[jira] [Commented] (TS-4958) Inconsistent advise flags on IO buffers

2016-10-12 Thread James Peach (JIRA) 

[ 
https://issues.apache.org/jira/browse/TS-4958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15569149#comment-15569149
 ] 

James Peach commented on TS-4958:
-

The latter. Freelists are only used for certain sizes, for example 
{{IOBufferData::alloc}}.

> Inconsistent advise flags on IO buffers
> ---
>
> Key: TS-4958
> URL: https://issues.apache.org/jira/browse/TS-4958
> Project: Traffic Server
>  Issue Type: Bug
>  Components: Core
>Reporter: James Peach
>Assignee: Phil Sorber
> Fix For: sometime
>
>
> IO buffers from the free list will get {{madvise}} flags applied, but those 
> from {{malloc}} don't. This probably contributes to memory region 
> fragmentation.



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[jira] [Commented] (TS-4958) Inconsistent advise flags on IO buffers

2016-10-12 Thread Phil Sorber (JIRA) 

[ 
https://issues.apache.org/jira/browse/TS-4958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15569137#comment-15569137
 ] 

Phil Sorber commented on TS-4958:
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[~jpe...@apache.org], I am confused by "memory region fragmentation." Isn't 
this the case where freelists are off? Or are you saying we use a combo of 
freelists and malloc during regular IOBuffer usage?

> Inconsistent advise flags on IO buffers
> ---
>
> Key: TS-4958
> URL: https://issues.apache.org/jira/browse/TS-4958
> Project: Traffic Server
>  Issue Type: Bug
>  Components: Core
>Reporter: James Peach
>Assignee: Phil Sorber
> Fix For: sometime
>
>
> IO buffers from the free list will get {{madvise}} flags applied, but those 
> from {{malloc}} don't. This probably contributes to memory region 
> fragmentation.



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[jira] [Commented] (TS-4958) Inconsistent advise flags on IO buffers.

2016-10-12 Thread James Peach (JIRA) 

[ 
https://issues.apache.org/jira/browse/TS-4958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15568873#comment-15568873
 ] 

James Peach commented on TS-4958:
-

Ping [~jrushford] [~psudaemon]

> Inconsistent advise flags on IO buffers.
> 
>
> Key: TS-4958
> URL: https://issues.apache.org/jira/browse/TS-4958
> Project: Traffic Server
>  Issue Type: Bug
>  Components: Core
>Reporter: James Peach
>
> IO buffers from the free list will get {{madvise}} flags applied, but those 
> from {{malloc}} don't. This probably contributes to memory region 
> fragmentation.



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