Re: [Libhugetlbfs-devel] [PATCH] Recover gracefully when ELF remapping fails due to insufficient hugepages

2008-09-08 Thread David Gibson
On Mon, Sep 08, 2008 at 01:47:05PM -0500, Adam Litke wrote: > On Mon, 2008-09-08 at 17:24 +0100, Mel Gorman wrote: > > When remapping text or data, segments are prepared in a child process and > > later remapped. The status code from the segment preparation is not checked > > and in the event of fa

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Re: [Libhugetlbfs-devel] [PATCH] Allow user to specify that hugepages must be used when requested

2008-09-08 Thread Mel Gorman
On (08/09/08 14:05), Adam Litke didst pronounce: > On Mon, 2008-09-08 at 17:33 +0100, Mel Gorman wrote: > > By default, libhugetlbfs will fall back to using base pages when huge pages > > are not available. In some situations such as benchmarking this may not be > > desirable as the user would be u

[Libhugetlbfs-devel] [RFD] hugecfg: Proposed scope and interfaces

2008-09-08 Thread Adam Litke
With the arrival of recent kernel features (namely the dynamic pool and multiple huge page sizes), comes increased configuration complexity. To ease configuration for users, libhugetlbfs should provide a set of library interfaces and a configuration program (hugecfg) so that the system's hugetlb c

Re: [Libhugetlbfs-devel] [PATCH] Allow user to specify that hugepages must be used when requested

2008-09-08 Thread Adam Litke
On Mon, 2008-09-08 at 17:33 +0100, Mel Gorman wrote: > By default, libhugetlbfs will fall back to using base pages when huge pages > are not available. In some situations such as benchmarking this may not be > desirable as the user would be using base pages when they believed huge > pages were in u

Re: [Libhugetlbfs-devel] [PATCH] Recover gracefully when ELF remapping fails due to insufficient hugepages

2008-09-08 Thread Adam Litke
On Mon, 2008-09-08 at 17:24 +0100, Mel Gorman wrote: > When remapping text or data, segments are prepared in a child process and > later remapped. The status code from the segment preparation is not checked > and in the event of failure to copy text or data, the main process gets killed > later whe

[Libhugetlbfs-devel] [PATCH] Allow user to specify that hugepages must be used when requested

2008-09-08 Thread Mel Gorman
By default, libhugetlbfs will fall back to using base pages when huge pages are not available. In some situations such as benchmarking this may not be desirable as the user would be using base pages when they believed huge pages were in use. This patch enables the user to specify that hugepages mus

[Libhugetlbfs-devel] [PATCH] Recover gracefully when ELF remapping fails due to insufficient hugepages

2008-09-08 Thread Mel Gorman
When remapping text or data, segments are prepared in a child process and later remapped. The status code from the segment preparation is not checked and in the event of failure to copy text or data, the main process gets killed later when it remaps a useless segment with no data. This patch checks