

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