Вопрос к знатокам процессоров.
Есть такой роутер Buffalo WZR-HP-AG300H (достаточной мощный).
Он реализован на
CPU1: Atheros AR7161 (680 MHz)
RAM1: 128 MB (Samsung K4H511638G-LCCC x 2)
По описанию процессора
Atheros AR7161
Processor Speeds 680 MHz
System type : Atheros AR7161 rev 2
Cpu model : MIPS 24Kc V7.4
BogoMIPS : 452.19
против (в N66U)
Broadcom BCM5300
Processor Speeds 600 MHz
System type : Broadcom BCM5300 chip rev 1 pkg 0
Cpu model : MIPS 74K V4.9
BogoMIPS : 299.82
Что производительнее?
Last edited by Hamber; 10-01-2012 at 13:29.
lly, сильно удивился ассемблерным вставкам в r4162-r4165. Я конечно, понимаю, что они предназначены для акселерации вычислений, но ведь это жесть!
Представить обсчёт контрольной суммы ip-пакета в RISC командах ещё как-то можно (arch/mips/lib/csum_partial.S), но писать внутриядерную сигнализацию (arch/mips/kernel/*.S) в этом reduced instruction set просто заколебёшься! Неужели где-то есть на свете люди, способные писать сложные вещи на сокращённом наборе ассемблерных команд?!
Сам я дальше ассемблера восьмибитного Zilog Z80 не пошёл.
Ну кто-то же любит разгадывать головоломки?
А учитывая особенности выравнивания и конвейера на RISC'ах иногда получается сделать намного более эффективный код.
Я тоже поначалу офигевал от sparc'овского кода:
а в главной программе после call func1 идёт анализ %i2 ...Code:func1: ... ret add %i2,1,%i2
P.S. MIPS'овый код знаю из рук вон плохо, всё никак не раскачаюсь подучить
Asus RT-AC56U http://www.asus.com/Networks/Wireless_Routers/RTAC56U/
CPU BCM4708@800MHz (ARM® DualCore Cortex A9)/Flash 128MB/RAM 256MB
http://www.hub.ru/wiki/Devices_ASUS_WL_Routers#RT-AC
З.Ы. Ну и процессор там можно разогнать до 1.2 GHz
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Broadcom Announces Industry's First 64Bit Quad-core Router Processor
Delivers CPU Power Needed for IoT and Smart Home Applications
LAS VEGAS, Jan. 4, 2016 /PRNewswire/ -- CES International 2016
Broadcom Corporation (NASDAQ: BRCM), a global innovation leader in semiconductor solutions for wired and wireless communications, today announced the industry's first 64bit quad-core processor for high-end routers. The BCM4908 enables OEMs and service providers to deliver the extra CPU power needed for smart home and Internet of Things applications while unleashing the higher Internet speeds coming into the home. For more CES news, visit Broadcom's Newsroom.
The BCM4908 includes the industry's first 1.8GHz 64Bit quad-core ARM CPU and uses Broadcom's Runner™ network packet processor to deliver more than 5 Gbps of system data throughput without taxing the CPU. It also supports the increased speeds coming into the home including Google Fiber and Comcast 2 Gbps via an interface for a 2.5 Gigabit Ethernet PHY, allowing consumers to enjoy the fastest connection available today.
"With this new SoC, Broadcom is driving home network connectivity to the next level," said Manny Patel, Broadcom Director of Marketing, Wireless Connectivity. "By increasing the CPU performance and adding advanced features, we're enabling OEMs to build more powerful home routers that address the increased bandwidth requirements needed to support the continued consumption of high-bandwidth content, growing demand for UltraHD as well as the growing emergence of more IoT and smart home applications."
The BCM4908 pairs with Broadcom's BCM4366 wave 2 5G WiFi MU-MIMO to deliver more than 3.4Gbps of simultaneous Wi-Fi throughput.
Key Features and Benefits
•Zero CPU Wi-Fi offload frees up CPU resources for other tasks
•BroadStream iQoS acceleration
•Dedicated security processor to enable hardware VPN acceleration
•2.5Gb Base-X Ethernet WAN/LAN port for supporting fast connectivity to multi-gigabit modem or a Network Attached Storage (NAS) device
•Feature-rich connectivity with integrated SATA III, two USB 3.0 ports and three PCIe Gen 2 ports reduces external RBOM cost
•Utilizes low power 28nm technology and advanced power management, offering power reductions of more than 50 percent as compared to previous solutions
•Supports Broadcom's tri-band (AC5300) 5G WiFi XStream 802.11ac MU-MIMO: ◦Three BCM4366 4x4 radios, each with an integrated CPU for host offload processing
◦Providing a total of seven CPU cores ("Septacore") with more than 9.6 GHz of CPU horse power
•Powerful hardware acceleration for routing and USB storage
Availability
The BCM4908 is currently sampling.
For ongoing Broadcom news visit our Newsroom, read our B-Connected Blog, or visit us on Facebook or Twitter. And to stay connected, subscribe to our RSS Feed.
Интересный на этом чипе должен получится роутер )