The daqd process was dying every minute or so when it couldn't write frame. This was slowing down the network by writing a 2.9G core dump over NFS every minute or so. (In /opt/rtcds/caltech/c1/target/fb/).
The problem was /frames/ was 100% full.
Apparently, when we switched the fb over to Gentoo, we forgot to install crontab and a wiper script.
We will install crontab and get the wiper script installed.