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11-04-2014 08:53 AM - last edited on 11-12-2014 05:35 PM by Maiko-I
11-04-2014 08:53 AM - last edited on 11-12-2014 05:35 PM by Maiko-I
Memory usage on ia64 hp Integrity Virtual Partition
Need to understand how memory is used on the Virtual server. The Glance report show memory is 100% and swap usage around 83%
Glance 11.11.025 16:49:46 Server ia64 Current Avg High
------------------------------------------------------------------------------------------------------------------------------------------------------
CPU Util SU U | 53% 53% 53%
Disk Util F F | 4% 4% 4%
Mem Util S SU UF F |100% 100% 100%
Swap Util U UR R | 83% 83% 83%
Total VM : 15.9gb Sys Mem : 3.1gb User Mem: 11.6gb Phys Mem : 16.0gb
Active VM: 6.5gb Buf Cache: 0mb Free Mem: 71mb FileCache: 1.2gb
MemFS Blk Cnt: 0 MemFS Swp Cnt: 0
Swap usage:
#swapinfo -tam
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 8192 1189 7003 15% 0 - 1 /dev/vg00/lvol2
reserve - 7003 -7003
memory 16328 12277 4051 75%
total 24520 20469 4051 83% - 0 -
Please assist in understanding if this is a memory bottleneck. Do I need to allocate more memory to this virtual server?
There is no performance issue observed on the server, however I am worried that the glance shows memory as 100%.
P.S. This thread has been moved from HP-UX > System Administration to HP-UX > virtualization. - Hp Forum Moderator
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11-10-2014 10:00 PM
11-10-2014 10:00 PM
Re: Memory usage on ia64 hp Integrity Virtual Partition
Hi ,
Its an IVM or VPAR guest ??
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11-12-2014 10:28 AM - edited 11-12-2014 10:29 AM
11-12-2014 10:28 AM - edited 11-12-2014 10:29 AM
Re: Memory usage on ia64 hp Integrity Virtual Partition
Installation of the IntegrityVM BB068AA bundle at 11i v3 changes several kernel tunables as follows:
maxdsiz_64bit -> 34359738368
filecache_min -> ${CACHE_SZ}*
filecache_max -> ${CACHE_SZ}*
lockable_mem_pct -> 99%
base_pagesize -> 64
vx_ninode -> 131072
vxfs_ifree_timelag -> -1
vxfs_bc_bufhwm -> 64000
* where CACHE_SZ is (1) 134,217,728 if `getconf MEM_MBYTES` returns a value >= 13,421, or (2) 1% otherwise.
For us this shows up as 100% memory usage, and I believe that is what it is expected to show for a VM. But it's bad news if you accidently load the bundle on a non-VM OS instance.
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11-12-2014 11:58 PM
11-12-2014 11:58 PM
Re: Memory usage on ia64 hp Integrity Virtual Partition
Yes, your vPar is under memory pressure and you should add some memory, based on swapinfo, it should be at least 2G more. Newer HPVM versions allow dynamic addition of memory - see whitepaper under www.hp.com/go/hpux-hpvm-docs
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11-13-2014 05:47 AM
11-13-2014 05:47 AM
Re: Memory usage on ia64 hp Integrity Virtual Partition
BB068AA should only be installed on the bare-metal system or nPar acting as the hypervisor. That product does tune the kernel specifically to free up physical memory so that the hypervisor can use the memory for VM or vPar guests. This product should *not* be installed inside a VM or vPar virtual server.
Even with this product installed on the physical system, I typically see the physical hypervisor running at around 90% physical memory utilization, not 100%. This is by design. If you are referring to a vPar that is running at 100% memory then I would assign more memory to the vPar as Stan has recommended.
To be clear - is the system under memory pressure you are asking about the physical server running BB068AA (i.e. the hypervisor or VSP) or is it a vPar? What specific version of Integrity VM/vPars are you running?
Dave
[Any personal opinions expressed are mine, and not official statements on behalf of Hewlett Packard Enterprise]