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<DIV><SPAN class=625351722-17042009><FONT face=Arial color=#0000ff size=2>HI
Ruby --</FONT></SPAN></DIV><SPAN class=625351722-17042009>
<DIV><BR><FONT face=Arial color=#0000ff size=2>Good news! I have tmem
working on a 32-bit hypervisor again!</FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625351722-17042009>It is
limited by xenheap, so can't be used effectively on large memory machines and
probably shouldn't be used for benchmarking. But it can be used for
experimentation and some testing.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=625351722-17042009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=625351722-17042009>If you
are still interested, let me know and I will get it cleaned up and
posted.</SPAN></FONT></DIV><SPAN class=625351722-17042009>
<DIV><BR><FONT face=Arial color=#0000ff size=2>Thanks,</FONT></DIV>
<DIV></SPAN></SPAN><SPAN class=625351722-17042009><FONT face=Arial color=#0000ff
size=2>Dan</FONT></SPAN></DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> ruby young
[mailto:yangyang@les.buaa.edu.cn]<BR><B>Sent:</B> Sunday, April 05, 2009 11:02
PM<BR><B>To:</B> Dan Magenheimer<BR><B>Subject:</B> Re: [Tmem-users] compile
error after patch tmem-xen<BR><BR></FONT></DIV>
<DIV>Thanks Dan~</DIV>
<DIV> </DIV>
<DIV>I have not found 64-bit machine now. I tried to change the size of
xenheap using the way mentioned in maillist but not succeed. What a pity!
But I would concern on tmem and I hope I could discuss with you more. </DIV>
<DIV> </DIV>
<DIV>Best wishes!</DIV>
<DIV>
Ruby Young<BR><BR></DIV>
<DIV class=gmail_quote>On Wed, Apr 1, 2009 at 11:10 AM, Dan Magenheimer <SPAN
dir=ltr><<A
href="mailto:dan.magenheimer@oracle.com">dan.magenheimer@oracle.com</A>></SPAN>
wrote:<BR>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2>Hi Ruby
--</FONT></SPAN></DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2>Are you sure your hardware
won't support 64-bit? Nearly all processors built in the last 3-4
years do, even though most people don't use it. In Linux (dom0 is
fine), do "cat /proc/cpuinfo | grep -w lm". If you get
anything, the cpu has 64-bit support.</FONT></SPAN></DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2>Because of the limited
address space in 32-bit, xenheap is very small and the only way to use
pointers from domheap is to bracket EVERY use of a pointer (to memory
obtained from domheap) with two function calls to ensure that the pointer is
mapped in the 32-bit range. This makes the tmem code unreadable and
unmanageable so I dropped 32-bit support.</FONT></SPAN></DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2>Dan</FONT></SPAN></DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid">
<DIV dir=ltr align=left><FONT face=Tahoma size=2>
<DIV class=im>-----Original Message-----<BR><B>From:</B> ruby young
[mailto:<A href="mailto:yangyang@les.buaa.edu.cn"
target=_blank>yangyang@les.buaa.edu.cn</A>]<BR></DIV>
<DIV>
<DIV></DIV>
<DIV class=h5><B>Sent:</B> Tuesday, March 31, 2009 8:02 PM<BR><B>To:</B>
Dan Magenheimer<BR><B>Subject:</B> Re: [Tmem-users] compile error after
patch tmem-xen<BR><BR></DIV></DIV></FONT></DIV>
<DIV>
<DIV></DIV>
<DIV class=h5>
<DIV>Thanks Dan~</DIV>
<DIV> </DIV>
<DIV>My machine is 32-bit hardware, so it's pity that I cannot use
it.</DIV>
<DIV>Do you have any plan to transplant tmem into 32-bit machine? If not,
why don't you do that?Do you think it isn't necessary to do this？</DIV>
<DIV> </DIV>
<DIV>Best wishes!</DIV>
<DIV>
Ruby young<BR><BR></DIV>
<DIV class=gmail_quote>2009/3/31 Dan Magenheimer <SPAN dir=ltr><<A
href="mailto:dan.magenheimer@oracle.com"
target=_blank>dan.magenheimer@oracle.com</A>></SPAN><BR>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2>Hi Ruby
--</FONT></SPAN></DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2>One other thing I
should have told you: tmem will not work on 32-bit hardware or
32-bit Xen. You must have 64-bit hardware and 64-bit
Xen.</FONT></SPAN></DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2>The change you suggest
below is incorrect... all alloc_xenheap_pages calls need to be converted
to use two arguments. There was a patch in xen-unstable this year
to do that and tmem depends on it.</FONT></SPAN></DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2>I should be able to
publish a 3.3.1 patch (and maybe a 64-bit 3.3.1-based xen) today or
tomorrow.</FONT></SPAN></DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2>Dan</FONT></SPAN></DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid">
<DIV dir=ltr align=left><FONT face=Tahoma size=2>
<DIV>-----Original Message-----<BR><B>From:</B> ruby young [mailto:<A
href="mailto:yangyang@les.buaa.edu.cn"
target=_blank>yangyang@les.buaa.edu.cn</A>]<BR></DIV>
<DIV>
<DIV></DIV>
<DIV><B>Sent:</B> Tuesday, March 31, 2009 1:56 AM<BR><B>To:</B> Dan
Magenheimer<BR><B>Subject:</B> Re: [Tmem-users] compile error after
patch tmem-xen<BR><BR></DIV></DIV></FONT></DIV>
<DIV>
<DIV></DIV>
<DIV>Hi Dan~<BR> <BR> The problem in first mail
I have found: in 26 lines of tmem_xen.h: <BR>
#define tmem_alloc_tmemheap_pages(_o) alloc_xenheap_pages(_o,0)
have 2 arguments to function alloc_xenheap_pages,but it should be only
1 argument. <BR> so, I think it can change as
below:<BR> #define
tmem_alloc_tmemheap_pages(_o)
alloc_xenheap_pages(_o)<BR> <BR> best
wishes!<BR>
Ruby<BR><BR>PS: the problem in first mail <BR> tmem.c: In
function ‘pool_alloc’:<BR> tmem.c:678: error: too many
arguments to function ‘alloc_xenheap_pages’<BR>and I cannot find
alloc_xenheap_pages functions in that place but
tmem_alloc_tmemheap_pages(0). What can I do if I want to try to use
tmem?<BR> Thanks very much!<BR><BR><BR>
<DIV class=gmail_quote>2009/3/31 ruby young <SPAN dir=ltr><<A
href="mailto:yangyang@les.buaa.edu.cn"
target=_blank>yangyang@les.buaa.edu.cn</A>></SPAN><BR>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<DIV>Hi Dan~</DIV>
<DIV> </DIV>
<DIV>By the way, I know how to build a guest kernel inside of VM,
and I prefer 2.6.18.8-xen.</DIV>
<DIV> </DIV>
<DIV>
Ruby<BR></DIV>
<DIV class=gmail_quote>2009/3/31 ruby young <SPAN dir=ltr><<A
href="mailto:yangyang@les.buaa.edu.cn"
target=_blank>yangyang@les.buaa.edu.cn</A>></SPAN>
<DIV>
<DIV></DIV>
<DIV><BR>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<DIV>
<DIV>Hi Dan~</DIV>
<DIV> Thanks for your reply!</DIV></DIV>
<DIV> I will try to use and
feedback!<BR> If I have further idea in use
tmem, I'd like sharing the idea with you!</DIV>
<DIV> Best wishes!</DIV>
<DIV>
Ruby<BR></DIV>
<DIV class=gmail_quote>2009/3/31 Dan Magenheimer <SPAN
dir=ltr><<A href="mailto:dan.magenheimer@oracle.com"
target=_blank>dan.magenheimer@oracle.com</A>></SPAN>
<DIV>
<DIV></DIV>
<DIV><BR>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">Hi
Ruby --<BR><BR>Thanks for your feedback!<BR><BR>Tmem requires
both a patched xen and a patched guest kernel.<BR>Also, the xen
tools installed on domain0 should be patched.<BR>Then, tmem must
be enabled with the xen boot parameter "tmem"<BR>and
"tmem_compress" will enable compression of all
tmem<BR>pages.<BR><BR>Do you know how to build and boot a new
guest kernel inside<BR>of a VM? Would you prefer
2.6.18-xen or 2.6.29 as your guest<BR>kernel?<BR><BR>Since tmem
absorbs memory from xen's free memory list, you<BR>can see from
dom0 that tmem is using memory with:<BR><BR>xm info | grep
free<BR><BR>If you have the "watch" command on your system,
you can do:<BR><BR>watch "xm info | grep free"<BR><BR>to
watch xen's free memory change as tmem uses it.<BR>
<DIV><BR>Dan<BR><BR>-----Original Message-----<BR>From: ruby
young [mailto:<A href="mailto:yangyang@les.buaa.edu.cn"
target=_blank>yangyang@les.buaa.edu.cn</A>]<BR></DIV>
<DIV>
<DIV></DIV>
<DIV>Sent: Monday, March 30, 2009 7:07 AM<BR>To: Dan
Magenheimer<BR>Subject: Re: [Tmem-users] compile error after
patch tmem-xen<BR><BR><BR>Hi Dan~<BR><BR>Thanks for your
reply.<BR>I'm interested in memory allocation method of xen and
I have follow your self-balloon and tmem. After rebuild
self-ballooning, I think it's a good idea of constructing a
memory pool which can implemet dynamic memory allocation and
reduce IO paging, then I read your mail list and you summit
slide. It's really good idea and long-term planning of your
tmem.<BR>Now I have some problem of your tmem. For I didn't find
readme of tmem, I didn't know how to use it, that means after I
patched successfully how do I know tmem can work
correctly?<BR>Another problem is how do you test the usage rate
of the whole memory? You have said the tmem pool can full with
the whole memory space, but how do you know? Is it some test
bench for you to say that?<BR><BR>Best Wishes!<BR>
Ruby Young<BR><BR><BR>2009/3/26 Dan Magenheimer <<A
href="mailto:dan.magenheimer@oracle.com"
target=_blank>dan.magenheimer@oracle.com</A>><BR><BR>Hi Ruby
--<BR><BR>Tmem is still under active development and I've been
focused on keeping up with xen-unstable. It is difficult
to keep active development synchronized with many versions (of
both xen and Linux) but I have started working on a patch to
work with Xen 3.3.1 (not 3.3.0). Would that work for you?
If so, I should have it in a few days.<BR><BR>Would you
mind describing what you are planning to use tmem
for?<BR><BR>Thanks,<BR>Dan<BR>-----Original
Message-----<BR>From: ruby young [mailto:<A
href="mailto:yangyang@les.buaa.edu.cn"
target=_blank>yangyang@les.buaa.edu.cn</A>]<BR>Sent: Wednesday,
March 25, 2009 7:24 PM<BR>To: <A
href="mailto:tmem-users@oss.oracle.com"
target=_blank>tmem-users@oss.oracle.com</A><BR>Subject:
[Tmem-users] compile error after patch tmem-xen<BR><BR><BR>Hi,
all<BR> After I patched all of the tmem-xen-*.patch
and recompile xen 3.3.0, There is an error:<BR>
tmem.c: In function ‘pool_alloc’:<BR>
tmem.c:678: error: too many arguments to function
‘alloc_xenheap_pages’<BR>and I cannot find alloc_xenheap_pages
functions in that place but tmem_alloc_tmemheap_pages(0). What
can I do if I want to try to use tmem?<BR> Thanks
very much!<BR><BR>--<BR>Best
wishes<BR><BR>杨漾<BR>北京航空航天大学计算机学院体系结构研究所<BR>电话:010-82338059-132<BR>邮件:<A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>地址：北京市海淀区学院路37号北京航空航天大学新主楼
G座1026<BR>--------------------------------------------------------------------------------<BR>Yang
Yang<BR>Institute of Computer Architecture and System<BR>BeiHang
University（BUAA）<BR>Tel: (86-10)82338059-132<BR>Email: <A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>Addr: Room
1026,Building G,The New Main Building,37# Xueyuan Rd.,Haidian
District, Beijing 100083,
PRC<BR><BR><BR>_______________________________________________<BR>Tmem-users
mailing list<BR><A href="mailto:Tmem-users@oss.oracle.com"
target=_blank>Tmem-users@oss.oracle.com</A><BR><A
href="http://oss.oracle.com/mailman/listinfo/tmem-users"
target=_blank>http://oss.oracle.com/mailman/listinfo/tmem-users</A><BR><BR><BR><BR><BR><BR>--<BR>Best
wishes<BR><BR>杨漾<BR>北京航空航天大学计算机学院体系结构研究所<BR>电话:010-82338059-132<BR>邮件:<A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>地址：北京市海淀区学院路37号北京航空航天大学新主楼
G座1026<BR>--------------------------------------------------------------------------------<BR>Yang
Yang<BR>Institute of Computer Architecture and System<BR>BeiHang
University（BUAA）<BR>Tel: (86-10)82338059-132<BR>Email: <A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>Addr: Room
1026,Building G,The New Main Building,37# Xueyuan Rd.,Haidian
District, Beijing 100083,
PRC<BR></DIV></DIV></BLOCKQUOTE></DIV></DIV></DIV>
<DIV>
<DIV></DIV>
<DIV><BR><BR clear=all><BR>-- <BR>Best
wishes<BR><BR>杨漾<BR>北京航空航天大学计算机学院体系结构研究所<BR>电话:010-82338059-132<BR>邮件:<A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>地址：北京市海淀区学院路37号北京航空航天大学新主楼
G座1026<BR>--------------------------------------------------------------------------------<BR>Yang
Yang<BR>Institute of Computer Architecture and System <BR>BeiHang
University（BUAA）<BR>Tel: (86-10)82338059-132<BR>Email: <A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>Addr: Room 1026,Building
G,The New Main Building,37# Xueyuan Rd.,Haidian District, Beijing
100083, PRC<BR></DIV></DIV></BLOCKQUOTE></DIV></DIV></DIV><BR><BR
clear=all><BR>-- <BR>
<DIV>
<DIV></DIV>
<DIV>Best
wishes<BR><BR>杨漾<BR>北京航空航天大学计算机学院体系结构研究所<BR>电话:010-82338059-132<BR>邮件:<A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>地址：北京市海淀区学院路37号北京航空航天大学新主楼
G座1026<BR>--------------------------------------------------------------------------------<BR>Yang
Yang<BR>Institute of Computer Architecture and System <BR>BeiHang
University（BUAA）<BR>Tel: (86-10)82338059-132<BR>Email: <A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>Addr: Room 1026,Building
G,The New Main Building,37# Xueyuan Rd.,Haidian District, Beijing
100083, PRC<BR></DIV></DIV></BLOCKQUOTE></DIV><BR><BR clear=all><BR>--
<BR>Best
wishes<BR><BR>杨漾<BR>北京航空航天大学计算机学院体系结构研究所<BR>电话:010-82338059-132<BR>邮件:<A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>地址：北京市海淀区学院路37号北京航空航天大学新主楼
G座1026<BR>--------------------------------------------------------------------------------<BR>Yang
Yang<BR>Institute of Computer Architecture and System <BR>BeiHang
University（BUAA）<BR>Tel: (86-10)82338059-132<BR>Email: <A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>Addr: Room 1026,Building
G,The New Main Building,37# Xueyuan Rd.,Haidian District, Beijing
100083, PRC<BR></DIV></DIV></BLOCKQUOTE></DIV></BLOCKQUOTE></DIV><BR><BR
clear=all><BR>-- <BR>Best
wishes<BR><BR>杨漾<BR>北京航空航天大学计算机学院体系结构研究所<BR>电话:010-82338059-132<BR>邮件:<A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>地址：北京市海淀区学院路37号北京航空航天大学新主楼
G座1026<BR>--------------------------------------------------------------------------------<BR>Yang
Yang<BR>Institute of Computer Architecture and System <BR>BeiHang
University（BUAA）<BR>Tel: (86-10)82338059-132<BR>Email: <A
href="mailto:9907yruby@gmail.com"
target=_blank>9907yruby@gmail.com</A><BR>Addr: Room 1026,Building G,The
New Main Building,37# Xueyuan Rd.,Haidian District, Beijing 100083,
PRC<BR></DIV></DIV></BLOCKQUOTE></DIV></BLOCKQUOTE></DIV><BR><BR
clear=all><BR>-- <BR>Best
wishes<BR><BR>杨漾<BR>北京航空航天大学计算机学院体系结构研究所<BR>电话:010-82338059-132<BR>邮件:<A
href="mailto:9907yruby@gmail.com">9907yruby@gmail.com</A><BR>地址：北京市海淀区学院路37号北京航空航天大学新主楼
G座1026<BR>--------------------------------------------------------------------------------<BR>Yang
Yang<BR>Institute of Computer Architecture and System <BR>BeiHang
University（BUAA）<BR>Tel: (86-10)82338059-132<BR>Email: <A
href="mailto:9907yruby@gmail.com">9907yruby@gmail.com</A><BR>Addr: Room
1026,Building G,The New Main Building,37# Xueyuan Rd.,Haidian District,
Beijing 100083, PRC<BR></BLOCKQUOTE></BODY></HTML>