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The IOAT hardware supports writing a 64-bit pattern to some destination buffer. The same limitations on buffer length apply as for copy operations. Throughput is a bit higher (probably because fill does not have to spend bandwidth reading from a source in memory). Support for testing Block Fill has been added to ioatcontrol(8) and the ioat_test device. ioatcontrol(8) accepts the '-f' flag, which tests Block Fill. (If the flag is omitted, the tool tests copy by default.) The '-V' flag, in conjunction with '-f', verifies that buffers are filled in the expected pattern. Tested on: Broadwell DE (Xeon D-1500) Sponsored by: EMC / Isilon Storage Division |
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| build | ||
| bus_space | ||
| debugscripts | ||
| diag | ||
| ifnet | ||
| kerneldoc | ||
| KSE | ||
| LibraryReport | ||
| regression | ||
| sched | ||
| test | ||
| tools | ||
| install.sh | ||
| make_libdeps.sh | ||
| README | ||
| tinder.sh | ||
$FreeBSD$ This directory tree contains tools used for the maintenance and testing of FreeBSD. There is no toplevel Makefile structure since these tools are not meant to be built as part of the standard system, though there may be individual Makefiles in some of the subdirs. Please read the README files in the subdirs for further information.