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| Common themes: |
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| Time |
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| • | clocks
are of varying precision, accuracy and drift |
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| • | where
are timestamps applied? |
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| – | in
hardware, at start or end of packet/cell? |
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| – | in
hardware, after a queue (FORE cards, NLANR .crl)? |
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| – | in
the device driver? in the
kernel? in user space? |
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| – | after
buffers and queues? after mixing
with other data? |
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| • | how
is time synchronized between local (hardware |
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| timestamps) and remote clocks? NTP considered harmful? |
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