單項選擇題An AIX system, which is running a database, is having performance issues with I/O writing.  The DBA has provided numbers for the HIGH and LOW watermarks for pending file writes, which will optimize the system for best performance.  To set these numbers, which of the following commands would be used?()

A. perfmon -h 30 -l 25
B. chdev
C. no -o
D. smit chgsys


您可能感興趣的試卷

你可能感興趣的試題

1.單項選擇題In order to ensure best read performance, which of the following indicates how large an application’s read buffer size should be if the filesystem to be read is striped across N disks using LVM striping?()

A. N times the stripe unit size
B. N times the VMM minfree parameter
C. The same value as that of the VMM maxfree parameter
D. The same value as that of  the VMM maxrndwrt parameter

最新試題

Which of the following options would best help to reduce packet fragmentation for a TCP application transferring large amounts of data between servers across a path of multiple networks?()

題型:單項選擇題

If percentage of RAM occupied by file pages falls below minperm, page replacement algorithm steals pages from ()

題型:單項選擇題

In an iostat report, which of the following options best describes the value of % tm_act?()

題型:單項選擇題

To examine the Exhibit, press the Exhibit button. While a user is compiling a C program, "vmstat 120 10" is run to determine the cause of a performance problem.  Using the vmstat output as shown in the exhibit, which of the following conclusions is most appropriate to draw about the I/O bottleneck?()

題型:單項選擇題

An AIX system administrator needs to adjust the maximum amount of memory that can be pinned. Which of the following commands is used to make the change?()

題型:單項選擇題

A TCP/IP application is transferring files from a personal machine to a remote machine.  The application writes 32 kilobytes of data at a time to the socket, but has not issued a system call to set the window size.  Which of the following procedures should be performed on the personal machine to increase the throughput of the application?()

題型:單項選擇題

Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system?()

題型:單項選擇題

Which of the following RAID levels provide the best performance for a system where there are mostly writes occurring?()

題型:單項選擇題

In AIX 5L and later, the operating system supports the /proc filesystem. What would be the best description of the /proc filesystem?()

題型:單項選擇題

Which of the following commands should be used to identify packet sequence problems?()

題型:單項選擇題