38%
25.02.2013
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
38%
02.08.2021
_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 077 063 --- Pre-fail Always - 56770409
3 Spin_Up_Time 0x0003
36%
18.07.2013
mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
32 Cycle time: min=120ns recommended=120ns
33 PIO: pio0 pio1 pio2 pio3 pio4
34 Cycle time: no flow control=120
36%
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
36%
16.03.2021
.4MBps and random reads 1.9MBps. The good news is that whereas random writes dropped a tiny bit to 1.2MBps (Listing 6), random reads increased to almost double the throughput with a rate of 3.3MBps
35%
26.02.2014
reqs merged: 3.78/s Write reqs completed: 2.10/s
Read BW: 0.00 MB/s Write BW: 0.02 MB/s
Avg sector size issued 23.78 Avg
35%
11.02.2016
553200 0 22908 348 23076 1143 2880 6 3 57 35 0 <- < I/O System loaded (wa) >
0 3 265376 149720 1136 378148 0 105300 252 105348 993 3002 6 4 62 29 0
0 14 495028 117264 560
35%
02.08.2021
the configuration and capabilities of memory DIMMs and revealed that my system has four DDR3 RAM devices of 2048MB configured at speeds of 1333MTps (mega transfers per second).
Playing with RAM Drives
To begin, you
34%
04.06.2013
FLOPS.
This gigantic HPC system, which is called the Tianhe-2 (TH-2) or the Milky Way-2 supercomputer, comes with 32,000 Intel Ivy Bridge Xeon sockets and 48,000 Xeon Phi coprocessors for a total of 3,120,000 cores
34%
11.04.2016
(512 MB) copied, 49.1424 s, 10.4 MB/s
If you want to empty the read and write cache for benchmark purposes, you can do so using:
sync; echo 3 > /proc/sys/vm/drop_caches
Sequential access
