Re: Slowdown is gone & apt-get works with updated reiser4. So nevermind...

[Hans Reiser <reiser@namesys.com>]

John Gilmore wrote:

>On Saturday 12 November 2005 06:38, Hans Reiser wrote:
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>>Being seamless, cleanly implemented, and requiring little or no admin
>>work, matters a lot to end users.
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>Amen, Brother!
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>>Yes, users can do what you said with rsync, but it is important that it
>>be no more work than specifying a --use-versioning mount option, and
>>even that is beyond most users (but that is where defaults come in to
>>help them).
>>
>>The namespace for the past versions should be as cleanly done as WAFL
>>does them.  Whether space gets freed automatically when space gets <10%
>>is another mount option.  Where we might do better than WAFL is in
>>allowing touching filename/..../checkin to cause a version to get
>>recorded, rather than doing it at particular times.
>>
>>Hans
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>Of particular concern is that the name space should (somehow) 
>
somehow = filename/versions/version_number and ls -l filename/versions ?

>allow me to 
>easily grab version by date, even if the file hadn't changed for the two 
>weeks before that, and in fact still hasn't changed... Make it really easy to 
>grab all or some files by wildcard and with a specific revision, even when 
>not every file changed with that revision.
>
>Oh, BTW. "The slowdown" as I called it is still there. I guess I spoke to 
>soon. The specific symptom is that the effected process locks for a time, 
>usually just a second or two, but sometimes a minute or two and and at least 
>once for many many minutes. I think that the crash (soft lockup) that I 
>reported earlier is related as well. And it sounds like the comment that 
>rvalles had about lockups with mmaped files, except that it doesn't lock up 
>permanently. Just for a second or three usually.
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zam, please comment.

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