From owner-freebsd-questions@FreeBSD.ORG Mon Mar 23 18:50:34 2015 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 3722F1D0 for ; Mon, 23 Mar 2015 18:50:34 +0000 (UTC) Received: from smtp.infracaninophile.co.uk (smtp6.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3cd3:cd67:fafa:3d78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "smtp.infracaninophile.co.uk", Issuer "ca.infracaninophile.co.uk" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id CB254B3D for ; Mon, 23 Mar 2015 18:50:33 +0000 (UTC) Received: from zero-gravitas.local (no-reverse-dns.metronet-uk.com [85.199.232.226] (may be forged)) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.15.1/8.15.1) with ESMTPSA id t2NIoQKa072507 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO) for ; Mon, 23 Mar 2015 18:50:26 GMT (envelope-from m.seaman@infracaninophile.co.uk) Authentication-Results: smtp.infracaninophile.co.uk; dmarc=none header.from=infracaninophile.co.uk DKIM-Filter: OpenDKIM Filter v2.9.2 smtp.infracaninophile.co.uk t2NIoQKa072507 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=infracaninophile.co.uk; s=201001-infracaninophile; t=1427136627; bh=Cd4L7T+mJNn8AdoasuHotz7v+NfBtOcBKWECfwWFd2k=; h=Date:From:To:Subject:References:In-Reply-To; z=Date:=20Mon,=2023=20Mar=202015=2018:50:19=20+0000|From:=20Matthew =20Seaman=20|To:=20freebsd-questi ons@freebsd.org|Subject:=20Re:=20Un-kill-able=20process=20hang=20a t=20umtxpi=20state=20with=20100%=20cpu|References:=20<142710916903 8-5999345.post@n5.nabble.com>=20<1427134474819-5999426.post@n5.nab ble.com>|In-Reply-To:=20<1427134474819-5999426.post@n5.nabble.com> ; b=Sfci4x2BbMJVqdCz6sZXGhURf7wbkXAzJYKbQkHaaMUQZm7cdFUKMUGvPyQ9m6moB 8W5kHGl8X8UueIfBa/hl2dtt/Ko5m96yb6U6NCN8l/hlCL0lZgaG1Rcoy7Xm9r/mQO ipWxq0JoCJU3yoNQ6Uuv0pzvzyRQYeTdlm9YaHkY= X-Authentication-Warning: lucid-nonsense.infracaninophile.co.uk: Host no-reverse-dns.metronet-uk.com [85.199.232.226] (may be forged) claimed to be zero-gravitas.local Message-ID: <5510606B.2010400@infracaninophile.co.uk> Date: Mon, 23 Mar 2015 18:50:19 +0000 From: Matthew Seaman User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: freebsd-questions@freebsd.org Subject: Re: Un-kill-able process hang at umtxpi state with 100% cpu References: <1427109169038-5999345.post@n5.nabble.com> <1427134474819-5999426.post@n5.nabble.com> In-Reply-To: <1427134474819-5999426.post@n5.nabble.com> Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="67ujVgVBTrpNjNaf5AWmD1qK3xW6LeIwS" X-Virus-Scanned: clamav-milter 0.98.6 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU autolearn=ham autolearn_force=no version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lucid-nonsense.infracaninophile.co.uk X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Mar 2015 18:50:34 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --67ujVgVBTrpNjNaf5AWmD1qK3xW6LeIwS Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2015/03/23 18:14, BBlister wrote: > Following an advice from a user of this list,=20 > I did a=20 >=20 > kill -STOP 35662=20 >=20 > in order to minimize the CPU consumption=20 >=20 > and as soon as I hit enter the process disappeared (died). I had alread= y > killed its parent, but > it was not possible to kill this process. By sending the STOP signal it= was > killed. Are you sure? STOP usually does exactly what it says on the tin. It's like Ctrl-Z in the shell. You can in theory use 'kill -CONT pid' to wake the process up again. If the process died from a SIGSTOP it must be because there were other pending signals that could somehow be delivered once the process was stopped, but that strikes me as pretty odd. Cheers, Matthew --67ujVgVBTrpNjNaf5AWmD1qK3xW6LeIwS Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.22 (Darwin) Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJVEGByAAoJEABRPxDgqeTn6yoP/RhqA9z4VQ2yWAKycGAR3F/F +Ml5jJ6CdSOdvgFrR9dtnVHQM1xBb6Cl0A4F1ScL7YI0uhfuAeqbMXhD5hFgTbca siRs5CKyLl2IhFTwenaTJSsRldhtqnjPE8kihFgTLjOHNRQCPOi3b3hm5rGpdiaB /JR2qZFAF4BeN0Ytln4xlbdwVTobbl1l9ynTdJz0Osshre8wRfs6EWvxCAxKjzLO eXZ5czRjITPUfR+L86++NUs/OMIPuiIHnIh3cWH71QyCShv+q9hlqVs7jp8gkGS/ yVx8DHnfoibcWMqS+/zzkrd69b85nkqojVmS7SZlM7dBywIfkzHDps40Bw9TeM6P 0BqKmwp7MBgWN7xGWeSC1OHRktqJcmfS92xbc7ZnHm6WV/+J3a7ZIxxIcZc5GT4C DBBC2q5fAqtrIflTofltWfSDaK8ubaPilXsjfNBmzN/t4q0vsl7XiaxXze8+jEkC mLdW/6TyKuCQQN3uGG11dJJzwRSvQfU/RKRxaVhCxYR2Q4GbfmPnIb4rHJdlllr8 b8W7BgY/cJIyI+dd0JYdRwafPhYp5l6jK7E+8mbTZZXSdqmgnM+CGcNfBr4ZMbVR AD3sIKY0ZAf9RhpxUNleoh2MDMXKV25CiyUmGNbuOfMwkwpmrNJBo2ArlPvIDX0j Vj4sSmHlbExzinMn2Lu9 =kQRf -----END PGP SIGNATURE----- --67ujVgVBTrpNjNaf5AWmD1qK3xW6LeIwS--