Sébastien CRAMATTE
2006-Oct-12 23:14 UTC
[Xen-users] Why top command doesn''t return correct memory amount (xentop see my 3gb..) ?
Hello
Why top command doesn''t return correct memory amount (xentop see my
3gb..) ?
I''ve compiled my kernel with 4GB high mem support ...
#xentop
xentop - 01:16:21 Xen 3.0.2-3
6 domains: 1 running, 5 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 3144744k total, 2947952k used, 196792k free CPUs: 2 @ 3000MHz
NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k)
MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) SSID
Domain-0 -----r 162 0.0 2050268 65.2 no limit
n/a 2 8 7605 61335 0
ldap --b--- 36 0.0 200512 6.4 200704
6.4 1 1 2423 74941 0
mail --b--- 65 0.0 200448 6.4 200704
6.4 1 1 5519 46455 0
ns --b--- 245 0.0 130900 4.2 131072
4.2 1 1 8263 59350 0
snmp --b--- 548 0.0 200488 6.4 200704
6.4 1 1 13894 48256 0
www --b--- 34 0.0 130924 4.2 131072
4.2 1 1 1140 59911 0
#top
top - 01:16:44 up 12:21, 1 user, load average: 0.00, 0.00, 0.00
Tasks: 70 total, 2 running, 66 sleeping, 2 stopped, 0 zombie
Cpu(s): 0.0% us, 0.0% sy, 0.0% ni, 99.5% id, 0.5% wa, 0.0% hi, 0.0% si
Mem: 2050048k total, 227024k used, 1823024k free, 33464k buffers
Swap: 0k total, 0k used, 0k free, 57044k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 16 0 1580 516 452 S 0.0 0.0 0:00.97 init
2 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
4 root RT 0 0 0 0 S 0.0 0.0 0:00.03 migration/1
5 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/1
6 root 10 -5 0 0 0 S 0.0 0.0 0:00.54 events/0
7 root 10 -5 0 0 0 S 0.0 0.0 0:00.35 events/1
8 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 khelper
it''s little bite anoying for dom0 snmp monitoring ...
any ideas or solution ?
regars
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Petersson, Mats
2006-Oct-13 09:43 UTC
RE: [Xen-users] Why top command doesn''t return correct memory amount (xentop see my 3gb..) ?
> -----Original Message----- > From: xen-users-bounces@lists.xensource.com > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of > Sébastien CRAMATTE > Sent: 13 October 2006 00:15 > To: xen-users@lists.xensource.com > Subject: [Xen-users] Why top command doesn''t return correct > memory amount (xentop see my 3gb..) ? > > Hello > > Why top command doesn''t return correct memory amount (xentop see my > 3gb..) ? > I''ve compiled my kernel with 4GB high mem support ...Because TOP and XENTOP show different things... Xentop shows how much memory is used/available in all domains. Top on any particular machine (such as domain0) will show the amount of memory available in THAT virtual machine. Dom0 is a virtual machine just like any other domain in xen - it''s only special because it can access hardware and has privileges to create/kill other domains etc. If you compare the amoutn of memory in Dom0 in Xentop: 2050268 with the amoutn shown by top 2050048, you can see that they aren''t very far apart. -- Mats> > #xentop > xentop - 01:16:21 Xen 3.0.2-3 > 6 domains: 1 running, 5 blocked, 0 paused, 0 crashed, 0 > dying, 0 shutdown > Mem: 3144744k total, 2947952k used, 196792k free CPUs: 2 @ 3000MHz > NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) > MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) SSID > Domain-0 -----r 162 0.0 2050268 65.2 no limit > n/a 2 8 7605 61335 0 > ldap --b--- 36 0.0 200512 6.4 200704 > 6.4 1 1 2423 74941 0 > mail --b--- 65 0.0 200448 6.4 200704 > 6.4 1 1 5519 46455 0 > ns --b--- 245 0.0 130900 4.2 131072 > 4.2 1 1 8263 59350 0 > snmp --b--- 548 0.0 200488 6.4 200704 > 6.4 1 1 13894 48256 0 > www --b--- 34 0.0 130924 4.2 131072 > 4.2 1 1 1140 59911 0 > > #top > top - 01:16:44 up 12:21, 1 user, load average: 0.00, 0.00, 0.00 > Tasks: 70 total, 2 running, 66 sleeping, 2 stopped, 0 zombie > Cpu(s): 0.0% us, 0.0% sy, 0.0% ni, 99.5% id, 0.5% wa, > 0.0% hi, 0.0% si > Mem: 2050048k total, 227024k used, 1823024k free, > 33464k buffers > Swap: 0k total, 0k used, 0k free, > 57044k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 1 root 16 0 1580 516 452 S 0.0 0.0 0:00.97 init > 2 root RT 0 0 0 0 S 0.0 0.0 0:00.00 > migration/0 > 3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 > ksoftirqd/0 > 4 root RT 0 0 0 0 S 0.0 0.0 0:00.03 > migration/1 > 5 root 34 19 0 0 0 S 0.0 0.0 0:00.00 > ksoftirqd/1 > 6 root 10 -5 0 0 0 S 0.0 0.0 0:00.54 events/0 > 7 root 10 -5 0 0 0 S 0.0 0.0 0:00.35 events/1 > 8 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 khelper > > > it''s little bite anoying for dom0 snmp monitoring ... > any ideas or solution ? > > regars > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users > > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi, Does anyone know whether (and if, how) the following feature is supported by xen? In vmware, I use serial connections between guest systems as follows: o Add a serial device (max 4) to a guest. This will become /dev/ttyS0-3 in the guest filesystem. o Define it as ''server'' with as endpoint a named socket on the host filesystem (eg /tmp/serial1.1) Do the same on another guest system, but use the name /tmp/serial2.1 for the socket. Make a program on the host system that relays data from/to /tmp/serial1.1 to/from /tmp/serial2.1 Basically I have now a bidirectional serial connection between the guests. Programs running on the guest systems can use /dev/ttySx to communicate to the other guest. Is this possible in Xen as well? Thanks J.J. Krabbendam. -- This message has been scanned for viruses and is believed to be clean _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users