2048 Hardware Programming Virtualization 
Brendan Gregg
AUGUST 18, 2019
bpftrace uses BPF (Berkeley Packet Filter), an in-kernel execution engine that processes a virtual instruction set. The probe specifies what events to instrument, the filter is optional and can filter down the events based on a boolean expression, and the action is the mini program that runs. There's no filter. BEGIN Start of bpftrace.
SQL Server According to Bob
JANUARY 11, 2020
ReadFile WriteFile ReadFileScatter WriteFileGather GetOverlappedResult For extended details on the 823 error, see Error message 823 may indicate hardware problems or system problems ( [link] i crosoft.com/default.aspx?scid=kb scid=kb ; en-us;828339 ) on the Microsoft Web site.
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