可以看出transmit速度与size成反比,而receive速度只在64 byte时达到最大,调查显示这是因为NIC或I/O bridge发出的read-modify-write cycles不是full cache line。 传输速度 VS batch size 多个batches可以提高系统的throughput,这是因为它可将系统调用和其他昂贵的操作cost进行摊销。图中可以看出batch size为1时,through...
In network processing, where the system throughput is the main optimization goal, the design choice typically falls toward more, but slower, processors to achieve higher aggregate processing power. • Higher processing power vs more memory: Another important trade-off relating to the processing ...
This is a significant degradation: as noted in commit e0fc8fe78, the improvement from adding SACK was in the region of 400%-700% of throughput increase. It would be interesting to try undionly.kpxe in the known-bad setup with a single modification: change HEAP_SIZE (in core/malloc.c) ...
To avoid the sender having to wait for an acknowledgement before transmitting the next frame, thereby limiting throughput due to the time taken to transmit, check and process frames, X.25 level 2 adopts a window size of seven. This means the sender can transmit up to seven frames before an...
For most users, packet loss comes in the form of a slow document download, frozen video, or a garbled Voice over Internet Protocol (VoIP) call. Packet loss will generally reduce the speed or throughput—the actual amount of data that flows through the network—of a given connection. ...
Hi Kary, I hope you are well. I’m an ex-colleague of yours (and we met in SFO). You might remember me. You mentioned that perl script to break up the packets to the MSS size. I’d be really interested in seeing that. Meanwhile, all the best to you and Packetbomb. ...
bcbio-nextgen - A toolkit providing best-practice pipelines for fully automated high throughput sequencing analysis. bccb - Collection of useful code related to biological analysis. Biopython - Biopython is a set of freely available tools for biological computation. blaze - NumPy and Pandas interface...
the C9600 utilizes port buffers to accommodate that excess traffic and dynamically decreases the IFG/IPG size to avoid any impact and ensure traffic throughput and switch performance. The issue arises when some peer devices are unable to handle the smaller IFG/IPG sizes and n...
The exceeding token bucket is initially full (the number of bytes specified in the Be (excess burst size). If the conforming token bucket is full when tokens arrive (at the CIR, analogous to a 1R2C policer), they overflow into the excess token bucket. If both...
Sign in to download full-size image Figure 3.11. File transfer throughput (normalized to the link's bit rate) vs. packet loss probability for TCP Tahoe and Reno; with independent losses (denoted as i.i.d.), and with Rayleigh fading with fdLC=0.01.Adapted from Zorzi et al. [144]. ...