Hi all, After upgrading to 2.3 I have experienced very poor performance on openvz using shared storage on NFS. I have an owncloud server which before upgrading only needed milliseconds to load any page and no loading any pages takes more than 30 seconds! I have tried any optimization setting in the book so I a have reached a grinding halt:-)
To eliminate storage problems I created a clone of this server but
installed it in a KVM server instead on the same node. Every setting,
configuration, ressource, and storage are exactly identical so the only
difference is the clone is running in KVM while the original is running
OpenVZ.
The cloned server performs exactly like the OpenVZ server did before
upgrading to 2.3 so something has to be broken in the OpenVZ
implementation in kernel 2.6.32-19-pve.
Some background info of the node:
# free
total used free shared buffers cached
Mem: 8136076 2276328 5859748 0 18460 106792
-/+ buffers/cache: 2151076 5985000
Swap: 7811064 61776 7749288
# pvectl list
VMID NAME STATUS MEM(MB) DISK(GB)
101 repo running 512 1.00
105 www stopped 1024 15.00
106 wheezy stopped 512 4.00
112 owncloud running 1024 30.00
# qm list
VMID NAME STATUS MEM(MB) BOOTDISK(GB) PID
107 nas-test stopped 256 4.00 0
115 balder running 512 20.00 27819
121 pve-storage2 stopped 1024 4.00 0
124 debian7-rc1 stopped 1024 16.00 0
127 mint-debian stopped 1024 20.00 0
128 owncloud1 running 1024 30.00
112832
# pveperf
CPU BOGOMIPS: 23998.08
REGEX/SECOND: 1112048
HD SIZE: 3.66 GB (/dev/mapper/pve-root)
BUFFERED READS: 69.55 MB/sec
AVERAGE SEEK TIME: 8.05 ms
FSYNCS/SECOND: 668.49
DNS EXT: 60.14 ms
DNS INT: 1.25 ms (datanom.net)
cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 5
model name : AMD Athlon(tm) II X4 640 Processor
stepping : 3
cpu MHz : 2999.760
cache size : 512 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext
fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good
nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm
extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit
wdt nodeid_msr npt lbrv svm_lock nrip_save
bogomips : 5999.52
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
......
Anything particularly I should dig into?
If anybody of you want to have a closer look I can provide full access
to both owncloud and the shell vis ssh on both 'VM's'?
--
Hilsen/Regards
Michael Rasmussen
Get my public GnuPG keys:
michael <at> rasmussen <dot> cc
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xD3C9A00E
mir <at> datanom <dot> net
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE501F51C
mir <at> miras <dot> org
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE3E80917
--------------------------------------------------------------
Experience is what you get when you were expecting something else.
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