Get an real-time kernel if possible. Tune your system:
check here for a test script: https://realtimeconfigquickscan.googlecode.com/hg/ When I need full power I use this script: (I think you have to install some package for this, I dont use ubuntu) #!/bin/bash /sbin/sysctl -w vm.swappiness=10 tuned-adm profile latency-performance Also you have to create a 'audio' group, add yourself to this group and edit etc/security/limits like this: (it seems that ubuntu changed this path for some strange reason, you have to check it) @audio soft cpu unlimited @audio - rtprio 100 @audio - memlock unlimited @audio - nice -20 2010/9/17 Pedro Lopes <[email protected]>: > Linux-wise, quick pointers: > - rt-kernel > - jack realtime enabled (try lowering latency by manipulating audio buffer > size and period) > - pd (startup flags -rt -jack) > [you should configure jack to run realtime, add audio user to the > limits.conf, etc.. etc... see the web or UbuntuStudio low latency tutorial, > nice reading] > I use H4 audio sound card, native USB audio driver recognized in Linux > (Ubuntu 9.10 rt) and have really low latency. > > On Fri, Sep 17, 2010 at 3:58 PM, Ed Kelly <[email protected]> wrote: >> >> Hi List, >> >> What is the best recipe for low latency, using a laptop with no ieee1394 >> (firewire) and only USB under Windows or Linux? >> Metastudio 4 for Pure Data - coming soon!! >> >> >> >> >> >> _______________________________________________ >> [email protected] mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list > > > > -- > Pedro Lopes (ongoing MSc) > contact: [email protected] > website: http://web.ist.utl.pt/Pedro.Lopes > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
