Linux test for zero byte file
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Also if you want to specify the group to run as then use the Out someone's system), so if you really want to run as root then use -u root. It is not recommended to use root (since the occasion when a Bonnie++ bug wiped When running as root specify the UID to use for the tests. Tests have been completed, or it is killed. It will dump output continuously in CSV format until either the number of This is useful if you want to perform more than one test. NB If you specify a size of 0 then all checks will be disabled. Need to do this in general use as it should be able to discover the RAM size. If you specify this the other parameters will be checked to ensure they make sense for a machine of that much RAM.
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m name of the machine - for display purposes only. If max is -2 then soft links will be created instead of files. If max is -1 then hard links will be created instead of files. If you specify a number of directories then the files will be evenly distributed amoung If minimum and maximum sizes are specified then everyįile will have a random size from the range min.max inclusive. Max is the maximum size and min is the minimum size (both default to 0 if not specified). To use files of other sizes you can specify number:max:min:num-directories:chunk-size where The default for this test is to test with 0 byte files. If the specified number is 0 then this test will be skipped. This is because no-one will want to test less than 1024 files,Īnd we need the extra space on braille displays. This is measured in multiples of 1024 files. n the number of files for the file creation test. If the specified size is 0 then this test will be skipped. NB You can specify the size in giga-bytes or the chunk-size in kilo-bytes if you add g or The chunk-size is measured in bytes and mustīe a power of two from 256 to 1048576, the default is 8192. This parameter may include the chunk size seperated from the size by a colon. If the size is greater than 1G then multiple files will be used to store the data, andĮach file will be up to 1G in size. s the size of the file(s) for IO performance measures in megabytes. The second is to test creation, reading, and deleting many small files in a fashion similar to the usage patterns of programs such as Squid orĪll the details of the tests performed by Bonnie++ are contained in the file /usr/share/doc/bonnie++/readme.html Optionsįor Bonnie++ every option is of the form of a hyphen followed by a letter and then the next The first is to test the IO throughput in a fashion that is designed to simulate some types of databaseĪpplications. There are two sections to the program's operations. Performance result of 2000 and a CPU result of 90% is better in terms of CPU use than a configuration delivering performance of 1000 and CPU usage of 60%). For performance results higher numbers are better, for CPU usage lower are better (NB a configuration scoring a Bonnie++ tests some of them and for each test gives a result of the amount of work done per second and
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Which different applications use to different degrees. There are a many different types of file system operations
#Linux test for zero byte file manual#
This manual page documents briefly the bonnie++, program.īonnie++ is a program to test hard drives and file systems for performance or the lack therof.