Bug 35032
Summary: | __alloc_pages: 1-order allocation failed. | ||
---|---|---|---|
Product: | [Retired] Red Hat Linux | Reporter: | Need Real Name <edmilhomme> |
Component: | kernel | Assignee: | Arjan van de Ven <arjanv> |
Status: | CLOSED CURRENTRELEASE | QA Contact: | Brock Organ <borgan> |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 7.1 | CC: | dnielsen, edmilhomme |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | i386 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2003-06-06 00:14:33 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: |
Description
Need Real Name
2001-04-06 15:31:51 UTC
Please retry with our 2.4.2-0.1.49 kernel as is available in rawhide. There are several (eg dozens) VM related bugs fixed in that. Actually, I have tried it on the following releases with the same results: redhat 6.2 and redhat 7.0 with kernel version 2.4.0 -> 2.4.3-pre5 Where can I obtain a copy of 2.4.2-0.1.49 and is it part of a distribution? It appears that this problem was introduced in open source kernel 2.4.0. I have seen a comment by Alan Cox stating that "The 2.4 VM is currently too broken to survive high I/O benchmark tests without going silly". Has Redhat done anything to the vm subsystem to alleviate the 1-order allocation failed problem? thanks Ed The Rawhide part of our ftp site has the 2.4.2-XXX kernel RPMs. Yes we have patches in our kernel to improve the VM performance/behaviour, however, there is still room for improvement. Hi, I have been unable to locate version 2.4.2-0.1.49 on RedHat's ftp site. could you please prove me with a pointer? thanks Ed As 7.1 is now released, you should get that kernel, 2.4.2-2 It seems that my original reported problem still exists in 7.1 kernel 2.4.2-2 and will probably exist until the Linux community fixes the problem. Thanks for the help. Kernel 2.4.2-2 should be mostly ok. Having said that, we fixed an algorithm-bug in the VM last week and a kernel with that fix is on its way to rawhide. (eg basic QA and such). Do you know of any "benchmark"-like program that we can use this to reproduce the problem? (eg a more-or-less standalone program that we can add to our testsuites) Basically, any fork bomb process will create the problem. Create a process that recursively spawns copies of itself. Under kernel version 2.2 the system would slow way down, but under kernel version 2.4 the system hangs. By hang I mean, you can't log in and kill the process. To create a login process, you need 2 consecutive pages and since there are no consecutive pages you can't log in, hence the system appears to be hung. I'm running 7.1 w/2.4.2-2. Running: ./tiotest -f 500 -b 8192 -d /diskb -t 10 I get the same errors. Is there a fix yet? /var/log/messages ************************** May 17 10:46:45 localhost kernel: __alloc_pages: 0-order allocation failed. May 17 10:47:48 localhost last message repeated 777 times May 17 10:48:52 localhost last message repeated 34 times May 17 10:50:33 localhost last message repeated 67 times May 17 10:52:22 localhost last message repeated 34 times May 17 10:53:46 localhost last message repeated 33 times May 17 10:55:18 localhost last message repeated 67 times May 17 10:57:53 localhost last message repeated 46 times May 17 10:57:55 localhost last message repeated 12 times May 17 10:58:16 localhost kernel: failed. May 17 10:58:16 localhost kernel: __alloc_pages: 0-order allocation failed. May 17 10:58:49 localhost last message repeated 324 times May 17 11:00:28 localhost last message repeated 586 times May 17 11:02:04 localhost last message repeated 67 times May 17 11:03:50 localhost last message repeated 66 times May 17 11:04:49 localhost last message repeated 276 times May 17 11:05:15 localhost last message repeated 154 times May 17 11:06:50 localhost last message repeated 390 times ******************************* tiotest available @ http://www.iki.fi/miku/tiotest dnielsen.com: Those are warnings not errors. Also, could you please try kernel 2.4.3-5 available from rawhide? We are continuesly improving the VM, and would be very interested in feedback from others. I use tiobench myself on a regular basis and don't see this message.. |