groupadd, useradd, etc
Bill Gradwohl
bill at ycc.com
Thu Feb 17 14:48:06 UTC 2005
Mogens Kjaer wrote:
> Can you run
> strace groupadd xyz
> and get an idea what takes so long time?
I ran:
strace groupadd xyz 2>straceout
I looked at the file straceout and then did:
grep -v mremap straceout >noremap
root at s2 ~# ll straceout noremap
-rw-r--r-- 1 root root 6281700 Feb 17 08:40 noremap
-rw-r--r-- 1 root root 169173793 Feb 17 08:31 straceout
The straceout file is chock full of these lines where the center
numerics change every so often:
mremap(0xb7d87000, 147456, 147456, MREMAP_MAYMOVE) = 0xb7d87000
mremap(0xb7d87000, 147456, 147456, MREMAP_MAYMOVE) = 0xb7d87000
mremap(0xb7d87000, 147456, 147456, MREMAP_MAYMOVE) = 0xb7d87000
mremap(0xb7d87000, 147456, 147456, MREMAP_MAYMOVE) = 0xb7d87000
mremap(0xb7d87000, 147456, 147456, MREMAP_MAYMOVE) = 0xb7d87000
mremap(0xb7d87000, 147456, 147456, MREMAP_MAYMOVE) = 0xb7d87000
mremap(0xb7d87000, 147456, 147456, MREMAP_MAYMOVE) = 0xb7d87000
mremap(0xb7d87000, 147456, 147456, MREMAP_MAYMOVE) = 0xb7d87000
The difference in size between straceout and noremap is how much mremap
output there is.
Is this remaping RAM?
--
Bill Gradwohl
bill at ycc.com
http://www.ycc.com
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