Bug 1857113
| Summary: | screen suffers from a performance issue caused by RLIMIT64 | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | customercare | ||||
| Component: | screen | Assignee: | Vaclav Dolezal <vdolezal> | ||||
| Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | urgent | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 31 | CC: | jridky, lnykryn, ofalk, phracek, vdolezal | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2020-11-03 20:24:04 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
|
||||||
I can confirm this behaviour on F31 with screen 4.6. However, with screen 4.8 (already in Rawhide), this doesn't happen any longer. This message is a reminder that Fedora 31 is nearing its end of life. Fedora will stop maintaining and issuing updates for Fedora 31 on 2020-11-24. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '31'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 31 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. *** This bug has been marked as a duplicate of bug 1852460 *** |
Created attachment 1701156 [details] strace of screen Description of problem: if screen is run, it takes a long time to start, because it closes 512*1024 filehandles it never opened. It's caused by the RLIMIT_NOFILE, set by systemd. rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 prlimit64(0, RLIMIT_NOFILE, NULL, {rlim_cur=1024, rlim_max=512*1024}) = 0 close(524287) = -1 EBADF (Ungültiger Dateideskriptor) close(524286) = -1 EBADF (Ungültiger Dateideskriptor) close(524285) = -1 EBADF (Ungültiger Dateideskriptor) close(524284) = -1 EBADF (Ungültiger Dateideskriptor) close(524283) = -1 EBADF (Ungültiger Dateideskriptor) close(524282) = -1 EBADF (Ungültiger Dateideskriptor) close(524281) = -1 EBADF (Ungültiger Dateideskriptor) close(524280) = -1 EBADF (Ungültiger Dateideskriptor) close(524279) = -1 EBADF (Ungültiger Dateideskriptor) ... See the other bugreport for more details. A fixed version is needed ASAP and a detailed analyses how this bug got implemented would be helpfull, as other apps are affected by this too. A discussion on FEDDEV ML is required in my eyes to check any other app for this bug. Version-Release number of selected component (if applicable): screen-4.6.2-9 How reproducible: 100% Steps to Reproduce: as root: strace -e close screen Actual results: 512*1024 close() on non existing filedescriptors Expected results: 0 close() on non existing filedescriptors Additional info: