Date: Wed, 13 Dec 2000 15:35:53 +0100 (CET) From: Marius Bendiksen <mbendiks@eunet.no> To: Seigo Tanimura <tanimura@r.dl.itc.u-tokyo.ac.jp> Cc: dillon@earth.backplane.com, bright@wintelcom.net, arch@FreeBSD.ORG Subject: Re: Even 1GB KVA is not enough, but we have no more space Message-ID: <Pine.BSF.4.05.10012131534240.37223-100000@login-1.eunet.no> In-Reply-To: <vmd7ey8hdr.wl@rina.r.dl.itc.u-tokyo.ac.jp>
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> Sorry, please forget this matter. The culprit truned out to be a race > condition of testing-and-setting ffs_inode_hash_lock in > ffs_vget(). Mutexifing the test-and-sleep-or-set and wakeup-reset > operations was enough to fix the problem. Now my kernel allocates up > to 316K vnodes on make buildworld and release, so malloc(9) pool of > 200MB is sufficient. (316K vnodes occupy about 90-100MB in kmem_map) For older systems, I used to replace the wakeup with wakeup_one. I guess that would reduce lock contention too. I sent a patch on that topic a while ago to one of the lists when someone was seeing problems with ffs_vget deadlocks. Marius To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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