Hello, folks! It's very useful patches and they can do my tasks simpler and faster.
In my day to day work I working with Linux servers with enormous amount of processes (~25 000 per server). This servers run multiple hundreds of Linux containers. If I want analyze processor load, network load or check something else I use top/atop/htop/netstat. But they work very slow and consume significant amount of CPU power for parsing multiple thousands text files in /proc (like /proc/tcp, /proc/udp, /proc/status, /proc/$pid/status). Some time ago I worked on malware detection toolkit for Linux - Antidoto (https://github.com/FastVPSEestiOu/Antidoto) which uses /proc filesystem very deeply. For detecting malware I need check every descriptor, every sockets and get complete information about all processes on system. But with current text file based architecture of /proc I can't achieve suitable speed of my toolkit. For example, there you can look at time of processing all network connections for server with 20244 processes with linux_network_activity_tracker.pl (https://github.com/FastVPSEestiOu/Antidoto/blob/master/linux_network_activity_tracker.pl): real 1m26.637s user 0m23.945s sys 0m43.978s As you can see this time is very huge but I use latest CPUs from Intel (Xepn 2697v3). I have multiple ideas about complete realtime Linux server monitoring but without ability to pull information from the Linux Kernel faster I can't realize they. -- Sincerely yours, Pavel Odintsov -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
