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18%
Linux nftables packet filter
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Lead Image © alphaspirit, 123RF.com
The Linux kernel already contains a variety of packet filters, starting with ipfwadm and followed by ipchains and iptables. Kernel 3.13 saw the introduction of nftables [1], which uses the nft tool
18%
Tuning ZFS for Speed on Linux
17.03.2020
Home »  HPC  »  Articles  » 
.39K     sde          -      -      0      0     16  3.38K     sdf          -      -      0      0     16  3.37K logs             -      -      -      -      -      -   nvme0n1p2      0    92G      0      0    586  56.6
18%
High-Performance Python 1
16.07.2019
Home »  HPC  »  Articles  » 
is spent compiling the function. Recall that the first pass through the code compiles it. Subsequent passes do not: CPU times: user 72.3 ms, sys: 8 µs, total: 72.3 ms Wall time: 72 ms Notice that the run
18%
Group policies on Windows Server 2022
05.02.2023
Home »  Archive  »  2023  »  Issue 73: Datab...  » 
Photo by Jack Carter on Unsplash
] Group policy settings for Windows Server 2022 [3] Windows Server 2022 comes with 47 new policy settings, for a total of 4,442 policies. More key data include: 39 new policies for the computer
18%
Interprocess communication essentials in Perl
05.12.2019
Home »  Archive  »  2019  »  Issue 54: NVMe...  » 
Lead Image © Carsten Reisinger, 123RF.com
Child Read and Write 01 Use IO::Handle; 02 03 pipe(READHANDLE, WRITEHANDLE); 04 05 WRITEHANDLE->autoflush(1); 06 READHANDLE->autoflush(1); 07 08 if ($processed = fork) { 09 close(READHANDLE); 10
18%
Setting up SELinux policies
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © Agustin Paz, 123RF.com
: 1.0 05 Release: 1%{?dist} 06 License: GPL v2 or later 07 Source0: local.te 08 Source1: local.fc 09 Source2: local.if 10 Group: Development/Tools 11 Summary
18%
Tuning loops – from loop unrolling to Duff's device
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
)/8; switch(count%8){ case 0: do{ *to = *from++; case 7: *to = *from++; case 6: *to = *from++; case 5: *to = *from++; case 4: *to = *from++; case 3: *to = *from++; case 2: *to
18%
ZFS on Linux helps if the ZFS FUSE service refuses to work
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © Luis Louro, 123RF.com
in the form of a master boot record (MBR) or a GUID partition table (GPT) [3]. The tricks the expert used to revive RAID systems (Figure  1) did not help: Neither fdisk nor mmls – the forensic counterpart from
18%
ASP.NET web development framework
30.11.2020
Home »  Archive  »  2020  »  Issue 60: Secur...  » 
Lead Image © balein, 123RF.com
requires the .NET Core runtime on the target machine in the version against which the application was originally compiled. At the time of print, version 3.1 of the framework is up to date. All code examples
18%
Gathering Data on Environment Modules
10.09.2012
Home »  HPC  »  Articles  » 
.own lib/atlas/3.8.4 mpi/mpich2/1.5b1-open64-5.0 module-cvs mpi/openmpi/1.6-gcc-4.4.6 [laytonjb@test1 ~]$ modules list No Modulefiles Currently Loaded. [laytonjb@test1

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