New: linux is not able to handle more than ~4096 ipv6 addresses

Bugme-new Andrew Morton 2 participants 2 messages Feb 24, 2009 1 message not in the archive

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Andrew Morton

author

2009-02-24 19:51 UTC #1 lore raw

(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface).

Quoted 8 lines · On Tue, 24 Feb 2009 11:35:25 -0800 (PST) [email protected] wrote:

http://bugzilla.kernel.org/show_bug.cgi?id=12772

           Summary: linux is not able to handle more than ~4096 ipv6
                    addresses
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.26-1-amd64 #1 SMP Sat Jan 10 19:55:48 UTC 2009
                    x86_64 GNU/Li

That's a fairly old kernel.

Quoted 41 lines

Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: IPV6
AssignedTo: [email protected]
ReportedBy: [email protected]
Latest working kernel version: --
Earliest failing kernel version: --
Distribution: Debian sid
Hardware Environment: model name : Intel(R) Pentium(R) Dual CPU E2180 @
2.00GHz
Software Environment:
Problem Description:
Linux is unable to handle more than ~4096 ipv6 addresses and usually crashes after a not very long time. If not, it at least gets unusable slow.
Consider shared hosting environments, where you have some few thousand customers with a few domains each sitting on one box. You now would like to use ipv6 for greater fun with https and, for that, need about 6-30k addresses bound to the box.
Steps to reproduce:
#!/bin/bash
COUNTER=1
COUNTERR=1
while [ $COUNTERR -lt 9999 ]; do
        while [  $COUNTER -lt 9999 ]; do
                ip addr add 2001::$COUNTERR:$COUNTER/64 dev eth1
                let COUNTER=COUNTER+1
                echo $CONTERR $COUNTER
        done
let COUNTERR=COUNTER+1
done

Tobias Winter

2009-02-24 20:26 UTC #2 lore raw

Point taken. I just gave it a try with 2.6.29-rc6 and the problem persists.

Quoted 59 lines · Andrew Morton

(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface).
Quoted 8 lines · On Tue, 24 Feb 2009 11:35:25 -0800 (PST) [email protected] wrote:
http://bugzilla.kernel.org/show_bug.cgi?id=12772
           Summary: linux is not able to handle more than ~4096 ipv6
                    addresses
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.26-1-amd64 #1 SMP Sat Jan 10 19:55:48 UTC 2009
                    x86_64 GNU/Li
That's a fairly old kernel.
Quoted 41 lines
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: IPV6
AssignedTo: [email protected]
ReportedBy: [email protected]
Latest working kernel version: --
Earliest failing kernel version: --
Distribution: Debian sid
Hardware Environment: model name : Intel(R) Pentium(R) Dual CPU E2180 @
2.00GHz
Software Environment:
Problem Description:
Linux is unable to handle more than ~4096 ipv6 addresses and usually crashes after a not very long time. If not, it at least gets unusable slow.
Consider shared hosting environments, where you have some few thousand customers with a few domains each sitting on one box. You now would like to use ipv6 for greater fun with https and, for that, need about 6-30k addresses bound to the box.
Steps to reproduce:
#!/bin/bash
COUNTER=1
COUNTERR=1
while [ $COUNTERR -lt 9999 ]; do
        while [  $COUNTER -lt 9999 ]; do
                ip addr add 2001::$COUNTERR:$COUNTER/64 dev eth1
                let COUNTER=COUNTER+1
                echo $CONTERR $COUNTER
        done
let COUNTERR=COUNTER+1
done