~xnox/flashbench/master : changes

~xnox/flashbench/master » Changes from revision 62

From Revision 54 to 35

Rev	Summary	Authors	Date
54	flashbench: use lower number of samples in -a test flashbench: use lower number of samples in -a test Turns out a bit too much, and might hide some effects. Also, using something just below a power of two works better, so use 7 now. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
53	flashbench: fix time_to_ns for 32 bit systems flashbench: fix time_to_ns for 32 bit systems Incorrect type conversion results in potentially negative time values. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
52	flashbench: fix FAT benchmark flashbench: fix FAT benchmark Random needs to be applied to blocks in the segment, not the order of blocks. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
51	flashbench: extend README flashbench: extend README This adds an explanation about how to find the number of open segments/eraseblocks. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
50	flashbench: add README file flashbench: add README file This adds a little introductory file describing how to use flashbench. Needs more text still. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
49	Revert "flashbench: remove alignment tests" Revert "flashbench: remove alignment tests" This reverts commit eefa89baa9800a3904d4ada44a61132f299a6633. Actually, I still want this back. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
48	flashbench: move nr-of-aus-detection into its own function flashbench: move nr-of-aus-detection into its own function With this change, the program basically gets usable from the command line. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
47	flashbench: allow finding the FAT using CLI flashbench: allow finding the FAT using CLI Recompiling flashbench every time to run it with different arguments sucks, so allow the find-fat test to be run from the command line, with all necessary args for tuning. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
46	flashbench: remove alignment tests flashbench: remove alignment tests These turned out to be pretty useless, so I'll just remove them. If someone wants them back, they are still in the git history and we can write them in using our program language. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
45	flashbench: allow passing an erase block size flashbench: allow passing an erase block size This is currently unused, but will be used to simplify running the programmed tests. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
44	flashbench: make -verbose switch work with vm.c flashbench: make -verbose switch work with vm.c This has been annoying me for far too long, time to fix it. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
43	flashbench: fix erase usage printf flashbench: fix erase usage printf obvious typo fix Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
42	flashbench: print scatter test results in ms & MB flashbench: print scatter test results in ms & MB Bytes and nanoseconds are relatively impractical, so print them in units that are easier to process with gnuplot. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
41	flashbench: fix random generator to also include 0 flashbench: fix random generator to also include 0 The linear feedback shift register used to create pseudorandom numbers cycles through all possible values, but not zero. Add a special case for this. The result is that zero is always the last number. This guarantees that any sequence can not be sorted, even for very small sets. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
40	flashbench: add an erase tool flashbench: add an erase tool This trivial tool can be used to erase block devices using the BLKDISCARD ioctl. The tool does nothing but calling that ioctl with the command line arguments. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
39	flashbench: fix building on 32 bits flashbench: fix building on 32 bits This fixes all warnings and one confusion of off_t and size_t Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
38	flashbench: change some parameters for current test flashbench: change some parameters for current test Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
37	flashbench: implement erase operation using BLKDISCARD flashbench: implement erase operation using BLKDISCARD Erasing blocks has a huge impact on timing, we need to test this. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
36	flashbench: print MB/s in 1000 not 1024 units flashbench: print MB/s in 1000 not 1024 units This fixes inconsistencies in the output. Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago
35	flashbench: add test for number of open AUs flashbench: add test for number of open AUs The new test case writes data to random positions in a varying number of AUs, using varying block sizes. Example output: 1 AU 2 AU 3 AU 4 AU 5 AU 8 AU 4MiB 8.98M/s 8.99M/s 9.01M/s 9M/s 8.99M/s 9M/s 2MiB 9.09M/s 6.88M/s 7.55M/s 6.85M/s 4.84M/s 4.84M/s 1MiB 7.59M/s 7.47M/s 3.81M/s 2.59M/s 2.55M/s 2.55M/s 512KiB 8.42M/s 7.54M/s 1.82M/s 1.69M/s 1.35M/s 1.31M/s 256KiB 9.01M/s 8.18M/s 1.22M/s 778K/s 681K/s 681K/s 128KiB 7.79M/s 7.27M/s 1.02e+0 816K/s 358K/s 340K/s 64KiB 12.1M/s 11.2M/s 4.7M/s 4.19M/s 336K/s 173K/s Signed-off-by: Arnd Bergmann <arnd@arndb.de>	Arnd Bergmann	13 years ago

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