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30%
Kea, the ISC's successor to the DHCP daemon
03.08.2023
Home »  Archive  »  2023  »  Issue 76: Energ...  » 
Photo by Markus Winkler on Unsplash
in 2014. At the time of writing, the available Kea versions were 2.2.0 (July 2022, Current-Stable) and 2.3.6 (March 2023, Experimental-Development). Most distributions have prebuilt Kea packages
30%
Preload Trick
11.05.2021
Home »  HPC  »  Articles  » 
, elapsed Time = %9.6f, GFlops = %9.6f ", ...                 N, elapsedTime, gFlops) );   endfor Listing 2: Double-Precision Square Matrix Multiply # Example DGEMM   for N = [2, 4, 8, 16
30%
Getting Started with HPC Clusters
05.06.2013
Home »  HPC  »  Articles  » 
+ (OC)/1866 (OC)/1600 (OC)/1333/1066/800 memory; 32GB maximum memory, dual-channel; 2 PCIe 2.0x16 slots (x16, x4), 2 PCI slots; 5x SATA 6Gbps connectors, RAID-0/1/10; Realtek 8111E GigE NIC 1
30%
Enlarging the TCP initial window
06.10.2019
Home »  Archive  »  2019  »  Issue 53: Secur...  » 
Photo by Jani Brumat on Unsplash
private homes in large cities use fiber optics with transmission rates of 1GBps. However, the basic concept of TCP has not changed in all these years. TCP does not know the maximum transfer rate
30%
Assess USB performance while exploring storage caching
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Lead Image © Lucy Baldwin, 123RF.com
of the data was still residing in the kernel's page cache [6], waiting eventually to be persisted to disk. This resulted in an impressive (and impossible for the hardware) 885MBps transfer rate, but not to disk
30%
A closer look at hard drives
18.07.2013
Home »  Archive  »  2013  »  Issue 15: What’...  » 
Lucy Baldwin, 123RF
-generation SSD, being tested on a 3Gbps SATA 2 bus. I have an 80GB Intel 320 SSD, performing remarkably close to its specified sequential read rating of 270MBps [1], but it is the second-generation drive
30%
Monitoring NFS Storage with nfsiostat
12.03.2013
Home »  HPC  »  Articles  » 
is shown in Listing 1. Listing 1: Sample nfsiostat Output Linux 2.6.18-308.16.1.el5.centos.plus (home8) 02/10/2013 _i686_ (1 CPU) 02/10/2013 03:38:48 PM Filesystem: rMB_nor/s w
30%
Storage protocols for block, file, and object storage
30.05.2021
Home »  Archive  »  2021  »  Issue 63: Autom...  » 
Photo Johannes Plenio on Unsplash
on a fabric simultaneously. Existing Gen5 (16Gbps) and Gen6 (32Gbps) FC SANs can run FC NVMe over existing SAN fabrics with little change, because NVMe meets all specifications, according to the Fibre Channel
30%
Let the hardware do the heavy lifting
09.06.2018
Home »  Archive  »  2018  »  Issue 45: Autom...  » 
Photo by Victor Freitas on Unsplash
machines connected back-to-back with a 100Gbps (100G) network adapter and OpenSSL, our lab tested application s_time on the client and s_server on the server, with and without inline TLS enabled and using
30%
Proactive threat detection
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Lead Image © dunord, 123RF.com
are no longer looking at bandwidths in the 1Gbps range; instead, 25Gbps is the norm, and even 400Gbps is no longer uncommon. Other packet filters for Linux, most notably the now obsolete iptables, are simply too

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