after killing or crash jobs the restarts all run on 1 core
I am running ubuntu 18.04 on an AMD Ryzen
When I first boot the machine and run multiple big jobs they each run on their processor and top shows about 100% cpu for both jobs. This is generally 2-3 jobs which use about 2.3BG each.
vendor_id : AuthenticAMD
cpu family : 23
model : 8
model name : AMD Ryzen 7 2700X Eight-Core Processor
stepping : 2
microcode : 0x8008206
cpu MHz : 4244.445
cache size : 512 KB
When I Restart a job I now notice (this may be new behavior) that the restarted job only runs on the same core as the old so that top reports about 50% cpu usage for each job. top 1 shows that only one core is very active (almost 100% resting for the other cores). Any ideas what is going on? Thanks.
cpu
asked Jan 29 at 19:49
dave fournierdave fournier
1062
add a comment |
I am running ubuntu 18.04 on an AMD Ryzen
When I first boot the machine and run multiple big jobs they each run on their processor and top shows about 100% cpu for both jobs. This is generally 2-3 jobs which use about 2.3BG each.
vendor_id : AuthenticAMD
cpu family : 23
model : 8
model name : AMD Ryzen 7 2700X Eight-Core Processor
stepping : 2
microcode : 0x8008206
cpu MHz : 4244.445
cache size : 512 KB
When I Restart a job I now notice (this may be new behavior) that the restarted job only runs on the same core as the old so that top reports about 50% cpu usage for each job. top 1 shows that only one core is very active (almost 100% resting for the other cores). Any ideas what is going on? Thanks.
cpu
asked Jan 29 at 19:49
dave fournierdave fournier
1062
there is a command called taskset which can be used to change the affinity of a job for a particular processor. That seems to do the job for me.
– dave fournier
Feb 2 at 1:32
add a comment |
I am running ubuntu 18.04 on an AMD Ryzen
When I first boot the machine and run multiple big jobs they each run on their processor and top shows about 100% cpu for both jobs. This is generally 2-3 jobs which use about 2.3BG each.
vendor_id : AuthenticAMD
cpu family : 23
model : 8
model name : AMD Ryzen 7 2700X Eight-Core Processor
stepping : 2
microcode : 0x8008206
cpu MHz : 4244.445
cache size : 512 KB
When I Restart a job I now notice (this may be new behavior) that the restarted job only runs on the same core as the old so that top reports about 50% cpu usage for each job. top 1 shows that only one core is very active (almost 100% resting for the other cores). Any ideas what is going on? Thanks.
cpu
asked Jan 29 at 19:49
dave fournierdave fournier
1062
I am running ubuntu 18.04 on an AMD Ryzen
When I first boot the machine and run multiple big jobs they each run on their processor and top shows about 100% cpu for both jobs. This is generally 2-3 jobs which use about 2.3BG each.
vendor_id : AuthenticAMD
cpu family : 23
model : 8
model name : AMD Ryzen 7 2700X Eight-Core Processor
stepping : 2
microcode : 0x8008206
cpu MHz : 4244.445
cache size : 512 KB
When I Restart a job I now notice (this may be new behavior) that the restarted job only runs on the same core as the old so that top reports about 50% cpu usage for each job. top 1 shows that only one core is very active (almost 100% resting for the other cores). Any ideas what is going on? Thanks.
cpu
cpu
asked Jan 29 at 19:49
dave fournierdave fournier
1062
asked Jan 29 at 19:49
dave fournierdave fournier
1062
edited Jan 29 at 19:59
dave fournier
asked Jan 29 at 19:49
dave fournierdave fournier
1062
asked Jan 29 at 19:49
dave fournierdave fournier
1062
asked Jan 29 at 19:49
dave fournierdave fournier
1062
1062
there is a command called taskset which can be used to change the affinity of a job for a particular processor. That seems to do the job for me.
– dave fournier
Feb 2 at 1:32
add a comment |
there is a command called taskset which can be used to change the affinity of a job for a particular processor. That seems to do the job for me.
– dave fournier
Feb 2 at 1:32
there is a command called taskset which can be used to change the affinity of a job for a particular processor. That seems to do the job for me.
– dave fournier
Feb 2 at 1:32
there is a command called taskset which can be used to change the affinity of a job for a particular processor. That seems to do the job for me.
– dave fournier
Feb 2 at 1:32
add a comment |
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there is a command called taskset which can be used to change the affinity of a job for a particular processor. That seems to do the job for me.
– dave fournier
Feb 2 at 1:32