From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benno Senoner Date: Thu, 16 Sep 1999 21:03:31 +0000 Subject: latencytests results on a Pentium133, again EXCELLENT, 2.1ms.:-) Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: quoted-printable To: linux-sound@vger.kernel.org Hi, folks, I performed more latency benchmarks on an old Pentium box: P133 , mainboard Tyan Tomcat HX, 64MB RAM, harddisk IBM EIDE 6GB, Soundcard TB Tropez plus, videocard S3 PCI. To my surprise the results were excellent, 2.1ms ! ( 3x128 bytes audio bu= ffer) (even if the jitter is a bit higher than on a PII400 , but anyway very good= !) I lowered the CPU load to 60% since cpuload=80% made the box quite unusable (it's like running on a Pentium with 20-25Mhz :-)) look at the results here: http://www.gardena.net/benno/linux/audio/2.2.10-p133-3x128/3x128.html Seems that Benjamin was right: a P166MMX Laptop can deliver the 3-4ms laten= cy. :-) PS: I noticed that the TB Tropez plus, takes a few msecs to startup, (after the first write() call) therefore just write an empty audio buffer before entering the main loop. regards, Benno. -- Benno Senoner E-Mail: sbenno@gardena.net Linux low latency audio / scheduling latency benchmarks: http://www.gardena.net/benno/linux/audio =20