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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-users] pv_ops 2.6.31.6
Hi, I have recompiled the kernel and the performance is much better so thanks for that. What does that setting do anyway? Thanks Ian -----Original Message----- From: Pasi Kärkkäinen [mailto:pasik@xxxxxx] Sent: 23 January 2010 19:15 To: Ian Tobin Cc: Olivier B.; xen-users@xxxxxxxxxxxxxxxxxxx Subject: Re: [Xen-users] pv_ops 2.6.31.6 On Sat, Jan 23, 2010 at 07:12:12PM -0000, Ian Tobin wrote: > Good point! > > I think i have overlooked that but i do recall seeing it in the instructions. > Would that slow it down then? > Yeah, at least on my 32b systems it'll make dom0 crash in half an hour or so.. CONFIG_HIGHPTE=n has been stable for me. -- Pasi > > Ian > > > -----Original Message----- > From: Pasi Kärkkäinen [mailto:pasik@xxxxxx] > Sent: 23 January 2010 18:32 > To: Ian Tobin > Cc: Olivier B.; xen-users@xxxxxxxxxxxxxxxxxxx > Subject: Re: [Xen-users] pv_ops 2.6.31.6 > > On Sat, Jan 23, 2010 at 06:18:05PM -0000, Ian Tobin wrote: > > Thanks, ill do the test and wait for RAM before doing anything further. No > > errors in dmesg and its a 32bit Dom0. > > > > Do you have CONFIG_HIGHPTE=n in .config? > > If it's enabled (=y) then your dom0 kernel will definitely crash.. > > -- Pasi > > > Ian > > > > > > > > -----Original Message----- > > From: Pasi Kärkkäinen [mailto:pasik@xxxxxx] > > Sent: 23 January 2010 11:56 > > To: Ian Tobin > > Cc: Olivier B.; xen-users@xxxxxxxxxxxxxxxxxxx > > Subject: Re: [Xen-users] pv_ops 2.6.31.6 > > > > On Sat, Jan 23, 2010 at 09:38:28AM -0000, Ian Tobin wrote: > > > Hi, > > > > > > Appologies for the delay. > > > > > > Xm top shows that a DomU (windows 2008) was using 100% cpu however it > > > wasn't actually doing anything > > > but i killed it off so no DomUs were running and the system was still > > > painfully slow until its rebooted but it still slows down. > > > > > > > So you're saying the system was slow even after the windows 2008 guest was > > killed? Something definitely wrong there.. > > Any errors in "xm dmesg" ? or in dom0 "dmesg" ? > > > > Was this 32bit dom0? > > > > > > > > I have discovered the RAM is not the recommended RAM kit for this > > > motherboard so i have ordered 8gb > > > of the correct RAM type. Do you think this would be the cause? > > > > > > > Who knows.. maybe. > > > > Make sure you run memtest86+ for a long time to make sure the RAM is ok. > > Sometimes the memory errors will show up only after a couple of _days_ of > > running memtest. > > > > http://memtest.org/download/4.00/memtest86+-4.00.iso.zip > > > > -- Pasi > > > > > thanks > > > > > > Ian > > > -----Original Message----- > > > From: Pasi Kärkkäinen [mailto:pasik@xxxxxx] > > > Sent: 22 January 2010 11:23 > > > To: Ian Tobin > > > Cc: Olivier B.; xen-users@xxxxxxxxxxxxxxxxxxx > > > Subject: Re: [Xen-users] pv_ops 2.6.31.6 > > > > > > On Fri, Jan 22, 2010 at 10:52:04AM -0000, Ian Tobin wrote: > > > > Ive got a major performance issue. If i boot up the dom0 without > > > > starting xen and copy a large file to it via ftp its fine. > > > > > > > > As soon as i run xend start the Dom0 gets slower and slower until the > > > > server is at a crawl so its unusable. > > > > > > > > Anyone else getting slow response? > > > > > > > > > > I haven't seen that. > > > > > > Please monitor your dom0 with "top" and also with "xm top". > > > > > > What do they reveal? Does some process start eating more and more CPU > > > time? > > > Does some process leak memory? Does dom0 have iowait? > > > > > > Did you limit dom0_mem=512M or similar? > > > > > > -- Pasi > > > > > > > > > > > > > > > > > > > -----Original Message----- > > > > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx > > > > [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Olivier B. > > > > Sent: 22 January 2010 08:34 > > > > To: xen-users@xxxxxxxxxxxxxxxxxxx > > > > Subject: Re: [Xen-users] pv_ops 2.6.31.6 > > > > > > > > For me restore/live migration doesn't work. > > > > > > > > For dom0 I use the version 2.6.31.6 00751-g600545, with vanilla > > > > 2.6.31.12 pv_ops version on domU, and debian xen 3.4.2-2 > > > > > > > > On restore I obtain that : > > > > > > > > [49532.764004] <4>------------[ cut here ]------------ > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] <4>WARNING: at arch/x86/xen/time.c:180 > > > > xen_sched_clock+0x7c/0xaf() > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] <d>Modules linked in: > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] nf_conntrack_ipv4 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] nf_defrag_ipv4 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] xt_state > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] nf_conntrack > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] dm_snapshot > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [last unloaded: scsi_wait_scan] > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] Pid: 30422, comm: kstop/0 Tainted: G W > > > > 2.6.31.12-dae-xen #1 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] Call Trace: > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8104e0d1>] warn_slowpath_common+0x88/0xb6 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8104e121>] warn_slowpath_null+0x22/0x38 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8100dc4f>] xen_sched_clock+0x7c/0xaf > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8101829d>] sched_clock+0x9/0xd > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8106b73b>] sched_clock_cpu+0xa7/0x168 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff81047d4b>] update_rq_clock+0x26/0x48 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff81048c11>] try_to_wake_up+0xac/0x2af > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8101135d>] ? retint_restore_args+0x5/0x6 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff81048e34>] default_wake_function+0x20/0x36 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8103bcdd>] __wake_up_common+0x58/0xa2 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8106120e>] ? wq_barrier_func+0x0/0x36 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8103e07d>] complete+0x49/0x73 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8106122e>] wq_barrier_func+0x20/0x36 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff81060d8d>] worker_thread+0x156/0x20d > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8100dd1f>] ? xen_restore_fl_direct_end+0x0/0x1 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff81065b7f>] ? autoremove_wake_function+0x0/0x5a > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff81060c37>] ? worker_thread+0x0/0x20d > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff81065759>] kthread+0x9b/0xa3 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff810119ea>] child_rip+0xa/0x20 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff81010bac>] ? int_ret_from_sys_call+0x7/0x1b > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff8101135d>] ? retint_restore_args+0x5/0x6 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] [<ffffffff810119e0>] ? child_rip+0x0/0x20 > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] <4>---[ end trace bbe4ba0e56e4a4ae ]--- > > > > [49532.764004] BUG: recent printk recursion! > > > > [49532.764004] <4>------------[ cut here ]------------ > > > > > > > > > > > > But except that, it works fine. > > > > > > > > Olivier > > > > > > > > Pasi Kärkkäinen a écrit : > > > > > On Thu, Jan 21, 2010 at 09:01:21PM -0000, Ian Tobin wrote: > > > > > > > > > >> Hi, > > > > >> > > > > >> > > > > >> > > > > >> Quick question, is the 2.6.31.6 kernel in Jermeys tree stable > > > > >> enough for a > > > > >> live environment? Ive been playing with it and seems to work > > > > >> quite well. > > > > >> > > > > >> > > > > > > > > > > It works for many people.. so please keep using it, and report any > > > > > issues/bugs found. > > > > > > > > > > Also make sure you monitor the changelogs, it's still under > > > > > development so you want to > > > > > upgrade every now and then to get the latest bits. > > > > > > > > > > xen/master branch changelog: > > > > > http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/master > > > > > > > > > > Whole git tree changelog: > > > > > http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git > > > > > > > > > > -- Pasi > > > > > > > > > > > > > > > _______________________________________________ > > > > > Xen-users mailing list > > > > > Xen-users@xxxxxxxxxxxxxxxxxxx > > > > > http://lists.xensource.com/xen-users > > > > > > > > > > > > > _______________________________________________ > > > > Xen-users mailing list > > > > Xen-users@xxxxxxxxxxxxxxxxxxx > > > > http://lists.xensource.com/xen-users > > > > > > > > > > > > > > > > _______________________________________________ > > > > Xen-users mailing list > > > > Xen-users@xxxxxxxxxxxxxxxxxxx > > > > http://lists.xensource.com/xen-users > > > > > > > > > > > > _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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