Date: Wed, 16 Sep 1998 03:29:32 -0700 From: Don Lewis <Don.Lewis@tsc.tdk.com> To: Mike Smith <mike@smith.net.au>, gibbs@plutotech.com Cc: current@FreeBSD.ORG Subject: Re: wierd kernel memory use statistics Message-ID: <199809161029.DAA01972@salsa.gv.tsc.tdk.com> In-Reply-To: Mike Smith <mike@smith.net.au> "Re: wierd kernel memory use statistics" (Sep 16, 12:21am)
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On Sep 16, 12:21am, Mike Smith wrote:
} Subject: Re: wierd kernel memory use statistics
} > On Sep 15, 11:59pm, Mike Smith wrote:
} > } Subject: Re: wierd kernel memory use statistics
} > } >
} > } > vmstat -m tells me:
} > } >
} > } > Memory statistics by type Type Kern
} > } > Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)
} > } > ...
} > } > devbuf 257 181K 181K 10406K 565 0 0 16,32,64,128,256,512,1K,2K,4K,16K,32K
} > } > mbuf 1 2K 2K 10406K 1 0 0 2K
} > } > temp -9 -19K 1K 10406K 273 0 0 16,32,64,256,512,1K,4K
} > } > kld 1 1K 1K 10406K 1 0 0 32
} > } >
} > } > The numbers for "temp" look pretty suspicious.
} > }
} > } Someone is freeing blocks to the M_TEMP pool that were not allocated
} > } from it. Does this happen at a reasonable rate? Can you see any other
} > } class that looks like it might be leaking?
} >
} > The numbers seem to be static. They haven't changed in the last couple
} > of hours since I rebooted. I've done a make world in the meantime. The
} > kernel is a fairly fresh and has CAM+softupdates.
}
} Sounds like another CAM wrinkle; I expect we're going to see a few of
} these before the week is out. It shouldn't be particularly harmful -
} the numbers are just for accounting's sake.
Good call.
--- cam/cam_xpt.c.orig Tue Sep 15 20:32:09 1998
+++ cam/cam_xpt.c Wed Sep 16 03:08:41 1998
@@ -5137,7 +5137,7 @@
static void
probecleanup(struct cam_periph *periph)
{
- free(periph->softc, M_TEMP);
+ free(periph->softc, M_DEVBUF);
}
static void
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