However, I needed more virtual machines to look at potential client configurations than I could easily fit on a Macbook Pro, even the very well endowed Macbook Pro that I own (which has 8 gigabytes of memory), so clearly I needed to throw more hardware at the problem (heh! Typical software engineer answer!). So I installed 10.04 on a well-endowed desktop/server system complete with RAID5 array and 8GB of RAM, and set out to configure clients using the KVM (Kernel Virtual Machine) system that comes with Ubuntu 10.04.
So, the Good:
- KVM rocks. The performance I get out of KVM is far superior to anything I've ever experienced with VMware even on faster hardware. I am currently running a load on my system that would have both cores maxed out under VMware due to VMware's per-VM overhead. Under KVM, I'm at around 30% on both cores.
- The Virtual Machine Manager that ships with Ubuntu for managing KVM is far easier to use than the latest editions of VMware Server's management UI, but not as good as the VMware Fusion management UI on MacOS in that it doesn't have any equivalent, as far as I can tell, of the VMware Tools module that allows transparent window pointer moves between the KVM virtual screen window and the host OS screen.
- Gibber is a really cool Twitter/Facebook/etc. client, easily as good as anything on MacOS. I especially like its multi-pane capabilities for viewing multiple streams in parallel.
- Performance in general rocks. It feels snappy and things happen quickly, even though it's running software RAID5 so you'd expect significant overhead from the disk driver. But there isn't -- Linux's cache-block elevator does very well at optimizing RAID access.
- The user interface in general is reminiscent of mid-1990's Windows. It looks and feels dated and obsolete, and lacks many of the modern navigational aids of Windows 7 or MacOS 10.5.
- While I got multi-screen support working for two displays attached to my nVidia 7900 video card (which has two outputs), the dated UI gives no easy way to navigate between the various applications open on the two screens. The window boxes clustered at the bottom of the leftmost screen are not easily accessible from the rightmost screen, and there's no equivalent of Apple's Expose' or Windows 7's similar application-picker function that can be bound to a mouse button so selecting an application is a mouse button away.
- Neither the KDE nor Gnome filesystem browser allowed providing a user name/password to a CIFS server whose shares you wished to list. As a result, I could not use the CIFS browser to browse to shares on my Mac or on our Windows servers here on the office, neither of which will provide you with a share list unless you authenticate first. On the Mac, this Just Works -- the initial attempt to get the share list fails, but then you click the "Connect As" button, put in the user name and password, voila.
- In general, integration with Apple and Windows networks was pathetic. I was reduced to doing manual mounts via the CLI mount.cifs command, which I should never have to do on a supposedly modern desktop operating system.
- KDE on Ubuntu 10.04 is atrocious. There is an important directory service under KDE that sucks up gigabytes of RAM. I had to switch back to the unsatisfactory, but at least functional and efficient, Gnome UI to get work done. KDE used to be fast and clean, but it has become as bloated and dysfunctional as Windows.
- Multi-screen support on 10.04 has taken several steps backwards. Window managers crashed when I used the standard X11 Xinerama extension. So I used the proprietary TwinView nVidia driver for my nVidia 7900 video card (a high end card from two generations back, somewhat obsolete today but I use it for Linux because its support is mature) and now multi-screen support is back... but only for the displays attached to this single video card.
I can appreciate the effort that has been put into Ubuntu 10.04, and the difficulties involved in trying to turn a mass of random software from miscellaneous strangers into a coherent operating environment. But that does not change the fact that Linux on the desktop remains stuck in a time warp, fighting the battles of two decades previous in an era where time has moved on. It is especially sad that KDE today is no more usable than KDE 2.0 was ten years ago -- indeed, is *less* usable because of the bloat that has been put on top of what was a clean fast simple and well-integrated user interface. KDE has become a 1959 Cadillac, with fins the size of a aircraft tailfin and a thousand pounds of chrome weighting it down as it staggers down the highway like a bloated whale. Windows 7 suffers from some similar user interface bloat, but it has an excuse -- it's Windows. KDE has no such excuse.
So for the meantime, here's what I say: If you want a coherent, usable user environment, buy a Mac. If you want a fast server environment, use Linux. And if you want something that's neither as coherent as a Mac or as good as a server as Linux, then run Windows 7, which gives you a mediocre implementation of both worlds. As for me, I'm going to stick with my Mac on the desktop, and continue using Linux on my server. That gives me the best user environment *AND* the best server environment... but not, alas, in the same box. So it goes.