>Most Linux kernels include the /dev/random device - anyone using it to
>seed an implementation of the JDK's SecureRandom facility? The
>default initialization algorithm used by the JCE is pretty darn
>expensive when we have a pretty good source of bits at hand.
Cryptix is using it --> cryptix.
a SocketBufferBug
monarc01 514
before: sendBufSize=8192
before: recvBufSize=8192
after : sendBufSize=262144
after : recvBufSize=262144
---
Wolfgang Hoschek | e-mail: [EMAIL PROTECTED]
CERN IT Division | phone: +41 (2
Wolfgang Hoschek wrote:
>
> > Here some more results from different VMs, OS, single and dual CPU
> > boxes, with and without SMP kernel:
>
> Correction: WinNT4.0, ibm-1.1.8: OK
Now also tested the just released blackdown-1.3.0rc1
***
* Results *
***
i386_
Ilmars Poikans wrote:
>
> This bug is not present in IBM Java 1.1.8, Sun JDK, only IBM Java 1.3.
>
> It can be reproduced easily:
>
> 1) on build cx130-2815 and previous, basically Java 1.3.
>
> 2) on SMP and non-SMP x86 computers
>
> 3) different operating systems - I tried RedHat Linux,
n here?
No need to hack the jvm. A single malicious piece of user code being
executed is enough.
Wolfgang.
> Wolfgang Hoschek wrote:
> >
> > There is a serious security bug in a major fraction of VMs.
> > Some VMs do not check access specifiers at runtime. This allows you
There is a serious security bug in a major fraction of VMs.
Some VMs do not check access specifiers at runtime. This allows you to
access private data with either a hacked compiler, direct editing of
byte code, or a simple recompile.
For details, see http://metalab.unc.edu/javafaq/
I checked the
Thanks for the hints,
So, I found valuable material from IBM research
(http://www.research.ibm.com/journal/sj39-1.html)
In particular, http://www.research.ibm.com/journal/sj/391/suganuma.html
is very detailed, yet does not mention prefetch issues.
There it says that for IBMJDK1.1.7 Pentium and P
Chris Abbey wrote:
>
> At 17:42 2/1/00 +0100, Wolfgang Hoschek wrote:
> >Does anyone know whether there are any VMs out there that generate CPU
> >specific machine code?
> >Eg. detect a PentiumIII and issue approprate prefetch instructions, etc.
> >If so, is there
Does anyone know whether there are any VMs out there that generate CPU
specific machine code?
Eg. detect a PentiumIII and issue approprate prefetch instructions, etc.
If so, is there material available describing how far such CPU specific
support goes?
Thanks,
Wolfgang.
I am sure this has been raised before, but just in case...
BlackdownJDK1.2.2.RC3 crashes on SMP Kernels, in our case 2.2.5-22smp,
glibc-2.1.1-6, RH 6.0
(Both IBMJDK1.1.8 and SunInproseJDK1.2.2RC1 run fine under SMP and
non-SMP Kernels)
Any chances this will be addressed some time (or has already
> Remote host said: 550 This domain is banned.
No idea what this is. (We're an org with >1000 people, receiving tons of
mail, we're certainly not a phantom). Anyway.
> Ok, i'll try again.
> how do u specifically run the programs?
> gat
That's not a very specific question, maybe being answer
Any other Sun page linking to that page? Couldn't find one.
Wolfgang.
Jacob Nikom wrote:
>
> I was able to get in - it looks like it exists.
>
> Jacob Nikom
>
> Robbie Baldock wrote:
> >
> > Dimitrios Vyzovitis wrote:
> >
> > > Apparently, sun has made an apologetic announcement. Check out:
>
lackdown. Despite the fact that Sun support for the Linux port has been
> minimal for a long time a lot has been achieved. Now you are taking
> advantage without giving them appropriate credits.
>
> This strategy is at le
I've now run the matrix bench over all hot VM's:
BlackdownJDK1.2.2RC3, SunInpriceJDK1.2.2RC1, IBMJDK1.1.8,
BlackdownJDK1.2PreV2, all running RedHat 6.1 on the same machine, a
PentiumIII@600 MHz
Results are here:
http://nicewww.cern.ch/~hoschek/colt/V1.0Beta4/doc/cern/colt/matrix/doc-files/Perform
I just benchmarked RC3 with compute intensive matrix computations and
compared against PreV2. Didn't yet get round to run on IBM.
Both perform well and visibly suffer from the small 256 KB Level-2 Cache
of the PentiumIII (as opposed to the UltraSparcII with 4 MB L2). Most
results show no signific
ains standardized, efficient utility classes
commonly encountered in parallel & concurrent programming.
Finally, the VNI library contains mathematical functions and complex
numbers.
Regards,
Wolfgang Hoschek.
------
Wolfgang Hoschek
IBM is seriously considering porting Visual Age for Java to Linux.
Although it is not explicitly stated whether this would include a VM, we
can probably assume so.
However, their words are cautiously formulated. Before rolling out such
a thing, they want to be told there is a market...
http://www
Maksim Lin wrote:
> I'll second you on the bugs issue and the problem with Suns 1001 API's
> approach. However to be fair you probably picked a bad eg. with
> parametric types as Sun has just put up a proposal for them.
Can anyone please point me to this parametric types proposal? Thanks.
Wolfg
> > Oliver Fels writes:
> > > I dont think so.
> > > According to the last statements from SUN HotSpot will be sold
> > > seperately as a commercial product.
> >
> > Hunh? Can you cite a reference?
> >
> > The announcement (http://www.javasoft.com/pr/1999/04/pr990427-01.html)
> > says: "...
= 43 74 78
>
Does anybody know what is slowing System.arraycopy() on NT so much down?
Has anyone figures from Linux or other environments?
Wolfgang.
--
------
Wolfgang Hoschek | e-mail: [EMAIL PROTECTED]
CERN IT D
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