High CPU usage with DSC
Since last week that I run an apt-get upgrade on my machine,bI observe a very high and periodically CPU usage for perl process
21392 112 39 19 10332 7552 3592 R 53.0 1.5 0:01.63 perl
426 root 20 0 5088 2476 2256 S 0.0 0.5 0:00.33 `- cron
24709 root 20 0 6484 2560 2200 S 0.0 0.5 0:00.03 `- cron
24713 112 20 0 1900 1100 1024 S 0.0 0.2 0:00.01 `- sh
24714 112 20 0 4604 2640 2476 S 0.0 0.5 0:00.02 `- copy-local-and-
24719 112 20 0 1900 1204 1128 S 0.0 0.2 0:00.01 `- refile-and-grok
24725 112 20 0 3536 1516 1436 S 0.0 0.3 0:00.00 `- xargs
24726 112 20 0 1900 1076 1004 S 0.0 0.2 0:00.01 `- refile-and-grok
24728 112 39 19 18592 15008 4996 R 91.2 3.0 0:06.70 `- perl
The process ID changes every time the perl process comes up.
UPDATE
root@raspberrypi:/var/ftp# ps -ef | grep perl
112 25971 25969 91 13:42 ? 00:00:20 perl /usr/share/dsc-statistics-presenter/dsc-xml-extractor
root 25981 22322 0 13:42 pts/0 00:00:00 grep perl
That process always run since I have my server up and running. It seems that got that high CPU usage since I updgrade perl, per-base and perl modules from 5.20.2-3+deb8u5 to 5.20.2-3+deb8u6. I'm trying to rollback but I m not able to do it
root@raspberrypi:/var/ftp# apt-get install perl=5.20.2-3+deb8u5
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Version '5.20.2-3+deb8u5' for 'perl' was not found
root@raspberrypi:/var/ftp#
Anyone can help me to identify the reason of such high cpu usage or roll-back the upgrade done?
process cpu top
edited Feb 12 at 17:48
Evan Carroll
5,759114482
asked Aug 2 '16 at 13:12
FederiFederi
45821231
|
show 1 more comment
Since last week that I run an apt-get upgrade on my machine,bI observe a very high and periodically CPU usage for perl process
21392 112 39 19 10332 7552 3592 R 53.0 1.5 0:01.63 perl
426 root 20 0 5088 2476 2256 S 0.0 0.5 0:00.33 `- cron
24709 root 20 0 6484 2560 2200 S 0.0 0.5 0:00.03 `- cron
24713 112 20 0 1900 1100 1024 S 0.0 0.2 0:00.01 `- sh
24714 112 20 0 4604 2640 2476 S 0.0 0.5 0:00.02 `- copy-local-and-
24719 112 20 0 1900 1204 1128 S 0.0 0.2 0:00.01 `- refile-and-grok
24725 112 20 0 3536 1516 1436 S 0.0 0.3 0:00.00 `- xargs
24726 112 20 0 1900 1076 1004 S 0.0 0.2 0:00.01 `- refile-and-grok
24728 112 39 19 18592 15008 4996 R 91.2 3.0 0:06.70 `- perl
The process ID changes every time the perl process comes up.
UPDATE
root@raspberrypi:/var/ftp# ps -ef | grep perl
112 25971 25969 91 13:42 ? 00:00:20 perl /usr/share/dsc-statistics-presenter/dsc-xml-extractor
root 25981 22322 0 13:42 pts/0 00:00:00 grep perl
That process always run since I have my server up and running. It seems that got that high CPU usage since I updgrade perl, per-base and perl modules from 5.20.2-3+deb8u5 to 5.20.2-3+deb8u6. I'm trying to rollback but I m not able to do it
root@raspberrypi:/var/ftp# apt-get install perl=5.20.2-3+deb8u5
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Version '5.20.2-3+deb8u5' for 'perl' was not found
root@raspberrypi:/var/ftp#
Anyone can help me to identify the reason of such high cpu usage or roll-back the upgrade done?
process cpu top
edited Feb 12 at 17:48
Evan Carroll
5,759114482
asked Aug 2 '16 at 13:12
FederiFederi
45821231
3
Runtopcommand and press V. It will enlist commands with their parents in tree format. It will be easy then to find out which process calling theperl
– SHW
Aug 2 '16 at 13:19
Added In the description
– Federi
Aug 2 '16 at 13:33
ps -ef | grep perl?
– 123
Aug 2 '16 at 13:36
Bingo ! For quick result, do runkill -9 426and see for a while the cpu load
– SHW
Aug 2 '16 at 13:42
1
Is a cron JOB that always run. I don't want kill it I want understand why it is taking more CPU compared to before
– Federi
Aug 2 '16 at 13:47
|
show 1 more comment
Since last week that I run an apt-get upgrade on my machine,bI observe a very high and periodically CPU usage for perl process
21392 112 39 19 10332 7552 3592 R 53.0 1.5 0:01.63 perl
426 root 20 0 5088 2476 2256 S 0.0 0.5 0:00.33 `- cron
24709 root 20 0 6484 2560 2200 S 0.0 0.5 0:00.03 `- cron
24713 112 20 0 1900 1100 1024 S 0.0 0.2 0:00.01 `- sh
24714 112 20 0 4604 2640 2476 S 0.0 0.5 0:00.02 `- copy-local-and-
24719 112 20 0 1900 1204 1128 S 0.0 0.2 0:00.01 `- refile-and-grok
24725 112 20 0 3536 1516 1436 S 0.0 0.3 0:00.00 `- xargs
24726 112 20 0 1900 1076 1004 S 0.0 0.2 0:00.01 `- refile-and-grok
24728 112 39 19 18592 15008 4996 R 91.2 3.0 0:06.70 `- perl
The process ID changes every time the perl process comes up.
UPDATE
root@raspberrypi:/var/ftp# ps -ef | grep perl
112 25971 25969 91 13:42 ? 00:00:20 perl /usr/share/dsc-statistics-presenter/dsc-xml-extractor
root 25981 22322 0 13:42 pts/0 00:00:00 grep perl
That process always run since I have my server up and running. It seems that got that high CPU usage since I updgrade perl, per-base and perl modules from 5.20.2-3+deb8u5 to 5.20.2-3+deb8u6. I'm trying to rollback but I m not able to do it
root@raspberrypi:/var/ftp# apt-get install perl=5.20.2-3+deb8u5
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Version '5.20.2-3+deb8u5' for 'perl' was not found
root@raspberrypi:/var/ftp#
Anyone can help me to identify the reason of such high cpu usage or roll-back the upgrade done?
process cpu top
edited Feb 12 at 17:48
Evan Carroll
5,759114482
asked Aug 2 '16 at 13:12
FederiFederi
45821231
Since last week that I run an apt-get upgrade on my machine,bI observe a very high and periodically CPU usage for perl process
21392 112 39 19 10332 7552 3592 R 53.0 1.5 0:01.63 perl
426 root 20 0 5088 2476 2256 S 0.0 0.5 0:00.33 `- cron
24709 root 20 0 6484 2560 2200 S 0.0 0.5 0:00.03 `- cron
24713 112 20 0 1900 1100 1024 S 0.0 0.2 0:00.01 `- sh
24714 112 20 0 4604 2640 2476 S 0.0 0.5 0:00.02 `- copy-local-and-
24719 112 20 0 1900 1204 1128 S 0.0 0.2 0:00.01 `- refile-and-grok
24725 112 20 0 3536 1516 1436 S 0.0 0.3 0:00.00 `- xargs
24726 112 20 0 1900 1076 1004 S 0.0 0.2 0:00.01 `- refile-and-grok
24728 112 39 19 18592 15008 4996 R 91.2 3.0 0:06.70 `- perl
The process ID changes every time the perl process comes up.
UPDATE
root@raspberrypi:/var/ftp# ps -ef | grep perl
112 25971 25969 91 13:42 ? 00:00:20 perl /usr/share/dsc-statistics-presenter/dsc-xml-extractor
root 25981 22322 0 13:42 pts/0 00:00:00 grep perl
That process always run since I have my server up and running. It seems that got that high CPU usage since I updgrade perl, per-base and perl modules from 5.20.2-3+deb8u5 to 5.20.2-3+deb8u6. I'm trying to rollback but I m not able to do it
root@raspberrypi:/var/ftp# apt-get install perl=5.20.2-3+deb8u5
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Version '5.20.2-3+deb8u5' for 'perl' was not found
root@raspberrypi:/var/ftp#
Anyone can help me to identify the reason of such high cpu usage or roll-back the upgrade done?
process cpu top
process cpu top
edited Feb 12 at 17:48
Evan Carroll
5,759114482
asked Aug 2 '16 at 13:12
FederiFederi
45821231
edited Feb 12 at 17:48
Evan Carroll
5,759114482
asked Aug 2 '16 at 13:12
FederiFederi
45821231
edited Feb 12 at 17:48
Evan Carroll
5,759114482
edited Feb 12 at 17:48
Evan Carroll
5,759114482
edited Feb 12 at 17:48
Evan Carroll
5,759114482
5,759114482
asked Aug 2 '16 at 13:12
FederiFederi
45821231
asked Aug 2 '16 at 13:12
FederiFederi
45821231
asked Aug 2 '16 at 13:12
FederiFederi
45821231
45821231
3
Runtopcommand and press V. It will enlist commands with their parents in tree format. It will be easy then to find out which process calling theperl
– SHW
Aug 2 '16 at 13:19
Added In the description
– Federi
Aug 2 '16 at 13:33
ps -ef | grep perl?
– 123
Aug 2 '16 at 13:36
Bingo ! For quick result, do runkill -9 426and see for a while the cpu load
– SHW
Aug 2 '16 at 13:42
1
Is a cron JOB that always run. I don't want kill it I want understand why it is taking more CPU compared to before
– Federi
Aug 2 '16 at 13:47
|
show 1 more comment
3
Runtopcommand and press V. It will enlist commands with their parents in tree format. It will be easy then to find out which process calling theperl
– SHW
Aug 2 '16 at 13:19
Added In the description
– Federi
Aug 2 '16 at 13:33
ps -ef | grep perl?
– 123
Aug 2 '16 at 13:36
Bingo ! For quick result, do runkill -9 426and see for a while the cpu load
– SHW
Aug 2 '16 at 13:42
1
Is a cron JOB that always run. I don't want kill it I want understand why it is taking more CPU compared to before
– Federi
Aug 2 '16 at 13:47
3
3
Run
top command and press V. It will enlist commands with their parents in tree format. It will be easy then to find out which process calling the perl– SHW
Aug 2 '16 at 13:19
Run
top command and press V. It will enlist commands with their parents in tree format. It will be easy then to find out which process calling the perl– SHW
Aug 2 '16 at 13:19
Added In the description
– Federi
Aug 2 '16 at 13:33
Added In the description
– Federi
Aug 2 '16 at 13:33
ps -ef | grep perl ?– 123
Aug 2 '16 at 13:36
ps -ef | grep perl ?– 123
Aug 2 '16 at 13:36
Bingo ! For quick result, do run
kill -9 426 and see for a while the cpu load– SHW
Aug 2 '16 at 13:42
Bingo ! For quick result, do run
kill -9 426 and see for a while the cpu load– SHW
Aug 2 '16 at 13:42
1
1
Is a cron JOB that always run. I don't want kill it I want understand why it is taking more CPU compared to before
– Federi
Aug 2 '16 at 13:47
Is a cron JOB that always run. I don't want kill it I want understand why it is taking more CPU compared to before
– Federi
Aug 2 '16 at 13:47
|
show 1 more comment
1 Answer
1
active
oldest
votes
DSC: A DNS Statistics Collector
The program is written in perl, but this isn't a Perl problem. You're using DSC. In order to solve this we would have to know what version of DSC you're using. My suggestion is to upgrade to a newer version of DSC.
- https://www.dns-oarc.net/dsc/download
You may be experiencing the bug fixed on 2015-10-09
A user reported that when a TCP segment containing only the DNS message
length is received after the message it references (i.e., out-of-order),
then DSC goes into a 100% CPU loop. Confirmed that the code doesn't work
correctly when dnslen comes out-of-order, but I wasn't able to easily
reproduce the 100% CPU bug.
answered Feb 12 at 17:48
Evan CarrollEvan Carroll
5,759114482
add a comment |
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DSC: A DNS Statistics Collector
The program is written in perl, but this isn't a Perl problem. You're using DSC. In order to solve this we would have to know what version of DSC you're using. My suggestion is to upgrade to a newer version of DSC.
- https://www.dns-oarc.net/dsc/download
You may be experiencing the bug fixed on 2015-10-09
A user reported that when a TCP segment containing only the DNS message
length is received after the message it references (i.e., out-of-order),
then DSC goes into a 100% CPU loop. Confirmed that the code doesn't work
correctly when dnslen comes out-of-order, but I wasn't able to easily
reproduce the 100% CPU bug.
answered Feb 12 at 17:48
Evan CarrollEvan Carroll
5,759114482
add a comment |
DSC: A DNS Statistics Collector
The program is written in perl, but this isn't a Perl problem. You're using DSC. In order to solve this we would have to know what version of DSC you're using. My suggestion is to upgrade to a newer version of DSC.
- https://www.dns-oarc.net/dsc/download
You may be experiencing the bug fixed on 2015-10-09
A user reported that when a TCP segment containing only the DNS message
length is received after the message it references (i.e., out-of-order),
then DSC goes into a 100% CPU loop. Confirmed that the code doesn't work
correctly when dnslen comes out-of-order, but I wasn't able to easily
reproduce the 100% CPU bug.
answered Feb 12 at 17:48
Evan CarrollEvan Carroll
5,759114482
add a comment |
DSC: A DNS Statistics Collector
The program is written in perl, but this isn't a Perl problem. You're using DSC. In order to solve this we would have to know what version of DSC you're using. My suggestion is to upgrade to a newer version of DSC.
- https://www.dns-oarc.net/dsc/download
You may be experiencing the bug fixed on 2015-10-09
A user reported that when a TCP segment containing only the DNS message
length is received after the message it references (i.e., out-of-order),
then DSC goes into a 100% CPU loop. Confirmed that the code doesn't work
correctly when dnslen comes out-of-order, but I wasn't able to easily
reproduce the 100% CPU bug.
answered Feb 12 at 17:48
Evan CarrollEvan Carroll
5,759114482
DSC: A DNS Statistics Collector
The program is written in perl, but this isn't a Perl problem. You're using DSC. In order to solve this we would have to know what version of DSC you're using. My suggestion is to upgrade to a newer version of DSC.
- https://www.dns-oarc.net/dsc/download
You may be experiencing the bug fixed on 2015-10-09
A user reported that when a TCP segment containing only the DNS message
length is received after the message it references (i.e., out-of-order),
then DSC goes into a 100% CPU loop. Confirmed that the code doesn't work
correctly when dnslen comes out-of-order, but I wasn't able to easily
reproduce the 100% CPU bug.
answered Feb 12 at 17:48
Evan CarrollEvan Carroll
5,759114482
answered Feb 12 at 17:48
Evan CarrollEvan Carroll
5,759114482
answered Feb 12 at 17:48
Evan CarrollEvan Carroll
5,759114482
answered Feb 12 at 17:48
Evan CarrollEvan Carroll
5,759114482
5,759114482
add a comment |
add a comment |
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3
Run
topcommand and press V. It will enlist commands with their parents in tree format. It will be easy then to find out which process calling theperl– SHW
Aug 2 '16 at 13:19
Added In the description
– Federi
Aug 2 '16 at 13:33
ps -ef | grep perl?– 123
Aug 2 '16 at 13:36
Bingo ! For quick result, do run
kill -9 426and see for a while the cpu load– SHW
Aug 2 '16 at 13:42
1
Is a cron JOB that always run. I don't want kill it I want understand why it is taking more CPU compared to before
– Federi
Aug 2 '16 at 13:47