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29%
Linux device mapper writecache
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Lead Image © lightwise, 123R.com
] test: (groupid=0, jobs=1): err= 0: pid=1225: Sat Oct 12 19:20:18 2019 write: IOPS=168k, BW=655MiB/s (687MB/s)(10.0GiB/15634msec); 0 zone resets [ ... ] Run status group 0 (all jobs): WRITE: bw=655Mi
29%
Getting started with I/O profiling
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Photosani, Fotolia.com
Analyzer report) In Table 2, you'll see that most of the data is passed in 1 to 8KB chunks (all-zero rows >100MB have been removed), with the vast majority in 1KB or smaller chunks. This indicates
29%
Linux Writecache
19.11.2019
Home »  HPC  »  Articles  » 
Jobs: 1 (f=1): [w(1)][100.0%][w=654MiB/s][w=167k IOPS][eta 00m:00s] test: (groupid=0, jobs=1): err= 0: pid=1225: Sat Oct 12 19:20:18 2019   write: IOPS=168k, BW=655MiB/s (687MB/s)(10.0GiB/15634msec); 0
29%
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
29%
Fundamentals of I/O benchmarking
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © Kheng Ho Toh, 123RF.com
/s wMB/s avgrq-sz ... sdb 0.00 28.00 1.00 259.00 0.00 119.29 939.69 ... Parallelism Multiple computers can access enterprise storage, and multiple threads can access
29%
The fine art of allocating memory
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
presence provides the system with a last chance for a soft landing before more drastic action is taken. This month, I examine the darker side of the picture: Swap hits 100%, and hard out-of-memory errors
29%
Linux filesystem performance tested
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© nyul, 123rf.com
cache SSD/Hard disks: two SATA-II Intel SSD 710 Series (100GB)/six SAS Toshiba MK2001TRKB 6GBps (2TB) Network: 4x Intel (IGB) 1Gbps Operating system: openSUSE 12.1 and Tumbleweed, kernel 3.1.10 and 3.3.6
29%
Distributed storage with Sheepdog
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © kateleigh, 123RF.com
.snap s ntestvm1.img 5 8.0 GB 292 MB 2.4 GB 2014-03-01 11:42 982a3a 2 mar.snap s ntestvm1.img 6 8.0 GB 128 MB 2.6 GB 2014-03-10 19:48 982a3b 2 mar2.snap ntestvm1.img 0 8.0 GB
29%
New features in PHP 7.3
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © MIR, Fotolia.com
, PHP programmers should now use the mb_ereg_ functions. When accessing ODBC and DB2 databases via the PDO_ODBC driver, the pdo_odbc.db2_instance_name setting is history. Expired Support for PHP 5.6
29%
Even benchmarks can be easy to handle
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
to 100% of its capacity on a single metric. This simple, easily understood measurement is remarkably portable across machines and nearly foolproof. If used correctly, single-metric benchmarks are a quick

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