Hi ,

    I have the product running on Linux 6.0 (egcs 2.91.66) . 

	In this product there is necessity to pre-allocate the file used for
storing. This
preallocation is achieved by putting 0 (zero's) in the file till the
desired size of the file . 
The file is then used to store structures(objects or records) . If I
pre-allocate the file the 
application which puts objects in the file becomes slow as compared to
wrting in a non
pre-allocated file. 

	I have attached a tar(compressed test file) that shows this degradation in
performance . 

	The tar file contains c program file create.c which when compiled and run
with 
-i(preallocate) option takes more time than without -i option . I have put
time in the file so just
running runtest script .
	I have a work around that I have done in the testcase file recreate.c .
Instead of
filling the whole file with 0 (zero's) I jump to the desired size of the
file offset and put 0 (zero's).
This shows no degradation. But I was not able to find the reason behind
degradation. 

	Moreover even after this work around the test case takes twice the time it
takes on Solaris or Aix machines .  

Can I have the ext2fs tunning paramaters which will improve the
performance.

	
Thanks ,
Vaibhav Nalawade .