22%
17.12.2014
need a simple tool to help you understand what’s happening on the nodes.
... performance from many perspectives (i.e., CPU, network, disk). The tool is called nmon
.
Nmon Overview
Nmon is short for “Nigel’s Monitor” and is a command-line tool that presents performance information ... need a simple tool to help you understand what’s happening on the nodes.
22%
30.11.2025
Commands = -f /var/log/collectl -r00:00,7 -m -F60 -s+YZCD --iosize
These options allow me to monitor CPU, disk, and network in brief mode and slab, processes, and disk in detailed mode. I also added the ability
22%
01.08.2012
-------------------------------------------------------------------------------------------------------------------------------------
Total 1.1 MB/s | 11 MB 00:10
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
22%
05.09.2011
can see how the arp cache poisoning works:
$ sudo nemesis arp -v -r -d eth0 -S 192.168.1.2 \
-D 192.168.1.133 -h 00:22:6E:71:04:BB -m 00:0C:29:B2:78:9E \
-H 00:22:6E:71:04:BB -M 00:0C:29:B2:78:9E
22%
15.08.2016
-> ../../devices/pci0000:00/0000:00:03.0/net/eth0
|---lo -> ../../devices/virtual/net/lo
The device is no longer listed in the default namespace.
Listing 3
Configuring Devices
$ ip link set eth1
22%
28.11.2022
, 133M issued at 133M/s, 81.6M total
0B repaired, 163.06% done, no estimated completion time
scan: resilvered (draid1:3d:5c:1s-0) 20.2M in 00:00:00 with 0 errors on Mon Oct 24 17:11:22 2022
22%
22.06.2012
: Qmail Delivery Retry Events
Delivery Attempt
Seconds
D-HH:MM:SS
1
0
0-00:00:00
2
400
0-00:06:40
3
1600
0-00:26:40
4
22%
27.08.2014
was the sequential write test using 1MB record sizes:
./iozone -i 0 -c -e -w -r 1024k -s 32g -t 2 -+n > iozone_write_1.out
To gather the block statistics, I ran ioprof in a different terminal window before I ran
22%
24.02.2022
.22 1835.22 0.00 28.68 28.68 28.68 0.00 11.15941 NA NA 0 4 1 1 1 0 1 0 0 1 5368709120 67108864 20480.0
22%
07.04.2022
:
Operation Max(MiB) Min(MiB) Mean(MiB) StdDev Max(OPs) Min(OPs) Mean(OPs) ...
... write 1835.22 1835.22 1835.22 0.00 28.68 28.68 28.68
**
... StdDev Mean(s
