lsof FD列等于DEL，是什么意思? [英] lsof FD column equal to DEL, what does it mean?

问题描述

我有一个正在使用太多内存的进程.

I've a process which is using too much memory.

当我运行lsof -p <pid>时，输出为:

ETL-GRIB 5981 root  DEL    REG    8,4          183633075 /tmp/icom/65516_GRIB/20150921220023_6796_YTXG23EGRR211800__ln_3857.shp
ETL-GRIB 5981 root  DEL    REG    8,4          183633059 /tmp/icom/65516_GRIB/20150921220023_6796_YTXG23EGRR211800__pl_3857.shp
...

DEL是什么意思?可能是该进程在内存中但文件已被其他任何进程删除?

What DEL mean? It could be that the process has the file in memory but It has been deleted by any other process?

推荐答案

lsof通常报告TYPE列中带有mem的Linux /proc/<PID>/maps文件中的条目.但是，如果lsof无法stat(2)进程maps文件中的路径，并且maps file条目包含(deleted)，表示该文件在打开后被删除，则lsof报告该文件.键入为DEL.

lsof usually reports entries from the Linux /proc/<PID>/maps file with mem in the TYPE column. However, when lsof can't stat(2) a path in the process maps file and the mapsfile entry contains (deleted), indicating the file was deleted after it had been opened, lsof reports the file type as DEL.

是的，仅这些文件在被进程读取后即被删除.如果您已更新/替换了这些文件，则可能要重新启动服务/进程.

Yes, Simply those files are deleted after they are read by the process. If you have updated/replaced those files then you probably want to restart the service/process.

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