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Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file times

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From: Miklos Szeredi <miklos@...>
To: <salikhmetov@...>
Cc: <linux-mm@...>, <jakob@...>, <linux-kernel@...>, <valdis.kletnieks@...>, <riel@...>, <ksm@...>, <staubach@...>, <jesper.juhl@...>, <torvalds@...>, <a.p.zijlstra@...>, <akpm@...>, <protasnb@...>, <miklos@...>, <r.e.wolff@...>, <hidave.darkstar@...>, <hch@...>
Subject: Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file times
Date: Friday, January 18, 2008 - 5:40 am

> 4. Performance test was done using the program available from the

Could you also test with ext4 and post some numbers?  Afaik, ext4 uses
nanosecond timestamps, so the time updating code would be exercised
more during the page faults.

What about performance impact on msync(MS_ASYNC)?  Could you please do
some measurment of that as well?

Thanks,
Miklos

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Messages in current thread:
[PATCH -v6 0/2] Fixing the issue with memory-mapped file times, Anton Salikhmetov, (Thu Jan 17, 6:31 pm)
Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file..., Miklos Szeredi, (Fri Jan 18, 5:40 am)
Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file..., Anton Salikhmetov, (Fri Jan 18, 3:48 pm)
Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file..., Miklos Szeredi, (Sat Jan 19, 6:45 am)
Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file..., Anton Salikhmetov, (Fri Jan 18, 6:31 am)
[PATCH -v6 2/2] Updating ctime and mtime for memory-mapped f..., Anton Salikhmetov, (Thu Jan 17, 6:31 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 5:51 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Peter Zijlstra, (Fri Jan 18, 6:15 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 6:38 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Peter Zijlstra, (Fri Jan 18, 7:00 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 7:17 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Peter Zijlstra, (Fri Jan 18, 7:23 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 7:36 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Peter Zijlstra, (Fri Jan 18, 6:25 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 1:58 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 2:11 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 2:43 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 2:57 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 3:08 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 3:22 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 3:35 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Ingo Oeser, (Fri Jan 18, 6:32 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 6:47 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Peter Staubach, (Mon Jan 21, 10:25 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Mon Jan 21, 10:36 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Rik van Riel, (Fri Jan 18, 6:54 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Matt Mackall, (Fri Jan 18, 8:50 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Sat Jan 19, 6:22 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Matt Mackall, (Sat Jan 19, 11:49 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Rik van Riel, (Sat Jan 19, 12:25 am)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Fri Jan 18, 3:58 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 4:22 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Fri Jan 18, 5:03 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 5:27 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Fri Jan 18, 6:04 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Linus Torvalds, (Fri Jan 18, 6:21 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Fri Jan 18, 6:35 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Rik van Riel, (Fri Jan 18, 2:28 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Miklos Szeredi, (Fri Jan 18, 2:51 pm)
Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapp..., Anton Salikhmetov, (Fri Jan 18, 6:39 am)
[PATCH -v6 1/2] Massive code cleanup of sys_msync(), Anton Salikhmetov, (Thu Jan 17, 6:31 pm)
Re: [PATCH -v6 1/2] Massive code cleanup of sys_msync(), Miklos Szeredi, (Fri Jan 18, 5:33 am)
Re: [PATCH -v6 1/2] Massive code cleanup of sys_msync(), Anton Salikhmetov, (Fri Jan 18, 6:30 am)