Date: Fri, 21 Sep 2001 13:41:34 -0400
From: Chuck Cranor <chuck@research.att.com>
To: freebsd-stable@FreeBSD.org
Cc: mike@FreeBSD.org
Subject: more on 4.4-RELEASE kernel deadlock ("FFS node")
Message-ID: <20010921134134.T7319@chips.research.att.com>
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this is a followup to my previous message: first, the problem i am seeing is almost identical to the one reported in kern/19479 (see http://www.FreeBSD.org/cgi/query-pr.cgi?pr=19479) which was closed by mike@freebsd back in july. my data would suggest that the PR should be re-opened, because it doesn't seem fixed? i reran a "make release" while having a "vmstat -m | grep 'FFS node'" running every three seconds in another window. the memory allocation for "FFS node" is exploding during the "make release"... here is the last bit of vmstat -m output before the kernel deadlocked: Memory statistics by type Type Kern Type InUse MemUse HighUse Limit Requests Limit Limit Size(s) .... FFS node199352 99676K 99677K102400K 648929 0 0 512 FFS node199871 99936K 99936K102400K 649930 0 0 512 FFS node200457100229K 100229K102400K 651733 0 0 512 FFS node200794100397K 100398K102400K 653082 0 0 512 FFS node200875100438K 100440K102400K 653902 0 0 512 FFS node201466100733K 100733K102400K 655886 0 0 512 FFS node202732101366K 101367K102400K 658611 0 0 512 FFS node203300101650K 101651K102400K 660008 0 0 512 FFS node203851101926K 101926K102400K 661718 0 0 512 FFS node203923101962K 101962K102400K 661927 0 0 512 FFS node204489102245K 102245K102400K 663650 0 0 512 <deadlock here!> 102245K seems like an awful lot of memory for FFS nodes? what would cause this? does anyone else see very large FFS node memory allocation during "make release"? i got a stack trace of the process stuck in "FFS node"... it is basically: open vn_open namei lookup ufs_vnoperate vfs_cache_lookup ufs_vnoperate ufs_lookup ffs_vget +0x8b malloc + 0x1a3 tsleep clearly we are reaching the malloc limit for "FFS node" and hanging. chuck To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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