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vxiod [-f ] [set count]
When the vxio module is loaded, 16 I/O threads are created, plus 2 threads per additional CPU for a system with more than 8 CPUs, up to a maximum of 64 threads. At least one I/O thread must be running while the vxio module is loaded, and the number of I/O threads cannot be forced to zero.
When invoked with no arguments, vxiod prints the current number of I/O threads to the standard output.
The number of threads that is required for handling I/O requests depends on the system load and usage. If volume recovery seems to proceed more slowly at times, it may be possible to improve its performance by increasing the number of I/O threads up to a maximum of 64.
Usage errors result in an exit status of 1 and a usage message. If the requested number of threads cannot be created, the exit status is 2, and the number of threads that were successfully started is reported. If any other error occurs, the exit status is 3.
Depending on the operating system, VxVM I/O threads may not appear in the list of processes that is output by the ps command. The number of I/O threads that is currently running can be determined by running vxiod.
Last updated: 2 Feb 2006
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