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100%
Automating command execution across servers
01.06.2024
Home »  Archive  »  2024  »  Issue 81: Load...  » 
Photo by Adrian Hartanto on Unsplash
Rubén Llorente ... : [devuan] 10 donkey: 11 user: root 12 host: donkey.operationalsecurity.es 13 tags: [devuan] 14 zebra: 15 user: root 16 host: zebra.operationalsecurity.es 17 tags: [devuan] 18 19
99%
Discover the power of RouterBOARDS
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Lead Image © andreysuslov, 123RF.com
Rubén Llorente ... is easy enough (superuser privileges are required): arp -s 192.168.90.55 00:0c:29:c1:91:b1 The last field of the command is the MAC address, which is the unique identifier of the network device to which
28%
When I/O workloads don't perform
02.08.2021
Home »  Archive  »  2021  »  Issue 64: Bare...  » 
Lead Image © Viacheslav Iakobchuk, 123RF.com
%util sda 10.91 6.97 768.20 584.64 4.87 18.20 30.85 72.31 13.16 20.40 0.26 70.44 83.89 1.97 3.52 nvme0n1 58.80 12.22 17720.47 48.71 230
27%
Monitoring Storage with iostat
25.02.2013
Home »  HPC  »  Articles  » 
0.00 01/31/2013 09:56:03 AM avg-cpu: %user %nice %system %iowait %steal %idle 6.00 0.00 2.00 0.50 0.00 91.50 Device: rrqm/s wrqm/s r/s w/s rMB
27%
Speed up your MySQL database
11.02.2016
Home »  Archive  »  2016  »  Issue 31: Tunin...  » 
Lead Image © Mikhail Dudarev, 123RF.com
there are normally two. The size of these two files influences the speed of write access to InnoDB. This value was far too small for many years (5MB). The new default values in MySQL  5.6 take this into account
27%
A closer look at hard drives
18.07.2013
Home »  Archive  »  2013  »  Issue 15: What’...  » 
Lucy Baldwin, 123RF
: XXXXXXXXXXXXXXXXXX 6 Firmware Revision: 2CV102HD 7 Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6 8 Standards: 9 Used: ATA/ATAPI-7 T13 1532
26%
Rethinking RAID (on Linux)
16.03.2021
Home »  HPC  »  Articles  » 
B/s), 1236KiB/s-1236KiB/s (1266kB/s-1266kB/s), io=72.5MiB (76.1MB), run=60102-60102msec Disk stats (read/write):     md0: ios=53/18535, merge=0/0, ticks=0/0, in_queue=0, util=0.00%, aggrios=33/18732, aggrmerge
25%
Process, Network, and Disk Metrics
26.02.2014
Home »  HPC  »  Articles  » 
 reqs merged:           1.42/s     Write reqs completed:            0.98/s    Read BW:                     0.05 MB/s  Write BW:                        0.13 MB/s    Avg sector size issued     108.81       Avg
25%
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
25%
Rethinking RAID (on Linux)
25.03.2021
Home »  Archive  »  2021  »  Issue 62: Lean...  » 
Lead Image © nikkikii, 123RF.com
B/s-1371KiB/s (1404kB/s-1404kB/s), io=80.5MiB (84.4MB), run=60145-60145msec Disk stats (read/write): md0: ios=100/20614, merge=0/0, ticks=0/0, in_queue=0, util=0.00%, aggrios=103/20776, aggrmerge=0

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