On Apr 20, 2014, at 21:17 , Lukas Tribus wrote: >> Hi >> >> I was watching this video by fastly ceo http://youtu.be/zrSvoQz1GOs?t=24m44s >> he talks about the nginx ssl handshake versus apache and comes to the >> conclusion that apache was more efficient at mass handshakes due to >> nginx blocking while it calls back to openssl >> >> I was hoping to get other people's opinion on this and find out if what >> he says is accurate or not > > I would be interested in opinions/statements about this as well.
nginx worker blocks on SSL handshake as well as on disk I/O. But in contrast to the disk I/O during the handshake you can not do anything else on this CPU at this time until CPU time share slice will end for the current process/thread. If a typical time share slice is 1ms and the 1024-bit key handshake time is 0.5ms then the chances that another process/thread is able to run on the same CPU are 25%. The lesser handshake time the lesser chances. -- Igor Sysoev http://nginx.com _______________________________________________ nginx mailing list [email protected] http://mailman.nginx.org/mailman/listinfo/nginx
