Is i686 the minimum required for HotSpot on x86?
erik.trimble at oracle.com
Tue Mar 29 18:15:56 PDT 2011
On 3/29/2011 4:00 PM, Dr Andrew John Hughes wrote:
> On 08:23 Tue 29 Mar , Vladimir Kozlov wrote:
>> It would be nice to have call stack trace. I looked on attached hs_er* files and non of them has it. JIT (Client VM)
>> should not emit cmov instruction if it is not supported. Also there was suggestion in the report about running with
>> -Xint, did it help? I surprise someone still try to run Hotspot on i586 ;) I can't even find P4 around here. And we
>> definitely do not test on such machine (i586) so it is not supported.
> I've prompted on the bug about the -Xint check. It sounds like twisti has found the issue anyway.
> I don't even have an x86 box I'd want to try compiling OpenJDK on. The only x86 box I still have is a 233MHz one
> I use for basic stuff like DNS, proxy, etc. and even that's i686. Presumably, someone else thought of this and
> that's why there's the switch twisti mentioned that allows you to only use certain instructions :-)
Actually, that brings up a good point. I can't think of any current x86
CPU that isn't a superset of i686.
Are there any such beasts? I ask, simply because at some point, we
(i.e. the community, not Oracle) should probably be making some
statement/decision about minimum supported configuration.
Java System Support
Santa Clara, CA
More information about the hotspot-dev