forked from Lainports/opnsense-ports
8cb1a96ede
Taken from: https://github.com/freebsd/freebsd-ports.git Commit id: 5070672073b68be364139bc6b3a89100bd17d331
10 lines
604 B
Text
10 lines
604 B
Text
This is a program designed initially to speed up writing tapes on remote
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tape drives, but may be used as a general pipe buffering utility.
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Note: You must have SYSVSHM support in FreeBSD kernel.
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The program splits itself into two processes. The first process reads
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(and reblocks) from stdin into a shared memory buffer. The second
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writes from the shared memory buffer to stdout. Doing it this way
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means that the writing side effectly sits in a tight write loop and
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doesn't have to wait for input. Similarly for the input side. It is
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this waiting that slows down other reblocking processes, like dd.
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