By smg on Aug 05, 2009
Could be that some Sun Blackbox containers are destined for Dublin docklands as per the winner of
a recent competition. Wonder if any HPC is needed ?-)
What any 'cloud' based app/service/api will have to be able to beat in terms of self-serviceability
(i.e. upgrading itself), propagation over new compute nodes, speedy integration new features..
All that good stuff.
It'll have to match what the Conflicker virus already can do.
Adding a disk to a linux guest.
Create a 16GB vmdk format sparse disk image:
/usr/lib/xen/bin/vdiskadm create -t vmdk:sparse -s 16g -c "extra disk" /path/to/disk/dir
Attach that new disk image to a guest:
virsh attach-disk virtual-guest /path/to/disk/dir xvdd --driver tap --subdriver vdisk
Note the use of 'xvdd' for the disk name that the linux will see the disk as.
Then one can add the disk to the linux guest's /etc/fstab:
/dev/xvdd1 /export/dsk1 ext3 noauto 0 0
And off one goes
And there are indeed some baby t-shirts too.
One thought seen from the Slashdot posts is a wonder where the AMD64/Opteron/64bit Solaris 10 is. Just like Solaris 9 (on sparc) was/is, the 32bit and 64bit kernels are bundled together in the same release. Downloading the version for x86 will give one the ability to use either the 32bit or 64bit kernels on a AMD64 machine, be it an Athlon64 or Opteron type. All you folks with those Ferrai laptops now have 64bit kernels.
One last item, to actually boot the 64bit kernel on an AMD platform use this command:
# eeprom boot-file=kernel/amd64/unix # reboot
Off to watch some DVDs this evening on the laptop. Using Solaris 10 of course.
One of the entries in this JNLP file is
< j2se version="1.4+" java-vm-args="-esa -Xnoclassgc"/>
Fine, we can control how the JVM is run.
Now getting back to my memory thing. A java app, using a large amount of memory on a machine with a nice bit of memory but that memory can get used up fast once a few java apps get launched. Heres the trick:
< j2se version="1.4+" java-vm-args="-client"/>
It runs the JVM in client mode, thus using less memory. Over half the memory in the case of the java app I was using. Its a nice trick I thought.