服务器频繁崩溃

IDGC

服务器之前都还好好地，最近老是莫名其妙的崩。具体表现为服务器根目录每天都会出现1000+个名字为hs_err_pidxxxxx的文件。严重的时候服务器直接卡死，只能硬重启。下面是错误报告：
[16:18:18] [User Authenticator #72/INFO]: UUID of player JOK is 55780932-83ef-3087-8e4a-c9ba4ba5bf13
[16:18:18] [Server thread/INFO]: JOK[/111.162.197.232:51924] logged in with entity id 453025 at ([survival] -572534.2095704634, 69.0, -78073.22290268666)
[16:19:47] [Async Chat Thread - #11/INFO]: [空岛]<tim> 怎么给别人空岛权限
[16:21:37] [Spigot Watchdog Thread/ERROR]: The server has stopped responding!
[16:21:37] [Spigot Watchdog Thread/ERROR]: Please report this to http://www.spigotmc.org/
[16:21:38] [Spigot Watchdog Thread/ERROR]: Be sure to include ALL relevant console errors and Minecraft crash reports
[16:23:51] [Spigot Watchdog Thread/ERROR]: Spigot version: git-Spigot-1649 (MC: 1.7.10)
[16:23:58] [Spigot Watchdog Thread/ERROR]: ------------------------------
[16:23:59] [Spigot Watchdog Thread/ERROR]: Server thread dump (Look for plugins here before reporting to Spigot!):
[16:26:34] [Server thread/INFO]: 1252122848 lost connection: Internal Exception: java.io.IOException: Connection reset by peer
[16:26:35] [Server console handler/ERROR]: Exception handling console input
java.io.IOException: Input/output error
        at java.io.FileInputStream.readBytes(Native Method) ~[?:1.8.0_51]
        at java.io.FileInputStream.read(Unknown Source) ~[?:1.8.0_51]
        at java.io.BufferedInputStream.fill(Unknown Source) ~[?:1.8.0_51]
        at java.io.BufferedInputStream.read(Unknown Source) ~[?:1.8.0_51]
        at java.io.FilterInputStream.read(Unknown Source) ~[?:1.8.0_51]
        at org.bukkit.craftbukkit.libs.jline.console.ConsoleReader$1.read(ConsoleReader.java:167) ~[spigot1649.jar:git-Spigot-1649]
        at org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:267) ~[spigot1649.jar:git-Spigot-1649]
        at org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:204) ~[spigot1649.jar:git-Spigot-1649]
        at org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:995) ~[spigot1649.jar:git-Spigot-1649]
        at org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:1167) ~[spigot1649.jar:git-Spigot-1649]
        at net.minecraft.server.v1_7_R4.ThreadCommandReader.run(ThreadCommandReader.java:32) [spigot1649.jar:git-Spigot-1649]
[16:26:38] [Spigot Watchdog Thread/ERROR]: ------------------------------
[16:26:38] [Spigot Watchdog Thread/ERROR]: Current Thread: Server thread
[16:26:38] [Spigot Watchdog Thread/ERROR]:         PID: 17 | Suspended: false | Native: false | State: RUNNABLE
[16:26:38] [Spigot Watchdog Thread/ERROR]:         Stack:
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 org.bukkit.inventory.ItemStack.getType(ItemStack.java:144)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:384)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.EntityLiving.die(EntityLiving.java:810)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.EntityLiving.damageEntity(EntityLiving.java:745)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.EntityAnimal.damageEntity(SourceFile:145)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.EntityHuman.attack(EntityHuman.java:950)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:1204)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.PacketPlayInUseEntity.a(PacketPlayInUseEntity.java:37)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.PacketPlayInUseEntity.handle(PacketPlayInUseEntity.java:49)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:186)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java:81)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:734)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490)
[16:26:38] [Spigot Watchdog Thread/ERROR]:                 net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628)
[16:26:38] [Spigot Watchdog Thread/ERROR]: ------------------------------
[16:26:38] [Spigot Watchdog Thread/ERROR]: Entire Thread Dump:
[16:26:39] [Spigot Watchdog Thread/ERROR]: ------------------------------
[16:26:39] [Thread-4/INFO]: Stopping server
[16:26:39] [Spigot Watchdog Thread/ERROR]: Current Thread: SIGTERM handler
[16:26:39] [Spigot Watchdog Thread/ERROR]:         PID: 409 | Suspended: false | Native: false | State: BLOCKED
[16:26:39] [Spigot Watchdog Thread/ERROR]:         Stack:
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 java.lang.Shutdown.exit(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 java.lang.Terminator$1.handle(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 sun.misc.Signal$1.run(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 java.lang.Thread.run(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]: ------------------------------
[16:26:39] [Spigot Watchdog Thread/ERROR]: Current Thread: SIGHUP handler
[16:26:39] [Spigot Watchdog Thread/ERROR]:         PID: 408 | Suspended: false | Native: false | State: BLOCKED
[16:26:39] [Spigot Watchdog Thread/ERROR]:         Stack:
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 java.lang.Shutdown.exit(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 java.lang.Terminator$1.handle(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 sun.misc.Signal$1.run(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 java.lang.Thread.run(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]: ------------------------------
[16:26:39] [Spigot Watchdog Thread/ERROR]: Current Thread: SIGHUP handler
[16:26:39] [Spigot Watchdog Thread/ERROR]:         PID: 407 | Suspended: false | Native: false | State: BLOCKED
[16:26:39] [Spigot Watchdog Thread/ERROR]:         Stack:
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 java.lang.Shutdown.exit(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 java.lang.Terminator$1.handle(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 sun.misc.Signal$1.run(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]:                 java.lang.Thread.run(Unknown Source)
[16:26:39] [Spigot Watchdog Thread/ERROR]: ------------------------------
[16:26:39] [Spigot Watchdog Thread/ERROR]: Current Thread: SIGHUP handler
[16:26:39] [Spigot Watchdog Thread/ERROR]:         PID: 406 | Suspended: false | Native: false | State: RUNNABLE
[16:26:39] [Spigot Watchdog Thread/ERROR]:         Thread is waiting on monitor(s):
[16:26:39] [Spigot Watchdog Thread/INFO]: Startup script './start.sh' does not exist! Stopping server.