I recently upgraded my 4/330 to -current (last time I did this was Jul 27).
I'm now getting a fair number of silo overflows, e.g. :

  Oct 25 08:34:22 orthanc /netbsd: zstty0: 1 silo overflow, 0 ibuf floods
  Oct 25 08:35:23 orthanc /netbsd: zstty0: 3 silo overflows, 0 ibuf floods
  Oct 25 08:39:00 orthanc /netbsd: zstty0: 2 silo overflows, 0 ibuf floods
  Oct 25 08:43:23 orthanc /netbsd: zstty0: 1 silo overflow, 0 ibuf floods

The numbers are usually 1 or 2 when the machine is fairly quiet, but rise to
5 or 6 when it's busy.  tty0 is connected to a modem at 38400 bps.

Any thoughts on what change might have caused this?

Thanks,

J

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