Postmark: A new file system benchmark


 
Postmark description
Results



Postmark description
The full Postmark specification can be obtained from Network Appliance, Inc. Web server. Also is available compiled OS-9 version (including sources), which you can download from this site.

PostMark was designed to create a large pool of continually changing files and to measure the transaction rates for a workload approximating a large Internet electronic mail server.

PostMark generates an initial pool of random text files ranging in size from a configurable low bound to a configurable high bound. This file pool is of configurable size and can be located on any accessible file system.

Once the pool has been created (also producing statistics on continuous small file creation performance), a specified number of transactions occurs. Each transaction consists of a pair of smaller transactions:
  • Create file or Delete file
  • Read file or Append file
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Results
Tests were performed with the following values as default:
  • number of simultaneous files - 50
  • number of transactions - 100
Location System Total time used,secs Time of transactions,secs Data read,Kb Read speed,kB/secs Data written,kB Write speed,kB/secs
Local disk OS-9/68k v2.4 164 101 266.31 1.62 648.60 3.95
Samba volume Windows NT 4.0/SP3 124 73 266.31 2.15 648.60 5.23
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