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Questions tagged [limits]

82 questions
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Maximum Size Limit for CIFS Share Accessed by Windows Server 2003 (32 bit) Client?

We have a CIFS share being served out by a NETAPP appliance. The CIFS share has grown to over 2 TB in size. A Windows Server 2003 32 bit-client accesses the share. Lets say, for example, the CIFS share grew to 3 TB in size. Would the…
user104997
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Debian virt/res/shr and cpu time limiting

Servers have multiple users running multiple programs, some of which don't seem to behave and will eat up RAM like there is no tomorrow, for example: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 30091 xxxx 20 0 2194m 1.4g…
Joshua D'Alton
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Why does IIS seem to be limiting simultaneous connections?

One of the ASP.NET web apps that we have allows users to download relatively large files that can take a bit of time to fetch. For reasons I don't understand, it looks to me like any given client is being throttled to just one connection at a…
Benjamin Pollack
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Minimum permissions to count number of mmaps of another process?

For metrics collection, I'm trying to get the number of number of open mmaps of some process. To do this I can simply run cat /proc/${PID}/maps | wc -l If the process belongs to the current user this works fine, but for another user executing the…
Benno
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What are the differences between these ext4 features: dir_nlink vs large_dir

From the ext4(5) man page: dir_nlink Normally, ext4 allows an inode to have no more than 65,000 hard links. This applies to regular files as well as directories, which means that there can be no more than 64,998 sub‐directories in a directory…
Siu Ching Pong -Asuka Kenji-
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Ubuntu 21.10 ulimit (open file descriptors) not applying correctly

The situation is strange because I have 2 identical servers with the same application but on one server i get a ulimit error from the custom application ulimit error: too many open files but on the other it is working as expected. I really ensured…
Arturski
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Block users from accessing anything outside home folder and run any executables on Windows

I am facing a quite complex problem and I do not know how to approach it in the best way. In short I need to block access (browse, display, run etc.) to anything outside of the profile/home directory on Windows + block installation and execution of…
BrX
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Docker blocks when running multiple containers

I have no problem running 6000 docker containers. But when I start 6056, docker blocks and the server becomes unstable (sudo blocks for several minutes, but docker ps works). There is plenty of memory free: $ free -m total used …
Ole Tange
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Excluding specific processes from ulimit

I manage a shared CentOS 8.1 server. I don't want users running computationally intensive processes on this server because it is the login node to a computer cluster. So we use ulimit to kill processes using more than 20minutes of cpu…
irritable_phd_syndrome
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Is there anything similar to hashlimit for mac address?

The hashlimit module works basically like ‘limit’ but can be used with source IP, destination port, destination IP and source port, thanks to the –-hashlimit-mode option. Is there anything similar that allows to use the mac address as well…
Harry
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Policyd-rate-limit how to set limit outgoing mails for each individual sender domain

I am using policyd-rate-limit and it works only for global sending outgoing mails like that: limits: - [30, 600] Limit to 30 mails yb 10 minutes. And when I try to set limit for each user like that: limits_by_id: test@domain.loc: [1,…
Macsurf
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How to determine which resource is exhausted

On a server with a very high load many of my daily cron jobs stopped working. I have postfix server running that only delivers locally so that I can see the output of the cron jobs with mutt. I grepped for cron in the logs and I saw this: Feb 23…
Pablo
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Caddy "CSR doesn't contain a SAN short enough to fit in CN"

The Common Name (CN) in a TLS certificate is documented to have a limit of 64 chars. The trick when issuing a cert for a so long subdomain is to set the CN to something else (shorter) and have the certificate to certify multiple domains, as the…
Xavi Montero
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number of subdomain limit/alphabet issue on nginx

I have an issue adding new subdomains via nginx - specifically all subdomains crash/get blocked when a subdomain beginning with the letter 'a' is added to our system. This is a server hosted on AWS EC2. We have worked through a LOT of tech support…
RebRy
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How to reserve some disk space (e.g. for backup)

I have a VPS with Wordpress (including storage and database on the same machine). Now I want to make daily backups to an external service (AWS S3): the issue is that first I need to generate a tar of the storage and a dump of the database, and those…
collimarco
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