Thread.dump_to_file time

[Gillespie, Oli]

I don't think the BufferedWriter inside PrintStream (is that the one you meant?) is doing much buffering here. strace says:

write(6, "ThreadDumpPerf.recurse(ThreadDumpPerf.java:20)", 46) = 46
write(6, "\"", 1)           = 1
write(6, ",\n", 2)          = 2
write(6, "              \"", 15) = 15
write(6, "ThreadDumpPerf.recurse(ThreadDumpPerf.java:20)", 46) = 46
write(6, "\"", 1)           = 1
write(6, ",\n", 2)          = 2
write(6, "              \"", 15) = 15

And definitely for me I get a big speedup and reduction in write calls from the 8192 byte buffer I showed.

Oli



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