lkml.org 
[lkml]   [1998]   [Jun]   [16]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
FromPerry Harrington <>
SubjectRe: e2fs + large disk == slug?
DateSun, 14 Jun 1998 10:30:59 -0700 (PDT)
> 
> 
>    On Mon, 15 Jun 1998, Mark Lehrer wrote:
> 
>    > I am not a filesystem expert, but I would like to understand what
>    > makes e2fs slow on my 4.5 gig partition; and if someone is working on
>    > performance and would like some help, please holler.  Some slow
>    > operations, kernel 2.0.34:
>    > 
>    > 1) removing 500 megs of files took 30 seconds.
> 
>    This will be just as slow on a 600M filesystem...
>    If there are a lot of files, it's going to take a rather
>    long time to remove them. (Just try this under Windows:)
> 
> On my 120mhz HP-UX system this same operation on the same set of files
> with the same model disk drive only takes a few seconds; whereas with
> my 200MHz PPro Linux system it takes five to ten times as long...
> 
> Is it possible to optimize this?

Try turning on noatime and nodiratime, for every read of the directory, it
hits the disk.  

> 
>    > 2) fsck of course.
> 
>    Fsck takes extremely long because it has to cross-reference
>    all the inode and directory data...
> 
> Yes, this is probably unavoidable...
> 
> Thanks,
> Mark
> 

-- 
Perry Harrington       Linux rules all OSes.    APSoft      ()
email: perry@apsoft.com 			Think Blue. /\

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu

\
 
 \ /
  Last update: 2005-03-22 12:43    [from the cache]
©2003-2008