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<title>Core client: debugging</title>
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2002-08-20 23:54:17 +00:00
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<body bgcolor=ffffff>
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<h2>Core client: debugging</h2>
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<h3>Command-line options</h3>
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<p>
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Some command-line options intended for debugging:
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<dl>
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<dt> -exit_when_idle
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<dd> Exit when we're not working on anything and a scheduling server
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gives a "no work" return.
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<dt> -no_time_test
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<dd> Don't run performance benchmarks; used fixed numbers instead.
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<dt> -exit_after N
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<dd> Exit after about N seconds
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<dt> -giveup_after N
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<dd> Give up on file transfers after N seconds (default is 2 weeks)
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<dt> -limit_transfer_rate N
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<dd> Limit total network traffic to N bytes/sec.
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<dt> -min
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<dd> Put client in the background after starting up
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<h3>Logging and error output</h3>
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<p>
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The core client writes error messages to stderr.
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This mechanism is reserved for serious problems,
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i.e. those that reflect bugs in the core
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client program or conditions that require user intervention.
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<p>
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In addition, the core client can write a variety of "logging"
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information to stdout.
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The logging options are read from a file
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<b>log_flags.xml</b>.
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This file has the following format:
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<pre>
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<log_flags>
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[ flags ]
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</log_flags>
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</pre>
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The flags are as follows:
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<dl>
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<dt> <task/>
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<dd> Log the start, restart and completion of computational tasks.
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<dt> <file_xfer/>
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<dd> Log the start, restart and completion of file transfers.
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<dt> <sched_ops/>
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<dd> Log connections with scheduling servers.
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<dt> <state_debug/>
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<dd> Log changes to the "client state" data structures.
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<dt> <task_debug/>
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<dd> Log debugging information about task execution.
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<dt> <file_xfer_debug/>
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<dd> Log debugging information about file transfers.
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<dt> <sched_op_debug/>
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<dd> Log the request and reply messages of exchanges with scheduling
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servers.
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<dt> <time_debug/>
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<dd> Log the passage of time.
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<dt> <http_debug/>
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<dd> Log debugging information about HTTP operations.
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<dt> <net_xfer_debug/>
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<dd> Log debugging information about network communication.
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<dt> <measurement_debug/>
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<dd> Log debugging information host speed, platform, disk space, etc measurements.
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</dl>
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