pcie hba

can support 5w QPS, and in some simple scenarios, you may not even have to configure the cache layer to do the caching. PS: Hardware testing is best to do their own measurement, the official data can only be used as a reference value, because many times the performance depends heavily on the scene, thinning to different SQL will get a big difference between the conclusion, it is best to test themselves. In 2012, Weibo used Pcie-flash to

improve database performance and improve the concurrency of our database!TIPS: use multi-core CPUs.The third palm----See the Dragon in the fieldAs we all know, IO is always a bottleneck for the database, and it is possible for some time in the future. Therefore, the requirements for the storage medium is very high, for the high IO system, it is recommended that we use the faster storage SSD SSDs can improve the data read and write performance of hundreds of times or the

probability. 3, Adopt RAID-10, and choose force WB. At the OS level, you can have several optimizations: Adjust IO Scheduler Using XFS Adjust other kernel options Note: Vm.swappiness, reduce the probability of the occurrence of swap; Vm.dirty_background_ratio Vm.dirty_ratio To avoid a sudden large number of I/O requests causing the system to die. From this test results can be seen noop/deadline have obvious advantages. This IO scheduler can also

performance increase:1, the use of SSD or PCIe SSD devices, at least hundreds of times times or even tens of times the IOPS increase;2, the acquisition of the array card with the cache and the Bbu module, can significantly increase the IOPS (mainly refers to mechanical disk, SSD or PCIe SSD except. At the same time, the health of the cache and the Bbu module should be checked periodically to ensure that th

the Ethernet frame header. When a VLAN switch receives an Ethernet frame with a tag field, it can use this tag field to select the port to which the request is forwarded, and decide whether to remove the tag, or receive the Ethernet frame without the tag. Based on the port configuration information, decide whether to forward the frame and whether to add the tag...We say that Ethernet is a broadcast network. This Ethernet refers to the physical layer. For the link layer, it is only a part of the

the kernel virtual address, the physical address is obtained through ipv_to_phy. PCI-E outbound and inbound When the PCIe device and the system memory access each other, Outbound refers to the CPU to the device direction; Inbound refers to the device --> RC (CPU end) Direction. In terms of concept, devices are all external devices. When the CPU reads and writes RC registers, it is still within the range of on-chip systems, so it is neither inbound n

number:" 'dmidecode | grep-A5 "Memory Device" | grep Size | grep-v No | wc-l' Output result: [Root @ sc00006 test] # bash test. shIP:10.0.17.610.0.250.6Product Name:Product Name: PowerEdge R720SKU Number: SKU = NotProvided; ModelName = PowerEdge R720Product Name: 0DCWD1CPU Info:Intel (R) Xeon (R) CPU E5-2620 v2 @ 2.10 GHzIntel (R) Xeon (R) CPU E5-2620 v2 @ 2.10 GHzDisk Info:Disk/dev/sda: 1074 GBDisk/dev/sdb: 18.9 TBNetwork Info:0:00. 0 Ethernet controller: Broadcom Corporation NetXtreme BCM5720

Close to the verge of collapse. Today this article is conceived in the hospital, and I am ill again. I 'd rather drop a bottle and take no medicine, but cannot access the Internet with my notebook. I can't do anything, I want to know something. I can only use 3 GB and don't dare to open a hot spot. Because no one reimbursed me for the traffic, I only had one day this weekend. It rained and I had another night. After learning about PF_RING, I was eager to do an experiment, so I ran home for verif

Armada Series No Product Name Part Numbers CPU base architecture I/O support Frequency Number of issues Cache DDR controller Package Size Package Type Ball pitch I-Temp Evaluation Board Software 1 armada 300 family88f6282 more info high-performance CPU 88f6282 armv5te Single Core 2 x GBE, 2 x PCIe