线上服务器运行时突然停止了，而且访问这台服务器的界面很卡，而且停止服务器时遇到如下问题：
Insufficient space for shared memory file
首先咨询百度翻译，意思是：共享内存文件空间不足。
提示文件空间不足，而恰巧我们的程序涉及到文件的上传。
那么肯定是文件存储的磁盘空间不足。
使用 df 查看一下文件存储的磁盘的利用率，已然达到了 100%。如下：
好吧，咨询了一下专业的人士，他将不要将 tomcat 放在 /usr/local 下面，因为 /usr/ 目录与 /home 目录共用一个磁盘分区，而且分区比较小。
建议将服务器放到 /app 目录下。/app 是专门存放应用的路径。
附录：
下面是一些 linux 查看磁盘的命令演示：
[root@yjyapp ~]# df -m | |
Filesystem 1M-blocks Used Available Use% Mounted on | |
/dev/vda2 50397 25763 22075 54% / | |
tmpfs 7976 1 7976 1% /dev/shm | |
/dev/vda1 194 34 151 19% /boot | |
/dev/vdb 201587 188 191160 1% /file | |
/dev/vdc 503967 944 477423 1% /app |
[root@yjyapp ~]# fdisk -l | |
Disk /dev/vda: 64.4 GB, 64424509440 bytes | |
16 heads, 63 sectors/track, 124830 cylinders | |
Units = cylinders of 1008 * 512 = 516096 bytes | |
Sector size (logical/physical): 512 bytes / 512 bytes | |
I/O size (minimum/optimal): 512 bytes / 512 bytes | |
Disk identifier: 0x000edfae | |
Device Boot Start End Blocks Id System | |
/dev/vda1 * 3 409 204800 83 Linux | |
Partition 1 does not end on cylinder boundary. | |
/dev/vda2 409 104434 52428800 83 Linux | |
Partition 2 does not end on cylinder boundary. | |
/dev/vda3 104434 121078 8388608 82 Linux swap / Solaris | |
Partition 3 does not end on cylinder boundary. | |
Disk /dev/vdb: 214.7 GB, 214748364800 bytes | |
16 heads, 63 sectors/track, 416101 cylinders | |
Units = cylinders of 1008 * 512 = 516096 bytes | |
Sector size (logical/physical): 512 bytes / 512 bytes | |
I/O size (minimum/optimal): 512 bytes / 512 bytes | |
Disk identifier: 0x00000000 | |
Disk /dev/vdc: 536.9 GB, 536870912000 bytes | |
16 heads, 63 sectors/track, 1040253 cylinders | |
Units = cylinders of 1008 * 512 = 516096 bytes | |
Sector size (logical/physical): 512 bytes / 512 bytes | |
I/O size (minimum/optimal): 512 bytes / 512 bytes | |
Disk identifier: 0x00000000 |
[root@yjyapp ~]# df -lh | |
Filesystem Size Used Avail Use% Mounted on | |
/dev/vda2 50G 26G 22G 54% / | |
tmpfs 7.8G 264K 7.8G 1% /dev/shm | |
/dev/vda1 194M 34M 151M 19% /boot | |
/dev/vdb 197G 188M 187G 1% /file | |
/dev/vdc 493G 944M 467G 1% /app |
[root@yjyapp ~]# df -lh /home/uploadfile/ | |
Filesystem Size Used Avail Use% Mounted on | |
/dev/vda2 50G 26G 22G 54% / |
查看当前目录下各文件夹所占内存及总内存
[root@oadev weaver]# du -ah --max-depth=1 | |
1.1G ./workspace | |
47M ./e-message客户端 | |
299M ./jdk1.7.0_79 | |
1.4G ./EMobile_bak | |
234M ./jdk1.6.0_27 | |
4.0K ./lost+found | |
808M ./Resin | |
27M ./e-message | |
86M ./EMobile | |
1.3G ./ESearch | |
1.8G ./ESearch_bak | |
92G ./ecology | |
264K ./diffver | |
98G . |
