From mboxrd@z Thu Jan 1 00:00:00 1970 From: michi1@michaelblizek.twilightparadox.com (michi1 at michaelblizek.twilightparadox.com) Date: Fri, 11 Apr 2014 18:26:13 +0200 Subject: how tso (tcp segmentation offload) effect TCP bidirectional test sending throughput. In-Reply-To: References: Message-ID: <20140411162613.GA4224@grml> To: kernelnewbies@lists.kernelnewbies.org List-Id: kernelnewbies.lists.kernelnewbies.org Hi! On 15:40 Fri 11 Apr , Varun Sharma wrote: > Hi, > > if we off tso (tcp segmentation offload) on sending side , *TCP > Bidirectional* test sending throughput decrease as compare to *TCP > Unidirectional *test sending throughput . > > whereas if we on tso(tcp segmentation offload) on sending side , both > testgive almost same > sending throughput result. > > is anyone know how tso(tcp segmentation offload) effect TCP Bidirectional > sending throughput ? TSO reduces cpu usage. Your cpu might be a bottleneck with TSO off. -Michi -- programing a layer 3+4 network protocol for mesh networks see http://michaelblizek.twilightparadox.com