My 1.8 (release version) server is experiencing the same issue. The 1.7.10 release ran great but now the same world in 1.8 is unplayable. The server can't keep up and the console is flooded with:
[05:16:19] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 18861ms behind, skipping 377 tick(s)
[05:16:21] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2176ms behind, skipping 43 tick(s)
[05:17:06] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 26332ms behind, skipping 526 tick(s)
[05:17:08] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2384ms behind, skipping 47 tick(s)
[05:18:00] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 32211ms behind, skipping 644 tick(s)
[05:18:02] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2818ms behind, skipping 56 tick(s)
[05:19:08] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 39414ms behind, skipping 788 tick(s)
[05:19:10] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2278ms behind, skipping 45 tick(s)
[05:20:17] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 39530ms behind, skipping 790 tick(s)
[05:20:19] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2267ms behind, skipping 45 tick(s)
[05:21:07] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 29640ms behind, skipping 592 tick(s)
[05:21:09] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2595ms behind, skipping 51 tick(s)
[05:21:54] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 25908ms behind, skipping 518 tick(s)
[05:21:56] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2195ms behind, skipping 43 tick(s)
migrated
My 1.8 (release version) server is experiencing the same issue. The 1.7.10 release ran great but now the same world in 1.8 is unplayable. The server can't keep up and the console is flooded with:
[05:16:19] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 18861ms behind, skipping 377 tick(s)
[05:16:21] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2176ms behind, skipping 43 tick(s)
[05:17:06] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 26332ms behind, skipping 526 tick(s)
[05:17:08] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2384ms behind, skipping 47 tick(s)
[05:18:00] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 32211ms behind, skipping 644 tick(s)
[05:18:02] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2818ms behind, skipping 56 tick(s)
[05:19:08] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 39414ms behind, skipping 788 tick(s)
[05:19:10] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2278ms behind, skipping 45 tick(s)
[05:20:17] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 39530ms behind, skipping 790 tick(s)
[05:20:19] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2267ms behind, skipping 45 tick(s)
[05:21:07] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 29640ms behind, skipping 592 tick(s)
[05:21:09] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2595ms behind, skipping 51 tick(s)
[05:21:54] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 25908ms behind, skipping 518 tick(s)
[05:21:56] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2195ms behind, skipping 43 tick(s)