Date: Mon, 6 Apr 2015 23:37:56 -0700 From: Garrett Cooper <yaneurabeya@gmail.com> To: freebsd-fs@freebsd.org Cc: freebsd-stable <freebsd-stable@FreeBSD.org> Subject: FreeBSD/ZFS on 9.3-RELEASE chews up memory with "wide" directories when calling readdir, etc; causes trap 12 panics Message-ID: <F390CDB8-024C-4F6F-8793-752756859B5C@gmail.com>
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[-- Attachment #1 --] Hi, Long story short, I had a lot of mail spooled up in /var/spool. When I did ls /var/spool, ZFS chewed up almost all 12GB of my memory in <10 mins (because there were enough files there) and the system eventually panicked because [I assume that a memory allocation failed and] a trap 12 panic was caught. I don’t have the exact details, but it should be relatively easy to repro (YMMV if you have a boatload of RAM): repro_end=10000000000 for i in $(seq 1 $repro_end); do mktemp tmp.XXXXXXXXXXXX; done ls This might be ameliorated via r281026, but this change is only available in CURRENT (so far), and I haven’t tested it. Are there any comments about this scalability issue with FreeBSD/ZFS? Thanks, [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQEcBAEBCgAGBQJVI3tFAAoJEMZr5QU6S73eR6kH/A1XPCegxem49+98PdTl4NuY 95tQEbzANC8xbnOFueluyEk6/8/X0kIFvEwraQxJg9kPUuC1goWghzNVPp/iTXuv TOxv3jTUmg2GYP0nvkcP/0G7G/7QRthr59XYtZZQZZiw3XqjpnDLECJ37eGjAxyY QiQte9z7FnzUMAE/f+vPGTffwkEYh9+DcFwmoCfTAnS9vmt8UfyYbOyuPmP58Dyv OJkAa9WpIVUrGSlILnXi+H8A5S9BTLZb91g+pOsp1YTeXoE6X7v+JafoM6kHMZEM gV/xaHoJXeCecp1VDDt/yLXM6ZTu36GnuDBxVdtghLJPH1eRBQyOdEXJQUhEX3c= =nPfJ -----END PGP SIGNATURE-----
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