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Special Forums Hardware Filesystems, Disks and Memory data from blktrace: read speed V.S. write speed Post 302365199 by achenle on Monday 26th of October 2009 09:42:31 AM
Old 10-26-2009
The write operations are almost certainly getting cached somewhere, most likely in the kernel page cache or the cache on the disk(s) themselves depending on your OS and hardware setup.
 

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show cached clearinghouse(1m)											     show cached clearinghouse(1m)

NAME
show cached clearinghouse - Displays current information about the specified cached clearinghouse SYNOPSIS
cdscp show cached clearinghouse clearinghouse-name ARGUMENT
A specific clearinghouse name. The name can contain wildcard characters. DESCRIPTION
The show cached clearinghouse command displays all the names and values of the attributes in the specified cached clearinghouse. The fol- lowing are valid attributes: Specifies the time at which this clearinghouse was added to the cache Specifies the number of operations other than read and write (that is, skulks, new epochs, and so on) performed by this clerk on the cached clearinghouse Specifies the number of lookup operations of any sort performed by the clerk on the cached clearinghouse Specifies the protocol sequence and Internet address of the server that maintains the cached clearinghouse Specifies the number of write operations performed by this clerk on the cached clearing- house Privilege Required You must have read permission to the clerk. NOTE
This command is replaced at Revision 1.1 by the dcecp command and may not be provided in future releases of DCE. EXAMPLE
The following command displays all attributes of the cached clearinghouse /.:/Paris2_CH. cdscp> show cached clearinghouse /.:/Paris2_CH SHOW CACHED CLEARINGHOUSE /.../abc.com/Paris2_CH AT 1991-10-15-15:58:09 Creation Time = 1991-10-01-17:03:32.32 Read Operations = 412 Write Operations = 618 Miscellaneous Operations = 278 RELATED INFORMATION
Commands: list clearinghouse(1m) show cached clearinghouse(1m)
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