Aktuelle Version vom 14. Oktober 2017, 16:53 Uhr

Anlegen von Control Groups

cgcreate -g cpu:/cpulimited
cgcreate -g cpu:/lesscpulimited

Welche Parameter sind vorhanden

cgget -g cpu /cpulimited

/cpulimited:
cpu.shares: 1024
cpu.cfs_quota_us: -1
cpu.stat: nr_periods 0
	nr_throttled 0
	throttled_time 0
cpu.cfs_period_us: 100000

cgget -g cpu /lesscpulimited

/lesscpulimited:
cpu.shares: 1024
cpu.cfs_quota_us: -1
cpu.stat: nr_periods 0
	nr_throttled 0
	throttled_time 0
cpu.cfs_period_us: 100000

cpu.shares auf 512 in den cpulimited group

Normaler Wert ist 1024

cgset -r cpu.shares=512 cpulimited

Testprogramm

apt install mathomatic-primes

3 Limitierte Prozesse und einen Unlimitierten starten

cgexec -g cpu:cpulimited matho-primes 0 9999999999 > /dev/null
cgexec -g cpu:cpulimited matho-primes 0 9999999999 > /dev/null
cgexec -g cpu:cpulimited matho-primes 0 9999999999 > /dev/null
cgexec -g cpu:lesscpulimited matho-primes 0 9999999999 > /dev/null

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@@ Zeile 1: / Zeile 1: @@
-=Anlegen einer Control Group=
+=Anlegen von Control Groups=
-*cgcreate -g blkio:/mygroup
+*cgcreate -g cpu:/cpulimited
+*cgcreate -g cpu:/lesscpulimited
-=Checken=
+=Welche Parameter sind vorhanden=
-*lscgroup | grep blkio:/dd
+*cgget -g cpu /cpulimited
- blkio:/dd
+<pre>
+/cpulimited:
-=Welche Parameter sind Subsystem Block-I/O vorhanden=
+cpu.shares: 1024
-*cgget -g blkio  /mygroup
+cpu.cfs_quota_us: -1
+cpu.stat: nr_periods 0
+	nr_throttled 0
+	throttled_time 0
+cpu.cfs_period_us: 100000
+</pre>
+*cgget -g cpu /lesscpulimited
 <pre>
-/mygroup:
+/lesscpulimited:
-blkio.throttle.io_serviced: Total 0
+cpu.shares: 1024
-blkio.io_service_bytes_recursive: Total 0
+cpu.cfs_quota_us: -1
-blkio.io_serviced_recursive: Total 0
+cpu.stat: nr_periods 0
-blkio.time:
+	nr_throttled 0
-blkio.io_serviced: Total 0
+	throttled_time 0
-blkio.reset_stats:
+cpu.cfs_period_us: 100000
-blkio.io_wait_time: Total 0
-blkio.weight: 500
-blkio.leaf_weight_device:
-blkio.throttle.read_iops_device:
-blkio.io_merged_recursive: Total 0
-blkio.throttle.write_bps_device:
-blkio.leaf_weight: 500
-blkio.sectors_recursive:
-blkio.weight_device:
-blkio.io_service_time_recursive: Total 0
-blkio.throttle.write_iops_device:
-blkio.throttle.io_service_bytes: Total 0
-blkio.io_service_bytes: Total 0
-blkio.io_wait_time_recursive: Total 0
-blkio.io_service_time: Total 0
-blkio.time_recursive:
-blkio.io_merged: Total 0
-blkio.throttle.read_bps_device:
-blkio.sectors:
-blkio.io_queued: Total 0
-blkio.io_queued_recursive: Total 0
 </pre>
-=Geschwindigkeit einschränken=
+=cpu.shares auf 512 in den cpulimited group=
-*echo "8:16 1048576" > /sys/fs/cgroup/blkio/mygroup/blkio.throttle.write_bps_device
+Normaler Wert ist 1024
+*cgset -r cpu.shares=512 cpulimited
+=Testprogramm=
+*apt install mathomatic-primes
+=3 Limitierte Prozesse und einen Unlimitierten starten=
+*cgexec -g cpu:cpulimited matho-primes 0 9999999999 > /dev/null
+*cgexec -g cpu:cpulimited matho-primes 0 9999999999 > /dev/null
+*cgexec -g cpu:cpulimited matho-primes 0 9999999999 > /dev/null
+*cgexec -g cpu:lesscpulimited matho-primes 0 9999999999 > /dev/null
-=Ohne Einschränkung=
+=Top=
-*dd if=/dev/zero of=/tmp/test count=50 bs=100M
+*top
-+0 records in
+[[Datei:cgroup-1.png|600px]]
-+0 records out
- 5242880000 bytes (5.2 GB, 4.9 GiB) copied, 23.0043 s, 228 MB/s
-=Mit Einschränkung(Funktioniert nicht wie gewünscht)=
-*cgexec -g blkio:/mygroup dd if=/dev/zero of=/tmp/test count=50 bs=100M

Cgroups-cpu: Unterschied zwischen den Versionen

Aktuelle Version vom 14. Oktober 2017, 16:53 Uhr

Inhaltsverzeichnis

Anlegen von Control Groups

Welche Parameter sind vorhanden

cpu.shares auf 512 in den cpulimited group

Testprogramm

3 Limitierte Prozesse und einen Unlimitierten starten

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