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25%
TCP Stealth hides open ports
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
Lead Image © momo5287, 123RF.com
\ ID.\0\0 \0\0\0\0\0\0\0 ...\0\0\0\0\0\0\0\0\0\ 0\0", 64) = 0 If you trace setsockopt() with Strace (Listing 2), you can easily see that TCP Stealth does not perform any encryption. Despite this, TCP
25%
Graphite: Collect and Visualize Numeric Data
30.07.2014
Home »  HPC  »  Articles  » 
00:00:00 Thursday January 1, 1970, Coordinated Universal Time (UTC). Listing 1: Perl Example Client #!/usr/bin/perl   use strict; use warnings; use IO::Socket; use Sys::CpuLoad;   my
25%
Oracle Database 12c: Cloud computing with multitenant architecture
14.11.2013
Home »  Archive  »  2013  »  Issue 17: Cloud...  » 
Lead Image © Jakub Jirsak, 123RF.com
_ID ------ -------- ---------- ---------- ------------------------------------------------------------- 2 PDB$SEED 4062623230 4062623230 E0C9D94CE3B6497BE04380B0A8C06105 NORMAL 1720734 1 3 PDB001 1700339437 1700339437 E0D0BE79135B75B0E04380B0A8C00F14 NORMAL 1956354 1
25%
Backups using rdiff-backup and rsnapshot
11.02.2016
Home »  Archive  »  2016  »  Issue 31: Tunin...  » 
Lead Image © Dmitry Pichugin, Fotolia.com
DestinationSizeChange 41943106 (40.0 MB) Another view of the file statistics lists which file effected the change: # gunzip -c /mnt/backup/rdiff-backup-data/file_statistics.\ 2015-03-15T10\:44\:06+01\:00.data.gz | awk '$2
25%
Read-only File Compression with SquashFS
14.06.2017
Home »  HPC  »  Articles  » 
 uncompressed inode table size (16846 bytes) Directory table size 2199 bytes (2.15 Kbytes)         63.72% of uncompressed directory table size (3451 bytes) Xattr table size 54 bytes (0.05 Kbytes)         100.00% of
25%
Read-only file compression with SquashFS
14.08.2017
Home »  Archive  »  2017  »  Issue 40: Lean...  » 
Lead Image © modella, 123RF.com
) Directory table size 2199 bytes (2.15 Kbytes) 63.72% of uncompressed directory table size (3451 bytes) Xattr table size 54 bytes (0.05 Kbytes) 100.00% of uncompressed xattr table size (54
25%
Comparing Ceph and GlusterFS
21.04.2015
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © agencyby, 123RF.com
-r--r-- 2 root root 6 3. Feb 18:36 .glusterfs/0d/19/0d19fa3e-5413-4f6e-abfa-1f344b687ba7 # # ls -alid dir1 .glusterfs/fe/9d/fe9d750b-c0e3-42ba-b2cb-22ff8de3edf0 .glusterfs /00/00
25%
VTP for VLAN management
04.10.2018
Home »  Archive  »  2018  »  Issue 47: Findi...  » 
Lead Image © bluedarkat, 123RF.com
:/ 1 -rw- 4414921 Aug 22 2017 00:00:02 c2960-lanbase-mz.122-25.FX.bin 2 -rw- 736 Aug 22 2017 10:53:02 vlan.dat 64016384 bytes total (59600727 bytes free) If you
25%
Measuring the performance of code
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Lucy Baldwin, 123RF.com
33 enum { probes = 10, loops = 1, }; 34 uint64_t iterations = strtoull(argv[1], 0, 0); 35 uint64_t upper = iterations*iterations; 36 37 double pi = M_PI; 38 double r = 0.0; 39 40 stats
25%
Small Tools for Managing HPC
18.10.2017
Home »  HPC  »  Articles  » 
)         libpgmp.so => /opt/pgi/linux86-64/16.10/lib/libpgmp.so (0x00007f5bc5694000)         libnuma.so.1 => /lib64/libnuma.so.1 (0x00007f5bc5467000)         libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f5bc524

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