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Bug Database
Bug ID: 4064240
Votes 0
Synopsis File I/O Dog Slow
Category java:jit_symantec
Reported Against 1.1.3
Release Fixed
State 11-Closed, Not Reproducible, bug
Priority: 1-Very High
Related Bugs 4137835
Submit Date 11-JUL-1997
Description




I don't know what you did in the Java Performance
Pack for Windows (JPP113.exe) but File/Disk IO
is now really slow. Operations that took about
1 sec now take 5-6 secs to complete.
Other than that, it looks  customer . Looking
forward for the next release.



======================================================================


  xxxxx@xxxxx   1997-07-25
[more information from user]

------

Hi,

Well, the problem showed up mostly on a slower NT server machine
running JDK 1.1.3 and the JPP. I used RandomAccessFiles
and had many seeks, reads and writes (between two files).

I tried to put together a test program for you to show
the problem but I can no longer reproduce it. This is really strange
as I had no problems a week ago (the code in that part of the program 
hasn't changed). I'm at a loss of what happened other than I guess I 
cried 'Wolf' before I should have. I'm sorry for wasting your time. 
I'll make sure to poke into a problem a bit more next time something
like this comes up before informing you guys.

Again, sorry for wasting your time, and thanks for looking into
this (non-existing) bug.

Darcy


> Our engineer has evaluated the bug you reported.  They found that with
> JCK java.io test suite, non-jit version took 56 minutes, and jit version
> took 32 minutes (using released 1.1.3 and released jit).
> 
> Is there any additional information you can provide that will assist
> our engineers in recreating the problem you have reported?
> 
> thank you,
> Roger
> JavaSoft
> 
-----------------------------------------------------
Work Around





======================================================================
Evaluation
I didn't reproduce.  With JCK java.io test suite, non-jit version 
took 56 minutes, and jit version took 32 minutes (using released
1.1.3 and released jit).  We need more info.

  xxxxx@xxxxx   1997-07-24

Closed: Original filer could not reproduce
(See amended description).

  xxxxx@xxxxx   1997-11-14
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