Bug 154022
| Summary: | On 2.4.21 based kernels, /proc/pid doesn't include the consolidated resource utilization of the threads it has created. | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Amanulla <amanulla> |
| Component: | kernel | Assignee: | Ingo Molnar <mingo> |
| Status: | CLOSED WONTFIX | QA Contact: | Brian Brock <bbrock> |
| Severity: | high | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3.0 | CC: | jbaron, petrides, riel, vanhoof |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | noarch | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2007-10-19 19:05:15 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 184345 | ||
Could you please let me know what additional info is required? Thanks & Regards, Amanulla This bug is filed against RHEL 3, which is in maintenance phase. During the maintenance phase, only security errata and select mission critical bug fixes will be released for enterprise products. Since this bug does not meet that criteria, it is now being closed. For more information of the RHEL errata support policy, please visit: http://www.redhat.com/security/updates/errata/ If you feel this bug is indeed mission critical, please contact your support representative. You may be asked to provide detailed information on how this bug is affecting you. |
Description of problem: On 2.4.21 based kernels, /proc/pid doesn't include the consolidated resource utilization of the threads it has created. On 2.4.21 based kernels /proc has got hidden directories which has got the thread related statistics. 1) /proc/pid reflects resource usage of the process 2) /proc/.pid (I Was referring to this as a thread ID). Kernel stores thread resource utilization under this directory. The resource utilization (say cpu utilization) statistics under /proc/pid doesn't include resource utilization of threads which that process has created. I have checked with 'linux-kernel.org' group, they have replied that this is a vendor specific issue. I would like to know if this has been already fixed in later versions of the kernel. Version-Release number of selected component (if applicable): Linux 2.4.21-4.EL How reproducible: Run a multi threaded process and check CPU/memory/disk utilization of process and we can see that the statistics do not include the CPU/memory/disk utilization of the threads it has created. Steps to Reproduce: 1. Run a process which creates threads. 2. Check the resource utilization provided under /proc/pid 3. Statistics under /proc/pid doesn't reflect /proc/.<tid> Actual results: Statistics under /proc/pid don't include thread resource utilization of the threads it has created. Expected results: Statistics under /proc/pid should include thread resource utilization also. Additional info: Assume we have a process with pid = 1234 And this process creates two threads with thread IDs 1235 & 1236. We have three entries a) /proc/1234 b) /proc/.1235 c) /proc/.1236 The statistics under /proc/1234 don't include resource utilization of threads 1235 & 1236.