Re: kern/38374: fdfile leak

[yamt%mwd.biglobe.ne.jp@localhost (YAMAMOTO Takashi)]

The following reply was made to PR kern/38374; it has been noted by GNATS.

From: yamt%mwd.biglobe.ne.jp@localhost (YAMAMOTO Takashi)
To: gnats-bugs%NetBSD.org@localhost
Cc: ad%NetBSD.org@localhost, gnats-admin%netbsd.org@localhost, 
netbsd-bugs%netbsd.org@localhost,
        ad%netbsd.org@localhost
Subject: Re: kern/38374: fdfile leak
Date: Wed,  9 Apr 2008 07:50:33 +0900 (JST)

 > The following reply was made to PR kern/38374; it has been noted by GNATS.
 > 
 > From: Thomas Klausner <wiz%NetBSD.org@localhost>
 > To: gnats-bugs%NetBSD.org@localhost
 > Cc: yamt%NetBSD.org@localhost
 > Subject: Re: kern/38374: fdfile leak
 > Date: Tue, 8 Apr 2008 23:24:32 +0200
 > 
 >  Greg suggests I add the following information to the PR.
 >  
 >  With the bulk build interrupted (CTRL-Z) and only a few userland
 >  programs running (terminals, X server, screen, amarok),
 >  # vmstat -m | grep fdfile && fstat | wc
 >  says:
 >  vmstat: Kmem statistics are not being gathered by the kernel.
 >  fdfile        64     5665    0     4637    22     5    17    17     0 inf   
 >  0
 >       573    5041   42966
 >  
 >  4637 + 573 = 5210, which is a few hundred off from 5665.
 >  Not sure if the measurement is correct though, but if it is, there
 >  might be another leak somewhere or the fix is incomplete.
 >   Thomas
 
 - it's normal that the number of allocated fdfile is not same as
   the number of open files.
 
 - you should subtract the number of cached objects.
   ("vmstat -C|grep fdfile|awk '{print $3*$4}'" + some more.)
 
 YAMAMOTO Takashi