A bit more success...
I went into the Services under the Admin menu and turned off:
Actions scheduler (anacron)
Actions scheduler (atd)
Audio settings management (alsa-utils) - I think this one had been off
Bluetooth device management (bluetooth)
Computer activity logger (klogd)
Computer activity logger (sysklogd)
Power management (acpid)
Power management (apmd)
Printer service (cupsys)
I then restarted, though I'm not sure if it was necessary. My worst times
have dropped from the 33.5k range down to so far a max of 24.4.
Am I getting close to a useful value yet?
-Gary
On Sat, Oct 4, 2008 at 5:31 PM, Gary Fixler <[EMAIL PROTECTED]> wrote:
> Hi John,
>
> I've had several suggestions (one off-list) to drop the nvidia driver
> entirely, and it's working. My test steps have been to pop open Firefox,
> send it to the Fantastic Contraption game (Flash, and heavy, but fun),
> wiggle windows a bit, then open glxgears, wiggle it about, surf for a few
> minutes, then maximize glxgears and minimize again.
>
> With the nvidia driver glxgears was pretty fast, latencies were in the high
> 400k, once even up around 520k (ns). I've since tried the nv driver, and
> glxgears is far slower, chugging away, and taking many seconds to maximize,
> but the jitter topped off a little over 160k. I'm now trying the vesa
> driver, and my worst after all of that is 33.5k. MUCH better, by an order of
> magnitude from my first results. I hear that's still not great, but I'm sure
> there's still more I can try, like disabling things.
>
> Any suggestions for what I can turn off to squeeze more k's off my max
> numbers? I'm sure I'll have to research how to turn each off :)
>
> Thanks!
> -g
>
> I had a few suggestions in
>
> On Sat, Oct 4, 2008 at 8:04 AM, John Kasunich <[EMAIL PROTECTED]>wrote:
>
>> Gary Fixler wrote:
>> > I tried to send a message last night, but it never showed up on the
>> list. I
>> > have the worst time getting messages through.
>> >
>> > Basically, I'm on an aging Shuttle PC from 2002 with an Nvidia GeForce4
>> Ti
>> > 4600. When I start up latency-test, I'm in the single-digit thousands,
>> like
>> > 6500 or so. If I play around online with Flash things (e.g. the
>> Fantastic
>> > Contraption game) it jumps to about 35k(ns) for the base thread jitter.
>> If I
>> > open glxgears it usually bumps up to 150k+, and if I maximize it, it
>> soars
>> > to well over 350k, sometimes almost 400k. The machine does feel laggy -
>> slow
>> > window redraws when dragging windows - but I'm also used to a much
>> faster
>> > machine now.
>>
>> Severe latency problems when running GLXgears almost always points
>> towards hardware graphics acceleration. Usually the video board
>> manufacturer has a proprietary driver which either disables interrupts
>> for long periods, or does bus mastering DMA, or something else that
>> interferes with the computer doing realtime code.
>>
>> There are two solutions to that:
>>
>> 1) use an open-source driver, such as the generic vesa driver, which
>> doesn't use hardware acceleration. Graphics will be slower, but
>> realtime performance will improve
>>
>> 2) switch to a different, perhaps older, graphics card Many people have
>> had success with various Matrox cards
>>
>> Regards,
>>
>> John Kasunich
>>
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