Date: Sat, 14 Feb 2009 22:54:05 -0800 From: Kip Macy <kmacy@freebsd.org> To: Kai Mosebach <kai@freshx.de> Cc: freebsd-xen <freebsd-xen@freebsd.org> Subject: Re: domU page faults under heavy network load Message-ID: <3c1674c90902142254w62aee712j8ae9010361ec5d2a@mail.gmail.com> In-Reply-To: <C5B796A5.3A80%kai@freshx.de> References: <3c1674c90902101130r58c05f07we473c0897fe29481@mail.gmail.com> <C5B796A5.3A80%kai@freshx.de>
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Is this a recent version of HEAD? I'm not able to reproduce. <...> thru: 1947.346ms at 32.9MB/s ( 27.8MB/s avg) 3.3GB thru: 1946.356ms at 32.9MB/s ( 27.9MB/s avg) 3.4GB thru: 1946.910ms at 32.9MB/s ( 27.9MB/s avg) 3.4GB <...> Maybe some variation in the options? Thanks, Kip On Tue, Feb 10, 2009 at 11:40 AM, Kai Mosebach <kai@freshx.de> wrote: > 1024meg > > > On 2/10/09 8:30 PM, "Kip Macy" <kmacy@freebsd.org> wrote: > >> How big is the memory allocation to the VM? >> >> Thanks, >> Kip >> >> >> On Tue, Feb 10, 2009 at 7:59 AM, Kai Mosebach <xen@komadev.de> wrote: >>> Hi, >>> >>> running r188436M on Xen3.3.1 (Centos5, x86_64). The reason is not to clear >>> but seems related to heavy load on pipes + memory + network? >>> It is repeatable with : >>> >>> bsd8# dd if=/dev/zero | nc otherhost 12345 >>> >>> Fatal trap 12: page fault while in kernel mode >>> cpuid = 0; apic id = 00 >>> fault virtual address = 0xd216dd00 >>> fault code = supervisor read, page not present >>> instruction pointer = 0x21:0xc02e4d40 >>> stack pointer = 0x29:0xc332aba8 >>> frame pointer = 0x29:0xc332abfc >>> code segment = base 0x0, limit 0xfffff, type 0x1b >>> = DPL 1, pres 1, def32 1, gran 1 >>> processor eflags = interrupt enabled, resume, IOPL = 0 >>> current process = 12 (irq137: xn) >>> [thread pid 12 tid 100025 ] >>> Stopped at xlvbd_add+0x2f70: movl 0x900(%edx,%eax,4),%edx >>> db> bt >>> <console hangs> >>> >>> >>> On otherhost i get some stuff (between 19 and 62 MB), after nc closes down >>> eventually >>> >>> otherhost# nc -l 12345 | cpipe -vt -b 65535 >/dev/null >>> ... >>> thru: 108930.791ms at 184.3kB/s ( 184.3kB/s avg) 19.6MB >>> >>> best Kai >>> _______________________________________________ >>> freebsd-xen@freebsd.org mailing list >>> http://lists.freebsd.org/mailman/listinfo/freebsd-xen >>> To unsubscribe, send any mail to "freebsd-xen-unsubscribe@freebsd.org" >>> > > >
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