LabVIEW pegs CPU usage after running VIs
Hey folks,
this is a general inquiry simply because I don't think I could explain (nor upload) all of the complex pieces of the code involved in the creation of the isue I'm having. Long story short, I have several processes, the main proc calls up two others, there is some information exchanged between procs etc in the initialization process as expected, and there are also several errors that occur (still in the process of debugging it). The problem occurs when the processes are exited. All VIs stop running as they should, however something in the background (no visual prescence) has my CPU pegged at just under 100% and I have to kill LabVIEW in the task manager or wait for it to slowly respond to me telling it to quit/exit...
My question is, has anyone else ever had this issue? if so, could you point me in a direction that may help me find the culprit in my case? I've had plenty of situations when I started VIs that wouldn't stop due to the loop conditions I ut in place, but in this case all VIs show to be stopped...
Thanks for any ideas
you guys are quick! thanks for the help! (kudos to you!)
I don't see the data trace execution toolkit, but I think we have a lic for it... I'll have to download it.
regard to altenbach's questions:
How does the main process call the others?
One is an async call (remote interface)- the other is call by ref (GUI). When this first happened, I figured the one I called async was stuck running, but when I brought it up it was stopped...
How is information exchanged between processes?
Mostly by User events that are held in an individual api VI for each proc, very little is done via 'remote enqueue' (only the exit of the two sub proc's are done that way right now)
How does the quit/exit dialog look like?
There isnt a separate dialog, but the execution of the exit/quit button seems to go just fine, doesnt hang while pressed or anything.
What is your LabVIEW version?
2011
Are you opening an infinite number of references, trying to allocate an infinite amount of memory, or similar?
It may be that I'm opening a new ref each time... I'm gonna have to look into this.. thanks!
again thanks for all your help
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Hi,
I posted this question on stackoverflow earlier this week but feel it might be better suited to the LabVIEW community specifically so I'm reposting here:
I'm writing an application which uses the Google Earth Plugin to display events on the globe. Each event is a single point kml placemark with an icon which is a 3kb png file. Placemarks are uploaded to the plugin as they are received by the software. I am experiencing increasing CPU usage with the number of placemarks that are added.
I have tested displaying a new placemark every second and running until the software running the plugin completely froze (graph attached). The GEPlugin (green trace) stopped responding (i.e. the globe did not respond to the mouse) at around 1200 placemarks added and CPU usage was at ~30%. When the software itself (red trace) froze the plugin was using around 50% CPU and ~3700 placemarks had been added). After the freeze, no new placemarks were added which caused the software to respond (but not the plugin) so I could clear all the placemarks. After the placemarks were cleared from the globe, the CPU usage of the plugin returned to around 5% CPU.
So what I've seen is that GEPlugin CPU usage increases linearly with each kml placemark added. Is this the expected behaviour/ a normal limitation of the plugin? If not is there a more efficient way of adding many placemarks to the globe?
I am using GEPlugin version 7.1.1.1580 (API version 1.010) and LabVIEW 12.0f3
Please see the test results attached. Any input greatly appreciated!
Original stackoverflow post:
http://stackoverflow.com/questions/20994323/google-earth-plugin-with-labview-high-cpu-usage-when-add...
Attachments:
Performance Log 020114_095115.png 82 KBHello,
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SharedLibs: 9128K resident, 8192K data, 0B linkedit.
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Notes that could be important (The behavior encountered while using it. This varies from time to time):
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==> The above makes sense
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==> The above seems odd
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If you need further details, feel free to ask.
Thanks in advanceTried those before and tried them again. Unfortunately, the problem keeps repeating itself at random times. As said, sometimes it doesn't occur and sometimes suddenly it does. Keep the following things in mind about this, what seems like a heisenbug, behavior.
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Again, thanks in advance -
100% CPU Usage Overhead running EM DBConsole 11g on OEL-5.2
After upgrading to OEL-5.2 and relinking all Oracle binaries, my old Oracle 11g installation, installed several months before on OEL-5.1, has been working well, including Enterprise Manager Database Console working nicely as always with respectful performance. Unfortunatelly, it lasted just several days.
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I was really puzzled since I installed and reinstalled the 11g at least 20 times on OEL-5.0 and 5.1, experimenting with ASM, raw devices, loopback devices and various combinations of installation options, but never experienced such a behaviour. It took me 3 minutes to log in to EM dbconsole as it was almost unusable performing too slow. After three hours CPU temperature was nearly 60 degrees celsius. I decided to shutdown EM and after that everything became quiet. Oracle was running normally. Started EM again, the problem was back again. Tracing enabled, it filled a 350 MB trace file in just 20 minutes. Reinstalling the software and database once again didn't help. Whenever EM is up, the CPU usage overhead of 99% persists.
Here is a cca 23 minutes session summary report taken from EM dbconsole's Performance page. The trace file is too big to list it here, but it shows the same.
Host CPU: 100%
Active Sessions: 100%The details for the Selected 5 Minute Interval (the last 5 min interval) are shown as follow:
TOP SESSIONS: SYSMAN, Program: OMS
Activity: 100%
TOP MODULES: OEM.CacheModeWaitPool, Service: orcl
Activity: 100%
TOP CLIENT: Unnamed
Activity: 99.1%
TOP ACTIONS: Unnamed (OEM.CacheModeWaitPool) (orcl)
Activity: 100%
TOP OBJECTS: SYSMAN.MGMT_JOB_EXEC_SUMMARY (Table)
Activity: 100%
TOP PL/SQL: SYSMAN.MGMT_JOB_ENGINE.INSERT_EXECUTION
PL/SQL Source: SYSMAN.MGMT_JOB_ENGINE
Line Number: 7135
Activity: 100%
TOP SQL: SELECT EXECUTION_ID, STATUS, STATUS_DETAIL FROM MGMT_JOB_EXEC_SUMMARY
WHERE JOB_ID = :B3 AND TARGET_LIST_INDEX = :B2 AND EXPECTED_START_TIME = :B1;
Activity: 100%
STATISTICS SUMMARY
cca 23 minutes session
with no other system activity
Per
Total Execution Per Row
Executions 105,103 1 10,510.30
Elapsed Time (sec) 1,358.95 0.01 135.90
CPU Time (sec) 1,070.42 0.01 107.04
Buffer Gets 85,585,518 814.30 8,558,551.80
Disk Reads 2 <0.01 0.20
Direct Writes 0 0.00 0.00
Rows 10 <0.01 1
Fetches 105,103 1.00 10,510.30
----------------------------------------Wow!!! Note: no disk, no database activity !
Has anyone experienced this or similar behaviour after clean 11g installation on OEL-5.2? If not, anyone has a clue what the hell is going on?
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DBConsole easting a CPU
11g stuck. 50-100% CPU after fresh install
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3. Using dbca, I dropped the database and created the new one with the same configuration options. Wow! I'm again in trouble. A half an hour after the creation of the database, %CPU raised up to 99%. That's it.
The crucial question here is: what is that in OEL-5.2, not existing in the 5.0, that causes dbca/em scripts to be embarrassed at the time of EM agent configuration?
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Kernel command line: ro root=LABEL=/ elevator=deadline rhgb quiet
[root@localhost ~]# cat /proc/meminfo
MemTotal: 1034576 kB
MemFree: 27356 kB
Buffers: 8388 kB
Cached: 609660 kB
SwapCached: 18628 kB
Active: 675376 kB
Inactive: 287072 kB
HighTotal: 130304 kB
HighFree: 260 kB
LowTotal: 904272 kB
LowFree: 27096 kB
SwapTotal: 3148700 kB
SwapFree: 2940636 kB
Dirty: 72 kB
Writeback: 0 kB
AnonPages: 328700 kB
Mapped: 271316 kB
Slab: 21136 kB
PageTables: 14196 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 3665988 kB
Committed_AS: 1187464 kB
VmallocTotal: 114680 kB
VmallocUsed: 5860 kB
VmallocChunk: 108476 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
Hugepagesize: 4096 kB
[root@localhost ~]# cat /proc/slabinfo
slabinfo - version: 2.1
# name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab> : tunables <limit> <batchcount> <sharedfactor> : slabdata <active_slabs> <num_slabs> <sharedavail>
rpc_buffers 8 8 2048 2 1 : tunables 24 12 8 : slabdata 4 4 0
rpc_tasks 8 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
rpc_inode_cache 6 7 512 7 1 : tunables 54 27 8 : slabdata 1 1 0
ip_conntrack_expect 0 0 96 40 1 : tunables 120 60 8 : slabdata 0 0 0
ip_conntrack 68 68 228 17 1 : tunables 120 60 8 : slabdata 4 4 0
ip_fib_alias 7 113 32 113 1 : tunables 120 60 8 : slabdata 1 1 0
ip_fib_hash 7 113 32 113 1 : tunables 120 60 8 : slabdata 1 1 0
fib6_nodes 22 113 32 113 1 : tunables 120 60 8 : slabdata 1 1 0
ip6_dst_cache 13 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
ndisc_cache 1 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
RAWv6 4 5 768 5 1 : tunables 54 27 8 : slabdata 1 1 0
UDPv6 9 12 640 6 1 : tunables 54 27 8 : slabdata 2 2 0
tw_sock_TCPv6 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
request_sock_TCPv6 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
TCPv6 1 3 1280 3 1 : tunables 24 12 8 : slabdata 1 1 0
jbd_1k 0 0 1024 4 1 : tunables 54 27 8 : slabdata 0 0 0
dm_mpath 0 0 28 127 1 : tunables 120 60 8 : slabdata 0 0 0
dm_uevent 0 0 2460 3 2 : tunables 24 12 8 : slabdata 0 0 0
dm_tio 0 0 16 203 1 : tunables 120 60 8 : slabdata 0 0 0
dm_io 0 0 20 169 1 : tunables 120 60 8 : slabdata 0 0 0
jbd_4k 1 1 4096 1 1 : tunables 24 12 8 : slabdata 1 1 0
scsi_cmd_cache 10 10 384 10 1 : tunables 54 27 8 : slabdata 1 1 0
sgpool-128 36 36 2048 2 1 : tunables 24 12 8 : slabdata 18 18 0
sgpool-64 33 36 1024 4 1 : tunables 54 27 8 : slabdata 9 9 0
sgpool-32 34 40 512 8 1 : tunables 54 27 8 : slabdata 5 5 0
sgpool-16 35 45 256 15 1 : tunables 120 60 8 : slabdata 3 3 0
sgpool-8 60 60 128 30 1 : tunables 120 60 8 : slabdata 2 2 0
scsi_io_context 0 0 104 37 1 : tunables 120 60 8 : slabdata 0 0 0
ext3_inode_cache 4376 8216 492 8 1 : tunables 54 27 8 : slabdata 1027 1027 0
ext3_xattr 165 234 48 78 1 : tunables 120 60 8 : slabdata 3 3 0
journal_handle 8 169 20 169 1 : tunables 120 60 8 : slabdata 1 1 0
journal_head 684 1008 52 72 1 : tunables 120 60 8 : slabdata 14 14 0
revoke_table 18 254 12 254 1 : tunables 120 60 8 : slabdata 1 1 0
revoke_record 0 0 16 203 1 : tunables 120 60 8 : slabdata 0 0 0
uhci_urb_priv 0 0 28 127 1 : tunables 120 60 8 : slabdata 0 0 0
UNIX 56 112 512 7 1 : tunables 54 27 8 : slabdata 16 16 0
flow_cache 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
cfq_ioc_pool 0 0 92 42 1 : tunables 120 60 8 : slabdata 0 0 0
cfq_pool 0 0 96 40 1 : tunables 120 60 8 : slabdata 0 0 0
crq_pool 0 0 44 84 1 : tunables 120 60 8 : slabdata 0 0 0
deadline_drq 140 252 44 84 1 : tunables 120 60 8 : slabdata 3 3 0
as_arq 0 0 56 67 1 : tunables 120 60 8 : slabdata 0 0 0
mqueue_inode_cache 1 6 640 6 1 : tunables 54 27 8 : slabdata 1 1 0
isofs_inode_cache 0 0 368 10 1 : tunables 54 27 8 : slabdata 0 0 0
hugetlbfs_inode_cache 1 11 340 11 1 : tunables 54 27 8 : slabdata 1 1 0
ext2_inode_cache 0 0 476 8 1 : tunables 54 27 8 : slabdata 0 0 0
ext2_xattr 0 0 48 78 1 : tunables 120 60 8 : slabdata 0 0 0
dnotify_cache 2 169 20 169 1 : tunables 120 60 8 : slabdata 1 1 0
dquot 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
eventpoll_pwq 1 101 36 101 1 : tunables 120 60 8 : slabdata 1 1 0
eventpoll_epi 1 30 128 30 1 : tunables 120 60 8 : slabdata 1 1 0
inotify_event_cache 1 127 28 127 1 : tunables 120 60 8 : slabdata 1 1 0
inotify_watch_cache 23 92 40 92 1 : tunables 120 60 8 : slabdata 1 1 0
kioctx 135 135 256 15 1 : tunables 120 60 8 : slabdata 9 9 0
kiocb 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
fasync_cache 0 0 16 203 1 : tunables 120 60 8 : slabdata 0 0 0
shmem_inode_cache 553 585 436 9 1 : tunables 54 27 8 : slabdata 65 65 0
posix_timers_cache 0 0 88 44 1 : tunables 120 60 8 : slabdata 0 0 0
uid_cache 5 59 64 59 1 : tunables 120 60 8 : slabdata 1 1 0
ip_mrt_cache 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
tcp_bind_bucket 32 203 16 203 1 : tunables 120 60 8 : slabdata 1 1 0
inet_peer_cache 1 59 64 59 1 : tunables 120 60 8 : slabdata 1 1 0
secpath_cache 0 0 32 113 1 : tunables 120 60 8 : slabdata 0 0 0
xfrm_dst_cache 0 0 384 10 1 : tunables 54 27 8 : slabdata 0 0 0
ip_dst_cache 6 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
arp_cache 2 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
RAW 2 7 512 7 1 : tunables 54 27 8 : slabdata 1 1 0
UDP 3 7 512 7 1 : tunables 54 27 8 : slabdata 1 1 0
tw_sock_TCP 3 30 128 30 1 : tunables 120 60 8 : slabdata 1 1 0
request_sock_TCP 4 30 128 30 1 : tunables 120 60 8 : slabdata 1 1 0
TCP 43 49 1152 7 2 : tunables 24 12 8 : slabdata 7 7 0
blkdev_ioc 3 127 28 127 1 : tunables 120 60 8 : slabdata 1 1 0
blkdev_queue 23 24 956 4 1 : tunables 54 27 8 : slabdata 6 6 0
blkdev_requests 137 161 172 23 1 : tunables 120 60 8 : slabdata 7 7 0
biovec-256 7 8 3072 2 2 : tunables 24 12 8 : slabdata 4 4 0
biovec-128 7 10 1536 5 2 : tunables 24 12 8 : slabdata 2 2 0
biovec-64 7 10 768 5 1 : tunables 54 27 8 : slabdata 2 2 0
biovec-16 7 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
biovec-4 8 59 64 59 1 : tunables 120 60 8 : slabdata 1 1 0
biovec-1 406 406 16 203 1 : tunables 120 60 8 : slabdata 2 2 300
bio 564 660 128 30 1 : tunables 120 60 8 : slabdata 21 22 204
utrace_engine_cache 0 0 32 113 1 : tunables 120 60 8 : slabdata 0 0 0
utrace_cache 0 0 32 113 1 : tunables 120 60 8 : slabdata 0 0 0
sock_inode_cache 149 230 384 10 1 : tunables 54 27 8 : slabdata 23 23 0
skbuff_fclone_cache 20 20 384 10 1 : tunables 54 27 8 : slabdata 2 2 0
skbuff_head_cache 86 210 256 15 1 : tunables 120 60 8 : slabdata 14 14 0
file_lock_cache 22 40 96 40 1 : tunables 120 60 8 : slabdata 1 1 0
Acpi-Operand 1147 1196 40 92 1 : tunables 120 60 8 : slabdata 13 13 0
Acpi-ParseExt 0 0 44 84 1 : tunables 120 60 8 : slabdata 0 0 0
Acpi-Parse 0 0 28 127 1 : tunables 120 60 8 : slabdata 0 0 0
Acpi-State 0 0 44 84 1 : tunables 120 60 8 : slabdata 0 0 0
Acpi-Namespace 615 676 20 169 1 : tunables 120 60 8 : slabdata 4 4 0
delayacct_cache 233 312 48 78 1 : tunables 120 60 8 : slabdata 4 4 0
taskstats_cache 12 53 72 53 1 : tunables 120 60 8 : slabdata 1 1 0
proc_inode_cache 622 693 356 11 1 : tunables 54 27 8 : slabdata 63 63 0
sigqueue 8 27 144 27 1 : tunables 120 60 8 : slabdata 1 1 0
radix_tree_node 6220 8134 276 14 1 : tunables 54 27 8 : slabdata 581 581 0
bdev_cache 37 42 512 7 1 : tunables 54 27 8 : slabdata 6 6 0
sysfs_dir_cache 4980 4992 48 78 1 : tunables 120 60 8 : slabdata 64 64 0
mnt_cache 36 60 128 30 1 : tunables 120 60 8 : slabdata 2 2 0
inode_cache 1113 1254 340 11 1 : tunables 54 27 8 : slabdata 114 114 81
dentry_cache 11442 18560 136 29 1 : tunables 120 60 8 : slabdata 640 640 180
filp 7607 10000 192 20 1 : tunables 120 60 8 : slabdata 500 500 120
names_cache 19 19 4096 1 1 : tunables 24 12 8 : slabdata 19 19 0
avc_node 14 72 52 72 1 : tunables 120 60 8 : slabdata 1 1 0
selinux_inode_security 814 1170 48 78 1 : tunables 120 60 8 : slabdata 15 15 0
key_jar 14 30 128 30 1 : tunables 120 60 8 : slabdata 1 1 0
idr_layer_cache 170 203 136 29 1 : tunables 120 60 8 : slabdata 7 7 0
buffer_head 38892 39024 52 72 1 : tunables 120 60 8 : slabdata 542 542 0
mm_struct 108 135 448 9 1 : tunables 54 27 8 : slabdata 15 15 0
vm_area_struct 11169 14904 84 46 1 : tunables 120 60 8 : slabdata 324 324 144
fs_cache 82 177 64 59 1 : tunables 120 60 8 : slabdata 3 3 0
files_cache 108 140 384 10 1 : tunables 54 27 8 : slabdata 14 14 0
signal_cache 142 171 448 9 1 : tunables 54 27 8 : slabdata 19 19 0
sighand_cache 127 135 1344 3 1 : tunables 24 12 8 : slabdata 45 45 0
task_struct 184 246 1360 3 1 : tunables 24 12 8 : slabdata 82 82 0
anon_vma 3313 5842 12 254 1 : tunables 120 60 8 : slabdata 23 23 0
pgd 84 84 4096 1 1 : tunables 24 12 8 : slabdata 84 84 0
pid 237 303 36 101 1 : tunables 120 60 8 : slabdata 3 3 0
size-131072(DMA) 0 0 131072 1 32 : tunables 8 4 0 : slabdata 0 0 0
size-131072 0 0 131072 1 32 : tunables 8 4 0 : slabdata 0 0 0
size-65536(DMA) 0 0 65536 1 16 : tunables 8 4 0 : slabdata 0 0 0
size-65536 2 2 65536 1 16 : tunables 8 4 0 : slabdata 2 2 0
size-32768(DMA) 0 0 32768 1 8 : tunables 8 4 0 : slabdata 0 0 0
size-32768 9 9 32768 1 8 : tunables 8 4 0 : slabdata 9 9 0
size-16384(DMA) 0 0 16384 1 4 : tunables 8 4 0 : slabdata 0 0 0
size-16384 6 6 16384 1 4 : tunables 8 4 0 : slabdata 6 6 0
size-8192(DMA) 0 0 8192 1 2 : tunables 8 4 0 : slabdata 0 0 0
size-8192 5 5 8192 1 2 : tunables 8 4 0 : slabdata 5 5 0
size-4096(DMA) 0 0 4096 1 1 : tunables 24 12 8 : slabdata 0 0 0
size-4096 205 205 4096 1 1 : tunables 24 12 8 : slabdata 205 205 0
size-2048(DMA) 0 0 2048 2 1 : tunables 24 12 8 : slabdata 0 0 0
size-2048 260 270 2048 2 1 : tunables 24 12 8 : slabdata 135 135 0
size-1024(DMA) 0 0 1024 4 1 : tunables 54 27 8 : slabdata 0 0 0
size-1024 204 204 1024 4 1 : tunables 54 27 8 : slabdata 51 51 0
size-512(DMA) 0 0 512 8 1 : tunables 54 27 8 : slabdata 0 0 0
size-512 367 464 512 8 1 : tunables 54 27 8 : slabdata 58 58 0
size-256(DMA) 0 0 256 15 1 : tunables 120 60 8 : slabdata 0 0 0
size-256 487 495 256 15 1 : tunables 120 60 8 : slabdata 33 33 0
size-128(DMA) 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
size-128 2242 2490 128 30 1 : tunables 120 60 8 : slabdata 83 83 0
size-64(DMA) 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0
size-32(DMA) 0 0 32 113 1 : tunables 120 60 8 : slabdata 0 0 0
size-64 1409 2950 64 59 1 : tunables 120 60 8 : slabdata 50 50 0
size-32 3596 3842 32 113 1 : tunables 120 60 8 : slabdata 34 34 0
kmem_cache 145 150 256 15 1 : tunables 120 60 8 : slabdata 10 10 0
[root@localhost ~]# slabtop -d 5
Active / Total Objects (% used) : 97257 / 113249 (85.9%)
Active / Total Slabs (% used) : 4488 / 4488 (100.0%)
Active / Total Caches (% used) : 101 / 146 (69.2%)
Active / Total Size (% used) : 15076.34K / 17587.55K (85.7%)
Minimum / Average / Maximum Object : 0.01K / 0.16K / 128.00K
OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME
25776 25764 99% 0.05K 358 72 1432K buffer_head
16146 15351 95% 0.08K 351 46 1404K vm_area_struct
15138 7779 51% 0.13K 522 29 2088K dentry_cache
9720 9106 93% 0.19K 486 20 1944K filp
7714 7032 91% 0.27K 551 14 2204K radix_tree_node
5070 5018 98% 0.05K 65 78 260K sysfs_dir_cache
4826 4766 98% 0.01K 19 254 76K anon_vma
4824 3406 70% 0.48K 603 8 2412K ext3_inode_cache
3842 3691 96% 0.03K 34 113 136K size-32
2190 2174 99% 0.12K 73 30 292K size-128
1711 1364 79% 0.06K 29 59 116K size-64
1210 1053 87% 0.33K 110 11 440K inode_cache
1196 1147 95% 0.04K 13 92 52K Acpi-Operand
1170 814 69% 0.05K 15 78 60K selinux_inode_security
936 414 44% 0.05K 13 72 52K journal_head
747 738 98% 0.43K 83 9 332K shmem_inode_cache
693 617 89% 0.35K 63 11 252K proc_inode_cache
676 615 90% 0.02K 4 169 16K Acpi-Namespace
609 136 22% 0.02K 3 203 12K biovec-1
495 493 99% 0.25K 33 15 132K size-256
480 384 80% 0.12K 16 30 64K bio
440 399 90% 0.50K 55 8 220K size-512
312 206 66% 0.05K 4 78 16K delayacct_cache
303 209 68% 0.04K 3 101 12K pid
290 290 100% 0.38K 29 10 116K sock_inode_cache
[root@localhost ~]# cat /etc/sysctl.conf
# Kernel sysctl configuration file for Red Hat Linux
# Controls IP packet forwarding
net.ipv4.ip_forward=0
# Controls source route verification
net.ipv4.conf.default.rp_filter=1
# Do not accept source routing
net.ipv4.conf.default.accept_source_route=0
# Oracle
net.ipv4.ip_local_port_range=1024 65000
net.core.rmem_default=4194304
net.core.rmem_max=4194304
net.core.wmem_default=262144
net.core.wmem_max=262144
net.ipv4.tcp_rmem=4096 65536 4194304
net.ipv4.tcp_wmem=4096 65536 4194304
# Keepalive Oracle
net.ipv4.tcp_keepalive_time=3000
net.ipv4.tcp_keepalive_intvl=30
net.ipv4.tcp_keepalive_probes=15
net.ipv4.tcp_retries2=3
net.ipv4.tcp_syn_retries=2
net.ipv4.tcp_sack=0
net.ipv4.tcp_timestamps=0
net.ipv4.tcp_window_scaling=0
# Oracle
fs.file-max = 6553600
fs.aio-max-nr=3145728
kernel.shmmni=4096
kernel.sem=250 32000 100 142
kernel.shmmax=2147483648
kernel.shmall=3279547
kernel.msgmnb=65536
kernel.msgmni=2878
kernel.msgmax=8192
kernel.exec-shield=0
# Controls the System Request debugging functionality of the kernel
kernel.sysrq=1
kernel.panic=60
kernel.core_uses_pid=1
[root@localhost ~]# free | grep Swap
Swap: 3148700 319916 2828784
[root@localhost ~]# cat /etc/fstab | grep "/dev/shm"
tmpfs /dev/shm tmpfs size=1024M 0 0
[root@localhost ~]# df | grep "/dev/shm"
tmpfs 1048576 452128 596448 44% /dev/shm
NON-DEFAULT DB PARAMETERS:
db_block_size 8192
memory_target 633339904 /* automatic memory management */
open_cursors 300
processes 256
disk_async_io TRUE
filesystemio_options SETALL -
High CPU usage while running a java program
Hi All,
Need some input regarding one issue I am facing.
I have written a simple JAVA program that lists down all the files and directories under one root directory and then copies/replicates them to another location. I am using java.nio package for copying the files. When I am running the program, everything is working fine. But the process is eating up all the memories and the CPU usage is reaching upto 95-100%. So the whole system is getting slowed down.
Is there any way I can control the CPU usage? I want this program to run silently without affecting the system or its performance.Hi,
Below is the code snippets I am using,
For listing down files/directories:
static void Process(File aFile, File aFile2) {
spc_count++;
String spcs = "";
for (int i = 0; i < spc_count; i++)
spcs += "-";
if(aFile.isFile()) {
System.out.println(spcs + "[FILE] " + aFile2.toURI().relativize(aFile.toURI()).getPath());
String newFile = dest + aFile2.toURI().relativize(aFile.toURI()).getPath();
File nf = new File(newFile);
try {
FileCopy.copyFile(aFile ,nf);
} catch (IOException ex) {
Logger.getLogger(ContentList.class.getName()).log(Level.SEVERE, null, ex);
} else if (aFile.isDirectory()) {
//System.out.println(spcs + "[DIR] " + aFile2.toURI().relativize(aFile.toURI()).getPath());
String newDir = dest + aFile2.toURI().relativize(aFile.toURI()).getPath();
File nd = new File(newDir);
nd.mkdir();
File[] listOfFiles = aFile.listFiles();
if(listOfFiles!=null) {
for (int i = 0; i < listOfFiles.length; i++)
Process(listOfFiles, aFile2);
} else {
System.out.println(spcs + " [ACCESS DENIED]");
spc_count--;
for copying files/directories:public static void copyFile(File in, File out)
throws IOException {
FileChannel inChannel = new
FileInputStream(in).getChannel();
FileChannel outChannel = new
FileOutputStream(out).getChannel();
try {
inChannel.transferTo(0, inChannel.size(),
outChannel);
catch (IOException e) {
throw e;
finally {
if (inChannel != null) inChannel.close();
if (outChannel != null) outChannel.close();
Please let me know if any better approach is there. But as I already said, currently it's eating up the whole memory.
Thanks in advance. -
CPU usage while running Bex report
Hello,
Sometimes, when I run a Bex report with many lines the computer CPU Usage is 100% (=full ) for a long time. In some cases i need to do restart again for the computer.
In the WAD it doesnt happened...
Did anybody have the same problem? Is there a way to reduce the CPU usage?
Please Advice,
AmirAmir,
This is "normal" behaviour in Bex with query's which return very long lists. The client computer already received all data, but is formatting the layout.
Solutions:
1) a faster pc with enough memory (512 mb) and win200 or >.
2) a query with less return rows.
The reason that in wad (web reporting) this is not experienced is because the formatting (rendering html) from the result table is done within the WAS (application server, which is hopefully faster then your PC...). Your browser only receives the html page..no exotic hardware needed for that..
Any questions left: please ask; if you're satisfied please grant with rewards.
Kind regards Patrick Rieken.
Message was edited by: Patrick Rieken -
High CPU usage after closing a program.
Okay, this is annoying. Doesn't happen on all programs, but too many.
When I close an application, in normal way, alt+f4/press x/file->quit the program quits, BUT, "ghost" application starts, which raises to 100% CPU usage. Then I have to close it via sigterm/sigkill. This has happened (atleast) with mplayer, nvidia-settings (which doesn't even start, but cpu usage raises to 100% anyway, and ghost application starts) and WoW thru Wine. Now, I have absolutely no idea what is going on, and I've found nothing on google.
I think it became after I upgraded to 2.6.29 kernel, it's 2.6.30 now and still the same.
A little help pleaseThe nvidia-settings starts, as it shows on system monitor (htop, etc) but I am not getting the window, and cpu usage raises to 100% instantly. Terminal output:
dfizzle@ohai ~$ nvidia-settings
The valid values for 'XVideoTextureContrast' are in the range -1000 - 1000
(inclusive).
'XVideoTextureContrast' can use the following target types: X Screen.
The valid values for 'XVideoTextureSaturation' are in the range -1000 -
1000 (inclusive).
'XVideoTextureSaturation' can use the following target types: X Screen. -
Labview hangs on exit after running VI with ActiveX
I have a vi with an ActiveX container which generates many events (30-50/sec). The events are serviced in queued mode. Among other things the ActiveX object polls internally for snapshot data from DSC Tags (rarely - only once per minute).
After the vi terminates there are two types of errors:
1. Labview can't close even though it is asked to from its main UI - it still resides as a process and is present in the task bar but there is no UI to it - something must be preventing it from closing.
2. After restarting, the VI hangs on the first call to the ActiveX object (create event queue)
Does anyone have an idea what can be happening? Can a large number of ActiveX events cause a problem resulting in Labview ins
tability? Are there any tools to find out what is causing it?
ThanksOne possibility is that it there is a very large number of unprocessed events in the queue when you stop the application, and it takes LV time to deallocate all the memory. I had this happen one due to control references that weren't geting closed. After running over night it could literally take LV over an hour to deallocate all the thousands of unclosed references left in memory.
Might be the same sort of thing going on. Watch LV's memory allocation in the Task Manager when you attempt to shut down and see if it is very large and then starts going down very slowly...
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps -
Labview consuming cpu with no running vi
I'm running Labview 2012 12.0f3 64 bit Professional.
When my laptop comes out of standby, Labview starts consuming 13% CPU with no running vi's.
There are several VI's open but not running.
This is very annoying.
Is this expected behaviour or a known problem?Could be related to this
LabVIEW Champion . Do more with less code and in less time . -
Yoga - Thinkpad message receiver for shortcut hot keys and 30 % CPU usage after lock screen or sleep
Hi! After returning from sleep or lock screen a process called "Thinkpad message receiver for shortcut hot keys" starts using about 30% of the CPU. Temps go upo to 60-70 degrees battery is being depleted quite fast. This process doesn't stop until I end it using task manager. Once ended that way, it doesn't start again even if I use sleep or lock screen. Need help with this!
I didn't use to have this problem like a month ago or so. Probably came into existence after some updates.
Solved!
Go to Solution.ChrisL_US wrote:
Do any of you have Kaspersky Anti-Virus or Internet Security? Seems like few T540 owners also got the same problem and one of them discovered it is Kaspersky causing the problem. I can comform it too.
I am using Kaspersky Internet Secuirty 2015, when I resume my TPY from sleep, the message receiver for shortcut hot keys will show up and use 20-35% processing power which cause the laptop to heat up.
I hope a Thinkpad rep can come in to report the bug.
The T540p post link: https://forums.lenovo.com/t5/T400-T500-and-newer-T-series/t540p-high-cpu-usage-by-shtctky-exe-ThinkP...
Thanks ChrisL_US! I do have kaspersky anti-virus 2015 installed. -
100% CPU usage after games are run
Hi All
Having a Strange problem with iTunes. All works fine unless I play a Steam based game e.g. Counterstrike:source. If I try and launch iTunes after closing a steam game sometimes (but not always) itunes.exe will launch, there is some HD activity, nothing else happens. If I check taskmanager itunes.exe is using 100% of the CPU.
I have tried quitting and closing all possible tasks but iTunes will always launch in the same manner. A log out will not fix it, the only way to get iTunes to work again it restarting the machine.
I have had this problem since the first windows release of itunes. Is it an issue within steam? Is anyone else getting this happen?
Thanks
DanTell the scanning software not to scan the entire iTunes folder. iTunes makes temp XML files every time you play a song. It does this to keep track of times & last date played.
http://discussions.apple.com/thread.jspa?threadID=165247&tstart=0
Or open up a ticket with the antivirus vendor. -
100% CPU usage after starting/joining a call
This problem has been persisting for a few months now, and I haven't found a fix. Sometimes when I would start or join a call, the first thread of my i7 would shoot up to 100% usage (Monitored with MSI Afterburner). I originally thought it was because I had an older version of Skype, but I updated to the latest version and still had the issue. To get the usage to go down, I either have to restart the laptop or put it into sleep mode. When I checked the task manager, Skype was only using 0%-2% of my CPU, but System and System Interrupts run at higher usage (6%-7% each). I am running Windows 8.1 on a laptop with the desktop version of Skype. Please note that this also does not happen every time, just on some occasions.
EDIT: It eventually happens, but not always right away.Yes, you can use NI-DAQmx with Visual C++ and with Mesurement Studio 7 or later you also have Microsoft Visual C++ class libraries for NI-DAQmx.
If you are now developing a application I would advice to move to DAQmx since this the Traditional libraries are nolonger activly developed, we will only be adding new features and hardware to NI-DAQmx, thus for future support of the application it's better to use NI-DAQmx then Traditional NI-DAQ.
For more information on NI-DAQmx see:
http://zone.ni.com/devzone/conceptd.nsf/webmain/ee47b125bb9e053686256fbc0014c384?OpenDocument
Met vriendelijke groet / Kind regards,
Karsten
Applications Engineer
National Instruments
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