Questions tagged [strace]
86 questions
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monitor processes in citrix
Where I work, We've been having trouble with certain applications mysteriously crashing/hanging in citrix; the primary culprits are IE8 and a certain .net-based industry specific app that we use.
I've yet to actually catch either/any of these…
la11111
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secure rollback of updates
I'm again and again wondering why there isn't (or did I just not find it?) any tool which can reliably and effortlessly rollback changes done by updates.
Let me take an update with apt on Debian as example. There's this new package and there are the…
didi_X8
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2 answers
Using strace effectively
Right now I'm dealing with a client's php based site that is somehow clogging up all of the available processes he has with his shared hosting provider. I'd like to prove to him exactly what and how many processes are being ran at a time when a…
b1kjsh
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3 answers
Remi Repo Mysql Server Not Starting
Executing the command to start the mysql service fails to start the mysql server.
[root@localhost]# service mysqld restart
Stopping mysqld: [ OK ]
MySQL Daemon failed to start.
Starting mysqld: …
coolestdude1
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How to get PIDs waiting on a semaphore
If I strace a stuck process and see output of the form:
[gaius@redhat64 bin]$ strace -p 18185
Process 18185 attached - interrupt to quit
[ Process PID=18185 runs in 32 bit mode. ]
semop(458760, 0xffa00af0, 1
How would I find out the PID that last…
Gaius
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Why server response time is more than a minute for a website, it happens for one website and other website loads fine?
I have multiple websites hosted on this server and one website "server response time" is very very high (more than a minute).
below are the findings... and i am unable to understand whats going wrong, and unable to understand the strace command…
Rajsekar Reddy
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1 answer
memcached causes Apache processes to hang indefinitely
I have been tracking down the source of Apache processes hanging indefinitely. Unfortunately, I need to regularly reboot Apache as it eventually exhausts all slots. The Apache status page below shows processes hung in the W - Sending Reply state -…
tom_nb_ny
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Dump client ssh key from server side
To investigate on some issue, I need to dump the full ssh key offered by the ssh client to the ssh server.
Up to this point, I tried to
put the parent of all sshd server (belongs to root) LogLevel to DEBUG
strace -f (to follow child processes) the…
kalou.net
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WSL PING "system error"
I have a weird PING error in WSL2, Ubuntu 20.04 distribution.
When I'm doing nslookup - all ok:
root@i:~# nslookup google.com
Server: 172.19.224.1
Address: 172.19.224.1#53
Non-authoritative answer:
Name: google.com
Address:…
M.Ch.
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Dovecot cannot read TLS certificate
On my CentOS 7 system I am trying to run dovecot with TLS required.
For that, I created my private key and certificate in
[root@homeserver /]# ls -lZ indernet/cert/homeserver.*
-r--r--r--. root certuser system_u:object_r:default_t:s0 …
Hiran Chaudhuri
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How to configure nginx better to reduce redundant system calls when APIs are called?
I have a Laravel application running in production, and there are a few APIs that used a lot. Something was creating a bottleneck and it used to stall our servers (3 with Load Balancer). After optimising the basics in Laravel, caching config,…
Rohan
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