Archive for February, 2016

boost performance for bulk insert operation into large table.

I have encountered some performance issues while migrating data from SSD pure Linux environment (no virtualization) into hybrid paravirtualized multi-tier stuff. I used docker containers and bCache hybrid storage. Frontend consists of NVMe (fusionIO) 400G RAID1 and backend is EMC VNX5200 SAS RAID6. In my case the process of mass inserts was not stable – […]

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Docker: get relation between container and interface veth

The idea is to receive the index of the next interface. # Get veth interface: MY_CONTAINER_NAME=”mysql_server_1″ LINK_INDEX=`docker exec -it $MY_CONTAINER_NAME ip a l eth0 | awk -F “:” ‘{if (NR==1) print $1+1}’` ip link ls | grep “^$LINK_INDEX” | awk -F”:” ‘{ gsub (” “, “”, $2); print $2}’ Now you can easily observe the […]

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