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Questions tagged [zombie]

35 questions
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3 answers

What happens when pid_max is reached

As the title suggests, what happens when pid_max (32bit standard is 32768) is reached with many zombie-processes? On our server a user generates a lot of suphp defunct zombie processes and this forces our server to restart... and I think this…
John Brunner
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Do Zombie Process have adverse effects?

Yes, I have gone through a lot of answers, but they don't really specifically say if Zombie Processes will have any adverse effects in the longer run or not. I have an application that creates a child on new connection and the child performs certain…
Dushyant Bangal
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Zombie process blocking port when restarting Hadoop (Secondary) Namenode

I'm having weird issues with the Hadoop Namenode and Secondary Namenode. Our HDFS cluster runs smoothly most of the time. But every now and then, either the Primary Namenode freezes (crashing the whole cluster) or the Secondary Namenode freezes and…
Janek Bevendorff
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Hundreds of zombie sh processes spawn then die

I have a few Ubuntu Server 14.04.03 LTS boxes that will occasionally spawn hundreds of zombie sh processes. This process spike will be picked up by the monitoring system, and send an alert. I found out that the process spike was sh zombie procs by…
Dan
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strange strace output of httpd process of apache running django with mod_wsgi

I have about 12 httpd processes running for an RHEL aws box that no one is hitting in the browser (shared team dev box). These processes together are consuming over 1.8 GB on the dev box, and I have seen it up to 6 GB on production. Each one of…
Sam Hammamy
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Solaris 10 init failing to reap zombie processes

ps currently shows 17617 zombie processes, all of which have a ppid of 1/init. init should be reaping these defunct processes, but isn't for some reason. The number of defunct processes is growing. Trying to force them to be reaped using preap…
wfaulk
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Graphite Running using daemon tools getting defunct

I am running carbon-cache.py and carbon-aggregator.py using daemon tools. When I made some changes in the storage-schema.conf and tried to restart the carbon-cache.py, I found that it is becoming zombie very frequently. root 3367 3366 0 03:23…
pradeepchhetri
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How can I keep my server from being clobbered by zombies from this Ubuntu cron job to remove PHP sessions?

I recently noticed when I logged in that I had several thousand processes marked "zombie". Upon further investigation, I found the following from ps fax: 701 ? Ss 0:28 cron 3363 ? S 0:00 \_ CRON 3364 ? Ss 0:00 …
josePhoenix
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What can I do when my webserver (Apache/2.2.3 on Centos 5.5) takes longer than 10 seconds to respond to a nagios web request on port 80

Hyperic says there is a zombie process around the same time. How can I figure out what process it is and go from there? It usually happens every day between Midnight and 1AM, but it has occured around 11am as well. Let me know if I can provide more…
alloutfallout
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A linux machine with lots of processes in uninterruptible sleep state

I have a linux machine that has lots of processes in uninterruptible sleep state. I'd like to know why this happens. Here's part of the information of running top -o S command: top - 14:44:51 up 298 days, 4:47, 1 user, load average: 84.54, 85.11,…
Brian
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WireGuard `wg-quick up` hangs on `ip link add $profile type wireguard`

I've been a happy WireGuard user for several years and never had any issues. Today, for seemingly no reason, I started having issues. I ran wg-quick up $profile as root and that terminal session locked up (ctrl+c/d etc don't kill it). The only…
Aaron Esau
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How to find zombies in network?

Last days I receive reports from my ISP that someone from my network scan ports and trying to connect to openssh services around internet. I assume that nobody does it on purpose, and that someone machine has been infected and does it without owner…
Bohdan
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init never reaping zombie/defunct processes

On my Fedora Core 9 webserver with kernel 2.6.18.8, init isn't reaping zombie processes. This would be bearable if it wasn't for the process table eventually reaching an upper limit where no new processes can be allocated. Sample output of ps -el |…
st9
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1 answer

List mapped zombie drives in powershell

I'm writing a little powershell script for some basic logs that have to be generated. Right now I'm stuck with logging mapped network drives: $colDrives = Get-WmiObject Win32_MappedLogicalDisk -ComputerName localhost foreach ($objDrive in…
Alessandro
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Suse 10: svnserve exit with signal 11 and hangs

We are using svn (1.6.3)+sasl integration. After installationon on Suse 10.x (64 bits) I found that svnserve hanged sessions ("ps ax" shows more and more hanged svnserve processes). Xinetd logs contains a lot of lines like this EXIT: svn signal=11…
FoxyBOA
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