Specific support exists for disk, fifo, pipe, tape, and terminals. Support for "ptys" may be added in the future as well. During failures, the history is dumped, which can be helpful when troubleshooting failures.
This option controls the bytes incremented when testing variable length records. The default direction is forward. The copy option was added to do a byte for byte copy between devices, while skipping bad blocks and keeping file offsets on both disks in sync. I've used this option to mostly recover my system disk which developed bad blocks which could not be re-assigned. A verify operation automatically occurs after the copy, which is real handy for unreliable diskettes.
This option is used to specify the IOT pass number. When multiple passes occur, dt factors in the pass count to generate unique data during each pass. For example, the IOT seed is normally 0x, and will be multiplied by the pass specified, useful for re-reading previously written IOT data patterns.
This option is used to specify the last IOT pattern seed dt used. When multiple passes occur, dt now factors in the pass count to generate unique data during each pass. For example, the IOT seed is normally 0x, but this is now multiplied by the pass count for uniqueness. The seeks are limited to the data limited specified or calculated from other options on the dt command line. If data limits are not specified, seeks are limited to the size of existing files, or to the entire media for disk devices calculated automatically by dt.
This option sets the starting logical block address used with the " lbdata " option. This option sets the starting logical block size used with the lbdata option. This option is used on Tru64 Cluster systems to specify various distributed lock manager DLM options with devices or files.
These options are used to specify various POSIX compliant open flags, and system specific flags, to test the affect of these open modes. This option allows you to control the action taken by dt when a child process exits with an error. By default, the action is continue , which allows all child processes to run to completion.
If the child error action is set to abort , then dt aborts all child processes if any child process exits with an error status. This is especially useful during controller failover type testing. This option allows you to specify a time in seconds when to initiate the no-progress time trigger script.
This option allows you to disable timing of certain operations system calls , when the no-progress options is enabled. Valid optype's are: open close read write ioctl fsync msync aiowait.
This option specifies a 32 bit hexadecimal data pattern to be used for the data pattern. The default data patterns are:. This option allows the user to define a free format prefix string which is written at the beginning of each block. It is used to generate uniqueness useful when data corruption occur. Certain format control strings are interpreted as shown below.
This option specifies the number of processes to initiate performing the same test. This option is currently only implemented on HP-UX. It allow you to set the queue depth of the device under test, overriding its' default.
Note: The settings is sticky retained. This option is independent of the data limit option. This option controls how long the total test should run. When used in conjunction with a data limit or record limit, multiple passes will be performed until the runtime limit expires. A later section entitled " Time Input Parameters ", describes the shorthand notation for time values.
This option controls the number of seconds to delay between reads performed after a data corruption. This option is used with random access devices. Since dt does the calculations, this simplifies simultaneous testing from multiple hosts to shared storage usually a multi-initiator test requrement. This option divides the media into slices.
Each slice contains a different range of blocks to operate on in a separate process. It supports foreign keys for generating consistent data across more than one level. Informatica Test Data management is of the best test data generation tool that automated data connectivity and test data-generation capabilities. It ensures clean, consistent data files for field testing and regulatory reporting. IBM InfoSphere Optim is a test data creating an application that increases performance, empower collaboration across applications and databases across platforms.
CA Test Data Manager is a tool for generating test data. You can use it to store, manage, find, edit, mask, and subset data. It enables you to centrally store data as a reusable asset. It can extract specific transactional sets of business objects required for particular tests. It Increases efficiency by reducing the time required to manage data in development and test systems. DTM data generator application allows users to create a data generation project by a few clicks.
It analyzes the target database structure before each execution in order to prevent the populating of the changing tables. This feature displays all execution time of every functions at once; so you can increase the efficiency dramatically. It is effective to find an un-executed process and to check software behavior when you verify a bug.
This function visually display the task transition, the status transition and the sequence transition. Additionally, it show you the occupation rate and the occupation time. Download Microsoft Edge More info.
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