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13.12.2018
(USB 2), and a Samsung Fit Plus 32 (USB 3).
Disk Caches
The OS is not the only player in the caching business. Examining a Samsung 750 SATA SSD drive, you cannot but notice a 256MB RAM buffer [8 ... 48
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13.12.2018
In previous articles, I examined some fundamental tools for HPC systems, including pdsh [1] (parallel shells), Lmod environment modules [2], and shared storage with NFS and SSHFS [3]. One remaining ... 48
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04.12.2024
Rubén Llorente ... "webservice" {
21 listen on 192.168.3.30 port 80
22 protocol "http"
23 forward to port 80 mode loadbalance \
24 check http "/index.html" code 200
25 }
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15.02.2013
(which is 2 multiplied 57,885,161 times, minus one) consists of 17,425,170 digits and was discovered on Dr. Curtis Cooper’s computer at the University of Central Missouri. According to the announcement ...
The 48th known Mersenne prime destroys previous record of 12,978,189 digits.
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27.08.2014
record size, (2) sequential read testing with 1MB record size, and (3) random write and read (4KB). In running these tests, I wanted to see what block layer information ioprof revealed.
The system I
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18.07.2013
buffered disk reads: 616 MB in
3.00 seconds = 205.03 MB/sec
$ hdparm -T /dev/sda
/dev/sda:
Timing cached reads: 6292 MB in
2.00 seconds = 3153.09 MB/sec
If this were a spinning disk, you would also
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15.02.2012
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26.01.2012
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07.10.2014
.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
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03.02.2022
] device to store /var/log, offloading the primary source of boot-time writes from the physical device to a 50MB RAM drive.
Figure 3: Three zram partitions
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