From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1XdnTn-0000oQ-QB for user-mode-linux-devel@lists.sourceforge.net; Mon, 13 Oct 2014 21:48:35 +0000 Received: from www17.your-server.de ([213.133.104.17]) by sog-mx-2.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1XdnTl-0002X9-G7 for user-mode-linux-devel@lists.sourceforge.net; Mon, 13 Oct 2014 21:48:35 +0000 Received: from [84.59.57.14] (helo=[192.168.2.108]) by www17.your-server.de with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.80.1) (envelope-from ) id 1XdnTc-000866-L3 for user-mode-linux-devel@lists.sourceforge.net; Mon, 13 Oct 2014 23:48:24 +0200 Message-ID: <1413236904.13916.13.camel@localhost.localdomain> From: Thomas Meyer Date: Mon, 13 Oct 2014 23:48:24 +0200 Mime-Version: 1.0 List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net Subject: [uml-devel] kernel stalls in balance_dirty_pages_ratelimited() To: user-mode-linux-devel #0 balance_dirty_pages_ratelimited (mapping=0x792cc618) at mm/page-writeback.c:1587 #1 0x00000000600ba54f in do_wp_page (mm=, vma=, address=, page_table=, pmd =, orig_pte=..., ptl=) at mm/memory.c:2178 #2 0x00000000600bc986 in handle_pte_fault (flags=, pmd=, pte=, address=, v ma=, mm=) at mm/memory.c:3230 #3 __handle_mm_fault (flags=, address=, vma=, mm=) at mm/memory.c:3335 #4 handle_mm_fault (mm=, vma=0x78008e88, address=1462695424, flags=) at mm/memory.c:3364 #5 0x0000000060028cec in handle_page_fault (address=1462695424, ip=, is_write=, is_user=0, code_out=) at arch/um/kernel/trap.c:75 #6 0x00000000600290d7 in segv (fi=..., ip=1228924391, is_user=, regs=0x624f5728) at arch/um/kernel/trap.c:222 #7 0x0000000060029395 in segv_handler (sig=, unused_si=, regs=) at arch/um/kernel/trap.c: 191 #8 0x0000000060039c0f in userspace (regs=0x624f5728) at arch/um/os-Linux/skas/process.c:429 #9 0x0000000060026a8c in fork_handler () at arch/um/kernel/process.c:149 #10 0x0000000000000000 in ?? () backing_dev_info: p *mapping->backing_dev_info $2 = {bdi_list = {next = 0x605901a0 , prev = 0x80a42890}, ra_pages = 32, state = 8, capabilities = 4, congested_fn = 0x0, con gested_data = 0x0, name = 0x604fb827 "block", bdi_stat = {{count = 4}, {count = 0}, {count = 318691}, {count = 314567}}, bw_time_stamp = 4339445229, dirtied_stamp = 318686, written_stamp = 314564, write_bandwidth = 166, avg_write_bandwidth = 164, dirty_ratelimit = 1, ba lanced_dirty_ratelimit = 1, completions = {events = {count = 3}, period = 4481, lock = {raw_lock = {}}}, dirty_exceeded = 0, min_ratio = 0, max_ratio = 100, max_prop_frac = 1024, wb = {bdi = 0x80a42278, nr = 0, last_old_flush = 4339445229, dwork = {work = {data = {counter = 65}, entry = {next = 0x80a42350, prev = 0x80a42350}, func = 0x600f4b25 }, timer = {entry = { next = 0x606801a0 , prev = 0x803db650}, expires = 4339445730, base = 0x6067ee82 , function = 0 x60051dbb , data = 2158240584, slack = -1}, wq = 0x808d9c00, cpu = 1}, b_dirty = {next = 0x7a4ce1f8, prev = 0x80 6ad9a8}, b_io = {next = 0x80a423c0, prev = 0x80a423c0}, b_more_io = {next = 0x80a423d0, prev = 0x80a423d0}, list_lock = {{rlock = {raw_ lock = {}}}}}, wb_lock = {{rlock = {raw_lock = {}}}}, work_list = {next = 0x80a423e0, prev = 0x80a423e0 }, dev = 0x80b68e00, laptop_mode_wb_timer = {entry = {next = 0x0, prev = 0x0}, expires = 0, base = 0x6067ee80 , functi on = 0x600a6efd , data = 2158240008, slack = -1}, debug_dir = 0x80419e58, debug_stats = 0x80419d98} when i set the cap_dirty from the backing-dev ( capabilities = 5 ) the system comes back to normal. any ideas what's going on here? with kind regards thomas ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel