ASPM (Active-State Power Management) is used to manage the power consumption of PCI Express buses, even if the PCIe device is in use and may affect the device’s response delay.Continue reading “PCI Express ASPM”
In this article I will give an example of changing gc_thresh on Linux, this parameter usually needs to be increased on highly loaded access servers.Continue reading “Changing gc_thresh on Linux”
Since InnoDB is more reliable for storing important data and is more efficient with frequent write requests, I will convert MyISAM tables to InnoDB, in old databases, in one of the companies.Continue reading “How to convert MySQL tables from MyISAM to InnoDB”
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Author: Toshiaki Makita
NTT Open Source Software Center
Let me give you an example of installing Memcached, which allows you to cache data in RAM.Continue reading “Installing Memcached”
I will give an example of installing or updating ixgbe drivers on Linux.Continue reading “Installing and updating the ixgbe driver”
I decided to add to Zabbix a check of the number of Combined channels of network interfaces, since when loading the server there could be different situations when my scripts changing their number were not always executed or were executed, but the value was reset during the system startup.Continue reading “Monitoring Combined Network Interface Channels in Zabbix”
I will give an example of the distribution of interrupt network interfaces on the processor cores.
For example, I’ll take a server with accel-ppp, 6Gb/s traffic, 500K + pps, nat with ipoe and 6000 dchp clients.
Also, be sure to disable hyper-threading in the BIOS, since load balancing on virtual cores can greatly increase the load on some physical cores.
Once on a single Cisco 6509e switch configured as L3 and with a standard CPU load of 10%, the load suddenly increased to 40%.Continue reading “Cisco 6509e Net Input CPU Load”
Once, on the port of one of the L3 switches of the Cisco 6509e, to which the Huawei MA5683T was connected, I saw that Multicast traffic increased very much, while the CPU load of the switch processor increased by 30%.Continue reading “How to catch flood on Huawei MA5600”