Connect SUT to client using either back to back or switch connection and configure an IP underthe same subnet. Both platforms should have NICs with same network speed. e.g. both with 10Gb 1. Enable Iperf on clients iperf3.exe -s Linux procedure: 2. Run Iperf on SUT Windows procedure: iperf3.exe -c <ip_client> -w 640k -P <X> … Continue reading “Iperf3 performance test-network adapter”
ib_read_bw Performs a read bandwidth diagnostic. Issued on the Linux InfiniBand host. Syntax ib_read_bw [-p TCP_port][-d device][-i IB_port][-m mtu][-o num][-s size][-a][-t depth][-n iters][-b][-V][-e][-F][IP_address] where: TCP_port is the TCP port. device is the InfiniBand device. IB_port is the InfiniBand port. mtu is the size of the MTU. num is the outstanding reads/atom. size is the size of the messages. depth is the size of the TX queue. iters is the number of … Continue reading “I/O performance test—InfiniBand Card”
Server machine usually connected with the external storage device via a PCI-E storage card, and then built a RAID array with these disks. it’s good job that can separate the storage ,but how to find and replace a bad disk especially when it’ raid mode. Linux OS would say something error in its messages file, … Continue reading “Seperate the disk failure from MegaRAID”
CentOS iscsi target server : [root@localhost ~]# yum install targetcli Loaded plugins: fastestmirror, langpacks Determining fastest mirrors * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: centos.ustc.edu.cn base | 3.6 kB 00:00 extras | 3.4 kB 00:00 updates | 3.4 kB 00:00 (1/2): extras/7/x86_64/primary_db | 150 kB 00:00 (2/2): updates/7/x86_64/primary_db | 3.6 MB 00:00 Resolving Dependencies –> … Continue reading “CentOS ISCSI storage solution”
Problem: Under SUSE OS, install some packages, for example zypper, but the installation fails with errors like this: *[PK_TMP_DIR|dir:///var/tmp/TmpDir.BaWgSp] Repository already exists. Solution: In YAST ==> Installed archives, deleted the entry *[PK_TMP_DIR| *and all work fine.