From owner-freebsd-current@freebsd.org Tue May 22 12:29:35 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 4DBC3EF447D for ; Tue, 22 May 2018 12:29:35 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id D9E5D7212F for ; Tue, 22 May 2018 12:29:34 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: by mailman.ysv.freebsd.org (Postfix) id 9600AEF447C; Tue, 22 May 2018 12:29:34 +0000 (UTC) Delivered-To: current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 84575EF447B for ; Tue, 22 May 2018 12:29:34 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1CB707212D; Tue, 22 May 2018 12:29:34 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from slw by zxy.spb.ru with local (Exim 4.86 (FreeBSD)) (envelope-from ) id 1fL6Ps-000H0p-QA; Tue, 22 May 2018 15:29:24 +0300 Date: Tue, 22 May 2018 15:29:24 +0300 From: Slawa Olhovchenkov To: Steve Wills Cc: Alexander Leidinger , current@freebsd.org Subject: Re: Deadlocks / hangs in ZFS Message-ID: <20180522122924.GC1954@zxy.spb.ru> References: <20180522101749.Horde.Wxz9gSxx1xArxkYMQqTL0iZ@webmail.leidinger.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: slw@zxy.spb.ru X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 May 2018 12:29:35 -0000 On Tue, May 22, 2018 at 08:17:00AM -0400, Steve Wills wrote: > I may be seeing similar issues. Have you tried leaving top -SHa running > and seeing what threads are using CPU when it hangs? I did and saw pid > 17 [zfskern{txg_thread_enter}] using lots of CPU but no disk activity > happening. Do you see similar? Can you try https://reviews.freebsd.org/D7538 and report? > On 05/22/18 04:17, Alexander Leidinger wrote: > > Hi, > > > > does someone else experience deadlocks / hangs in ZFS? > > > > What I see is that if on a 2 socket / 4 cores -> 16 threads system I do > > a lot in parallel (e.g. updating ports in several jails), then the > > system may get into a state were I can login, but any exit (e.g. from > > top) or logout of shell blocks somewhere. Sometimes it helps to CTRL-C > > all updates to get the system into a good shape again, but most of the > > times it doesn't. > > > > On another system at the same rev (333966) with a lot less CPUs (and AMD > > instead of Intel), I don't see such a behavior. > > > > Bye, > > Alexander. > > > _______________________________________________ > freebsd-current@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"