Thank you all for your replies
"nagle + delayed ACK problem" : I founded a way to solve this via regedit but no impact on response time THRIFT-638 : It seems to be a solution but i don't know how to patch this on my environement phpcassa has a C extension but it's hard for me to build a php extension I tried to connect with localhost or 127.0.0.1 no change. It's strange beaucause in my memories 1 week ago i had better performances. Accessing a row was 115% time of memcached and now it's a lot more I'll try to reinstall cassandra from scratch... 2011/3/11 Jonathan Ellis <jbel...@gmail.com> > Also: https://issues.apache.org/jira/browse/THRIFT-638 > > On Fri, Mar 11, 2011 at 10:44 AM, Peter Schuller > <peter.schul...@infidyne.com> wrote: > >> There is less than 1000 rows and i've got a 75-100ms to get one row by > id > >> With memcached it's 2ms.... > >> > >> I don't know where is the problem. jvm ? cassandra ? phpcassa ? > >> > >> What can i do to detect where is the problem ? > > > > I'm not familiar with the PHP client, but this sounds suspiciously > > like a nagle + delayed ACK problem. The PHP client probably isn't > > setting the TCP_NODELAY flag (or the equivalent in Windows). > > > > Google for "nagle delayed ack" for details. > > > > -- > > / Peter Schuller > > > > > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of DataStax, the source for professional Cassandra support > http://www.datastax.com >
