If you are running a recent Kernel, you can achieve this benefit by mounting the /proc filesystem with the new hidepid option. This option was added in Linux kernel 3.3 The proc filesystem is a pseudo-filesystem which provides an interface to kernel data structures. It is commonly mounted at /proc. Most of it is read-only,…
By default on Debian is used 8169 driver instead of 8168 (Realtek ethernet driver). Also, 8168 driver does not exist. ~# find /lib/modules/`uname -r`/kernel/drivers/net/ethernet/ -name *816* /lib/modules/3.16.0-4-amd64/kernel/drivers/net/ethernet/realtek/r8169.ko The network device ~# lspci |grep Ether 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 09) The loaded driver ~# lsmod |grep…
There are many tools for network monitoring but you can do this with a simple bash script. #!/bin/bash time=”1″ # one second int=”eth0″ # network interface while true do txpkts_old=”`cat /sys/class/net/$int/statistics/tx_packets`” # sent packets rxpkts_old=”`cat /sys/class/net/$int/statistics/rx_packets`” # recv packets sleep $time txpkts_new=”`cat /sys/class/net/$int/statistics/tx_packets`” # sent packets rxpkts_new=”`cat /sys/class/net/$int/statistics/rx_packets`” # recv packets txpkts=”`expr $txpkts_new – $txpkts_old`”…
By default on CentOS 6.x is used 8169 instead of 8168 driver for Ethernet. Network device display (lspci output): [root@static89 ~]# lspci|grep Eth 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 09) Loaded driver: [root@static89 ~]# lsmod|grep 816 r8169 74378 0 From dmesg output: r8169 Gigabit Ethernet driver 2.3LK-NAPI…
What is fio ? fio is a tool that will spawn a number of threads or processes doing a particular type of I/O action as specified by the user. The typical use of fio is to write a job file matching the I/O load one wants to simulate. How to install fio ? Debian /…