23%
21.08.2012
/primary_db | 4.6 MB 00:02
rpmforge | 1.9 kB 00:00
sl
22%
16.03.2021
B/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=0/0, aggrticks=12
21%
25.03.2021
/md0
/dev/md0:
Version : 1.2
Creation Time : Sat Jan 9 16:36:18 2021
Raid Level : raid1
Array Size : 2094080 (2045.00 MiB 2144.34 MB)
Used Dev Size : 2094080 (2045.00
20%
01.08.2012
| 4.3 MB 00:02
(2/2): nss-softokn-freebl-3.12.9-11.el6.i686.rpm | 115 kB 00:00
20%
02.08.2021
.31 0.05
sdd 1.42 0.00 50.96 0.00 0.00 0.00 0.00 0.00 0.44 0.00 0.00 35.83 0.00 0.38 0.05
md0 12.43 12.17 54.39 48.68 0.00
20%
12.05.2021
.
Listing 6: iostat
Output
$ iostat -x -d 2 -c
Linux 5.4.12-050412-generic (dev-machine) 03/14/2021 _x86_64_ (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
0.79 0.07 1.19 2.89 0.00
19%
26.01.2012
32KB < < 128KB
64
128KB < < 256KB
0
256KB < < 512KB
2
512KB < < 1MB
3
1MB < < 10MB
87
10MB < < 100MB
0
100MB < < 1GB
19%
15.02.2012
32KB < < 128KB
64
128KB < < 256KB
0
256KB < < 512KB
2
512KB < < 1MB
3
1MB < < 10MB
87
10MB < < 100MB
0
100MB < < 1GB
19%
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
19%
21.08.2012
| 119 kB 00:00
(6/19): glib2-2.22.5-6.el6.i686.rpm | 1.1 MB 00:00
(7/19): libX11-1.3-2.el6.i686.rpm
