That's the only thing stopping me from running OpenBSD 24/7/365 on my workstation. It's getting marginally better with each release, but even on a system that screams under any other OS, OpenBSD just lags and lags, even with tweaks.
I've found a great use case for it though; older, slower hardware (think P4 and older) actually benefits from running OpenBSD versus most modern Linux distros. For example, I have an ancient PIII laptop that refuses to run anything other than OpenBSD, Slackware, and Haiku OS. Out of those, OpenBSD is the fastest and least buggy. Granted, it's just a toy/hobby device, but I found it intriguing nonetheless.
Could you be more specific on what problems you have?
Usually OpenBSD has been running quite smoothly.
Only issues I've experienced have been on video use. Like I haven't been able to get smooth playback of HD material. And firefox seems to be bit choppy but that is probably my "gazillion tabs" I keep open.
Those are some of the issues I've experienced, even with SD video and only a few tabs open in Firefox.
There's also a general choppiness to X itself. All of this with accelerated Intel graphics, so it's not necessarily driver related. I just figure that given the project's focus on security and clean code, desktop OS performance takes a necessary back seat.
Even with all of that, I give every new release a thorough test run on my old workstation and laptop, just to see if things have improved in that area. And they have been steadily improving!
When did you try it? They fixed ACPI power management issue in 5.8. So if you tried it before that it might explain the battery life issue.
I haven't seen any multiple-second system freezes ever. Did you report those issues in bug tracker or mailing lists?
The above ~5yr old laptop will give 60fps running minecraft with no hiccups / glitches. Installed an SSD and frankly its a perfect workstation for anything I would use and I see no lag.
It shouldn't be power-hungry... A lot of OpenBSD developers use OpenBSD on their ThinkPads. It should work fine. Maybe you haven't configured power management.
You're telling me what it shouldn't be or should be, but I am telling you what it is.
You are free to search marc.info for the fruitless threads of me trying to solve multi-second system freezes when opening emacs or changing workspaces if you like.
The fact that the devs dogfood their stuff is irrelevant: it doesn't perform even remotely as well as Linux on the same (modern) hardware.
In OpenBSD you can let the kernel do the power management with "sysctl hw.perfpolicy=auto".
Also there was fix in ACPI in 5.8 to fix power use in newer processors. If I remember it correctly the processor didn't use the deep sleep states so they consumed more power.
I've found a great use case for it though; older, slower hardware (think P4 and older) actually benefits from running OpenBSD versus most modern Linux distros. For example, I have an ancient PIII laptop that refuses to run anything other than OpenBSD, Slackware, and Haiku OS. Out of those, OpenBSD is the fastest and least buggy. Granted, it's just a toy/hobby device, but I found it intriguing nonetheless.