Date: Sat, 18 Oct 2008 17:28:30 -0700 From: "Len Gross" <sandiegobiker@gmail.com> To: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: Timers in drivers vs userland Message-ID: <27cb3ada0810181728w3f41e3d0pe2fca8102b0c7206@mail.gmail.com> In-Reply-To: <27cb3ada0810181512qeab4020g912096848212ad86@mail.gmail.com> References: <27cb3ada0810181512qeab4020g912096848212ad86@mail.gmail.com>
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Slight correction; I should have said more accurate usleep, not "timer." -- Len On Sat, Oct 18, 2008 at 3:12 PM, Len Gross <sandiegobiker@gmail.com> wrote: > If I place a timer directly in a driver (like Ethernet) will it be > subject to less jitter and more consistency than if it were in > Userland? > > I know FreeBSD is not "real time," but I need to be able to run a > polling algorithm with about 1 ms accuracy. > > Thanks in advance. > > (Please tell me if there is a better list for this question.) > > -- Len >
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