Hi, Ok so you mean that in 1.7, even with a write quorum set to 1, the replication is somehow synchronous ?
Le jeudi 18 décembre 2014 19:19:17 UTC+1, Lvc@ a écrit : > > Hi Stéphane, > To improve the writes you should use sharding, no replication: in fact, > the more nodes you have, the more replicas OrientDB has to manage. With > replicas of your database you improve reads. > > In 2.0 we introduced the new "asynchronous" mode to go much faster on > writes too. > > Lvc@ > > > On 18 December 2014 at 12:51, Stéphane Schild <[email protected] > <javascript:>> wrote: >> >> Hi, >> >> I have done some tests in a lab on write scalability in distributed mode. >> >> My lab consists of two Win7 machines (also tried on Linux with the same >> results) linked by Ethernet network, that are in the same OrientDB cluster. >> I have left the default configuration, except the write quorum that has >> been set to 1 to see if it improved the results. >> >> The object are created using the Java Graph API. >> >> Test 1 (1 client, 1 node): >> 10'000 vertices created. >> Time: 00m50s >> >> Test 2 (2 clients, 1 node): >> 20'000 vertices (10'000 per client) created. >> Time: 01m00s >> >> Test 3 (4 clients, 2 nodes): >> 40'000 vertices (10'000 per client, 2 clients connected on node1, 2 >> clients connected on node2) created. >> Time: 01m55s >> >> I have two surprises: >> - Test1 and Test2 take approx the same time to run, which was not expected >> - Test3 takes twice the time as Test2, which was not expected either. I >> thought that adding a node would increase the global performance by almost >> a factor of 2. >> >> Could you guide me if I'm doing something wrong ? How do you explain my >> results ? >> >> Thanks >> >> -- >> >> --- >> You received this message because you are subscribed to the Google Groups >> "OrientDB" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > -- --- You received this message because you are subscribed to the Google Groups "OrientDB" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
