More stuff pertaining my my mis-behaving server... I posted some Qs about this around a week ago, but in case you don't recall: I have a PowerEdge 6450 w/ 8 GB RAM, 6 disk RAID5 that we're trying to use as a MySQL server that's intermitenttly locking up. I'm trying to detirmine the source of the problem One curious thing is that when I try to run memtest86 it locks up cold as soon as it boots into the program. You can see screen shots here: http://www.centraltexasit.com/~jw/memtest86_lockup/ I'm not sure, but it looks like maybe it's not seeing all the memory. One line says "Memory 3584MB". 8GB or RAM should be about twice that much. Is memtest86 capable of handling that much RAM, is this a bug in the program? If not, is this a sign that there's something wrong with some of our RAM (I would think so)? Ideas/ opinions/suggestions appreciated. -- ---------------------------------------------------- Jonathan Wilson System Administrator Clickpatrol.com Cedar Creek Software http://www.cedarcreeksoftware.com
Well I assume you recompiled your kernel with support for more memory. I do believe 2.2.18 was limited to 1GB RAM and 4GB RAM on 2.4.X... I have no idea if it's something like that in memtest as well. /Magnus JW wrote:
More stuff pertaining my my mis-behaving server...
I posted some Qs about this around a week ago, but in case you don't recall: I have a PowerEdge 6450 w/ 8 GB RAM, 6 disk RAID5 that we're trying to use as a MySQL server that's intermitenttly locking up. I'm trying to detirmine the source of the problem
One curious thing is that when I try to run memtest86 it locks up cold as soon as it boots into the program.
You can see screen shots here:
http://www.centraltexasit.com/~jw/memtest86_lockup/
I'm not sure, but it looks like maybe it's not seeing all the memory. One line says "Memory 3584MB". 8GB or RAM should be about twice that much.
Is memtest86 capable of handling that much RAM, is this a bug in the program?
If not, is this a sign that there's something wrong with some of our RAM (I would think so)?
Ideas/ opinions/suggestions appreciated.
-- \\|// (o o) /=================================================oOOo=(_)=oOOo========\ | Magnus Hagebris Linux Software Engineer | | IP Dynamics, Inc. email: mhagebris@ipdynamics.com | | 1901 South Bascom Ave. Suite #500 voice: (408) 369 6900 ext 149 | | Campbell, CA, 95008 http://www.ipdynamics.com | | USA | \======================================================================/
MH >Well I assume you recompiled your kernel with support for more memory. MH >I do believe 2.2.18 was limited to 1GB RAM and 4GB RAM on 2.4.X... MH >I have no idea if it's something like that in memtest as well. MH >/Magnus Well, actually, I was under the impression that the smp kernels were compiled with large memory support, 64GB IIRC. Though I cannot remember now what it was that gave me that impression. Anyone know for sure? -- ---------------------------------------------------- Jonathan Wilson System Administrator Clickpatrol.com Cedar Creek Software http://www.cedarcreeksoftware.com
On Wednesday 08 May 2002 00:33, JW wrote:
Anyone know for sure?
The kernel does andjoh@winona:~> uname -a Linux winona 2.4.18-64GB-SMP #1 SMP Wed Mar 27 13:58:12 UTC 2002 i686 unknown Of course, SuSE could theoretically have named it -64GB as a sick joke, so just to make sure andjoh@winona:~> zgrep CONFIG_HIGHMEM /proc/config.gz |grep -v ^# CONFIG_HIGHMEM64G=y CONFIG_HIGHMEM=y //Anders
* JW (jw@centraltexasit.com) [020507 14:54]:
One curious thing is that when I try to run memtest86 it locks up cold as soon as it boots into the program.
Then it's pretty clearly not a linux problem since memtest86 is OS independent...I'd send it back to the vendor. -- -ckm
same happened to me ~ in my case the reason was :- CPU fan was not working properly . CPU over-heated. best wishes ____________ sent on Linux ____________
On Wednesday 08 May 2002 11:44 am, you wrote:
* JW (jw@centraltexasit.com) [020507 14:54]:
One curious thing is that when I try to run memtest86 it locks up cold as soon as it boots into the program.
Then it's pretty clearly not a linux problem since memtest86 is OS independent...I'd send it back to the vendor.
Yeah... FYI it looks like the problem is that one of the 16 (oww) sticks of RAM wasn't seated properly. You'd think for $50,000 Dell could have someone make sure all the memory/cards were seated properly. I'm not terribly ammused by that. But after re-seating all the RAM memtext86 works much better. Thanks. JW
* JW (jw@centraltexasit.com) [020509 07:26]:
Yeah... FYI it looks like the problem is that one of the 16 (oww) sticks of RAM wasn't seated properly.
:)
You'd think for $50,000 Dell could have someone make sure all the memory/cards were seated properly.
I'm not terribly ammused by that.
I've seen cards and CPUs vibrate out during transport so maybe it's not their fault, but for $50K they should hand deliver and test it in front of you. -- -ckm
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