[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] xen does not see more than 173800500k of memory
This seems to correspond to the truncation at 166Gb for 32on64 support (see xen/arch/x86/e820.c:machine_specific_memory_setup()). There used to be a command line options to disallow creation of compat mode guests (thereby allowing all memory to be used), but that option went away with fairly recent changes. Jan >>> "Krysan, Susan" <KRYSANS@xxxxxxxxxx> 23.08.07 00:33 >>> Our test server (Unisys ES7000) has recently been upgraded with more processors and more memory, so I am testing x86_64 xen with 64 cpus and 192gb. I compiled xen with max_phys_cpus=64 and debug=y. xen sees the 64 cpus, but only sees 173800500k of the 192gb. I booted dom0 with 2048M and numa=on. I get the same result when I configure the server to have 176gb (xen still sees only 173800500k). Booting without numa=on makes no difference. xentop - 14:48:42 Xen 3.0-unstable 1 domains: 1 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown Mem: 173800500k total, 4324748k used, 169475752k free CPUs: 64 @ 3400MHz NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO VBD_RD VBD_WR SSID Domain-0 -----r 95 0.0 2097152 1.2 no limit n/a 32 0 0 0 0 0 0 0 0 When I configure the server with 160gb or less, xen sees all of the memory. Also, when I boot with the SLES kernel, SLES can see the all of the memory. I assume there is not a memory limit on xen. I would greatly appreciate any help to resolve this problem. Thanks, Sue Krysan Linux Systems Group Unisys Corporation _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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