server using up all memory in 90 min Help :(

so recently I have been working on the new public mindcrack server.

we are only working with the first of a few boxes atm each box with decent specs. and soon to be interlinked.

however the server is running with around 300 players and has some very large memory leak and that is causing the server to reboot every 90 minutes. causing some rollback to player no more than 5 min due to the auto save.


clearly a good place to start would be to stop the java errors that are popping up in console. Note this is not during the crash its self but every now and then during the 90 min. this is a set of 3 errors that happen in this order each time.

Code:

2012-04-19 00:21:15 [SEVERE] java.net.UnknownHostException: session.minecraft.net
2012-04-19 00:21:15 [SEVERE]     at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:175)
2012-04-19 00:21:15 [SEVERE]     at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
2012-04-19 00:21:15 [SEVERE]     at java.net.Socket.connect(Socket.java:546)
2012-04-19 00:21:15 [SEVERE]     at java.net.Socket.connect(Socket.java:495)
2012-04-19 00:21:15 [SEVERE]     at sun.net.NetworkClient.doConnect(NetworkClient.java:178)
2012-04-19 00:21:15 [SEVERE]     at sun.net.www.http.HttpClient.openServer(HttpClient.java:409)
2012-04-19 00:21:15 [SEVERE]     at sun.net.www.http.HttpClient.openServer(HttpClient.java:530)
2012-04-19 00:21:15 [SEVERE]     at sun.net.www.http.HttpClient.<init>(HttpClient.java:240)
2012-04-19 00:21:15 [SEVERE]     at sun.net.www.http.HttpClient.New(HttpClient.java:321)
2012-04-19 00:21:15 [SEVERE]     at sun.net.www.http.HttpClient.New(HttpClient.java:338)
2012-04-19 00:21:15 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:935)
2012-04-19 00:21:15 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:876)
2012-04-19 00:21:15 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:801)
2012-04-19 00:21:15 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1139)
2012-04-19 00:21:15 [SEVERE]     at java.net.URL.openStream(URL.java:1029)
2012-04-19 00:21:15 [SEVERE]     at net.minecraft.server.ThreadLoginVerifier.run(ThreadLoginVerifier.java:34)


2012-04-19 00:21:26 [INFO] Fetching addPacket for removed entity: CraftItem


2012-04-19 00:24:23 [INFO] Disconnecting Edwan98 [/194.22.5.12:45747]: Failed to verify username! [internal error java.net.UnknownHostException: session.minecraft.net]
2012-04-19 00:24:23 [SEVERE] java.net.UnknownHostException: session.minecraft.net
2012-04-19 00:24:23 [SEVERE]     at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:175)
2012-04-19 00:24:23 [SEVERE]     at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
2012-04-19 00:24:23 [SEVERE]     at java.net.Socket.connect(Socket.java:546)
2012-04-19 00:24:23 [SEVERE]     at java.net.Socket.connect(Socket.java:495)
2012-04-19 00:24:23 [SEVERE]     at sun.net.NetworkClient.doConnect(NetworkClient.java:178)
2012-04-19 00:24:23 [SEVERE]     at sun.net.www.http.HttpClient.openServer(HttpClient.java:409)
2012-04-19 00:24:23 [SEVERE]     at sun.net.www.http.HttpClient.openServer(HttpClient.java:530)
2012-04-19 00:24:23 [SEVERE]     at sun.net.www.http.HttpClient.<init>(HttpClient.java:240)
2012-04-19 00:24:23 [SEVERE]     at sun.net.www.http.HttpClient.New(HttpClient.java:321)
2012-04-19 00:24:23 [SEVERE]     at sun.net.www.http.HttpClient.New(HttpClient.java:338)
2012-04-19 00:24:23 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:935)
2012-04-19 00:24:23 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:876)
2012-04-19 00:24:23 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:801)
2012-04-19 00:24:23 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1139)
2012-04-19 00:24:23 [SEVERE]     at java.net.URL.openStream(URL.java:1029)
2012-04-19 00:24:23 [SEVERE]     at net.minecraft.server.ThreadLoginVerifier.run(ThreadLoginVerifier.java:34)

2012-04-19 00:24:25 [INFO] Disconnecting taylorborn [/76.70.67.30:60554]: Failed to verify username! [internal error java.net.UnknownHostException: session.minecraft.net]
2012-04-19 00:24:25 [SEVERE] java.net.UnknownHostException: session.minecraft.net
2012-04-19 00:24:25 [SEVERE]     at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:175)
2012-04-19 00:24:25 [SEVERE]     at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
2012-04-19 00:24:25 [SEVERE]     at java.net.Socket.connect(Socket.java:546)
2012-04-19 00:24:25 [SEVERE]     at java.net.Socket.connect(Socket.java:495)
2012-04-19 00:24:25 [SEVERE]     at sun.net.NetworkClient.doConnect(NetworkClient.java:178)
2012-04-19 00:24:25 [SEVERE]     at sun.net.www.http.HttpClient.openServer(HttpClient.java:409)
2012-04-19 00:24:25 [SEVERE]     at sun.net.www.http.HttpClient.openServer(HttpClient.java:530)
2012-04-19 00:24:25 [SEVERE]     at sun.net.www.http.HttpClient.<init>(HttpClient.java:240)
2012-04-19 00:24:25 [SEVERE]     at sun.net.www.http.HttpClient.New(HttpClient.java:321)
2012-04-19 00:24:25 [SEVERE]     at sun.net.www.http.HttpClient.New(HttpClient.java:338)
2012-04-19 00:24:25 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:935)
2012-04-19 00:24:25 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:876)
2012-04-19 00:24:25 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:801)
2012-04-19 00:24:25 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1139)
2012-04-19 00:24:25 [SEVERE]     at java.net.URL.openStream(URL.java:1029)
2012-04-19 00:24:25 [SEVERE]     at net.minecraft.server.ThreadLoginVerifier.run(ThreadLoginVerifier.java:34)
2012-04-19 00:24:25 [INFO] [ChestShop] Cushionhead bought 32 SANDSTONE for 16.0 from Admin Shop at [world] 149, 65, 365
2012-04-19 00:24:26 [INFO] Disconnecting Brutonian [/62.107.245.160:58365]: Failed to verify username! [internal error java.net.UnknownHostException: session.minecraft.net]
2012-04-19 00:24:26 [SEVERE] java.net.UnknownHostException: session.minecraft.net
2012-04-19 00:24:26 [SEVERE]     at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:175)
2012-04-19 00:24:26 [SEVERE]     at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
2012-04-19 00:24:26 [SEVERE]     at java.net.Socket.connect(Socket.java:546)
2012-04-19 00:24:26 [SEVERE]     at java.net.Socket.connect(Socket.java:495)
2012-04-19 00:24:26 [SEVERE]     at sun.net.NetworkClient.doConnect(NetworkClient.java:178)
2012-04-19 00:24:26 [SEVERE]     at sun.net.www.http.HttpClient.openServer(HttpClient.java:409)
2012-04-19 00:24:26 [SEVERE]     at sun.net.www.http.HttpClient.openServer(HttpClient.java:530)
2012-04-19 00:24:26 [SEVERE]     at sun.net.www.http.HttpClient.<init>(HttpClient.java:240)
2012-04-19 00:24:26 [SEVERE]     at sun.net.www.http.HttpClient.New(HttpClient.java:321)
2012-04-19 00:24:26 [SEVERE]     at sun.net.www.http.HttpClient.New(HttpClient.java:338)
2012-04-19 00:24:26 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:935)
2012-04-19 00:24:26 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:876)
2012-04-19 00:24:26 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:801)
2012-04-19 00:24:26 [SEVERE]     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1139)
2012-04-19 00:24:26 [SEVERE]     at java.net.URL.openStream(URL.java:1029)
2012-04-19 00:24:26 [SEVERE]     at net.minecraft.server.ThreadLoginVerifier.run(ThreadLoginVerifier.java:34)

Any help with this issue would be awesome and please many a player.

 

What is the system load sitting at when these errors start spamming it looks like the nameservers aren't responding fast enough to be able to verify usernames.

 

Yeah, as colk is saying, the server seems to not be able to get the DNS information for session.minecraft.net

Try changing your name servers to googles public DNS: 8.8.8.8, 8.8.4.4