FORE Systems OC-12 adapter serves up gigabit throughput for server links.
FORE Systems, Inc. ForeRunner HE 622 ATM OC-12 PCI Adapter delivers aggregate bidirectional application throughput in excess of 1 Gbit/s using industry standard LANE. The HE 622, which slides into a PCI slot on NT and Solaris servers, supports industry standard extended LANE packet sizes. Tests using extended LANE packet sizes - 4,544 and 9,234 bytes - revealed increased throughput without any adverse impact on CPU usage. In fact, CPU utilization in most cases decreased, or remained the same relative to CPU used with frame sizes of 1,516 bytes.
Additionally, the HE 622's ATM traffic management capabilities, referred to by FORE as LAppQoS (Legacy Application Quality of Service), gave a higher priority and thus more bandwidth to one of two unspecified bit rate (UBR) client/server sessions running simultaneously, shaping application throughput according to user-specified bandwidth parameters. When substituting a CBR stream in place of one of the UBR streams, the HE 622 provided similar service, allocating a predefined bandwidth to the CBR traffic (see document 8277).
tolly.com
FORE Systems, Inc. ForeRunner HE 622 ATM OC-12 PCI Adapter NT and
Solaris TCP/UDP Application Performance and Traffic Management
Evaluation Test Summary
Document Number:
8277
Abstract:
In order to satisfy the insatiable demand for increased server performance, ATM network interface cards (NICs) must not only provide high throughput, but also minimize their impact on server CPU consumption. Using large frame sizes helps to both increase application throughput and minimize an adapter's use of CPU resources. Providing guaranteed bandwidth and predictable data delivery
across ATM networks also requires sophisticated Quality of Service technology at all points from end-station to end-station. ATM's traffic management capability allows industry standard end-to-end control of QoS parameters such as bandwidth allocation. FORE Systems, Inc. commissioned The Tolly Group to evaluate its ForeRunner HE 622, a PCI adapter that transfers data at OC-12 rates (up to 622.08 Mbit/s). The Tolly Group tested the adapter on a Sun
Microsystems Ultra 30 workstation and a Sun Ultra Enterprise 450 server (running Solaris 2.6) and Intel Corp. (formerly Digital Equipment Corp.) Alpha (NT 4.0) platforms. Testing probed the effect
of extended packet size on both server throughput and the adapter's impact on CPU utilization.
Additionally, The Tolly Group exercised the HE 622's ATM traffic management capabilities, referred to by FORE as LAppQoS (Legacy Application Quality of Service).
Download full report in Adobe Acrobat PDF format:
FORE Systems, Inc. ForeRunner HE 622 ATM OC-12 PCI Adapter NT and Solaris TCP/UDP Application Performance and Traffic Management Evaluation. |
