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Well, thermals have been tight in this test, witness the fact that this laptop gets faster with the case not screwed tight. But the last runs are with case open and CPU temp < 65 C. I plan to repeat this line of testing with a desktop. Just...

The standard technique is called "tombstoning". When you free memory, you have some sort of meta-data which you can check for the memory's state. Ancient MacOS used to use this for its memory management strategy.

Some options: Walk /proc/<my-pid>/map to find your address (or not) Catch the SIGSEGV signal Fork and see whether the child segfaults

How to check if an address is available for access? Colleagues, I've been wanting to ask this question for many years. If I access an address that is not part of the allocated memory area, for example, if I go beyond the boundaries of the...

I apologize for the inaccurate representation. I have FreeBSD host. This host is internet server and it have two jails: (http|sql-server). The jails are connected to the network via vnet. If I run vbox on nat, all works (vbox, jails...

There is a kernel called MINIMAL. Copy it and add what additional features/devices you need.

The reason NFS doesn't provide the security we expect is that the NFS server only secures files owned by root by translating root (UID 0) to nobody (UID 65535) before transferring over the wire. The rest of NFS security is implemented in the...

pkg install security/py-certbot

It does its own line editing, i.e. developed the hard way.

Spent quite a bit of Greenbacks on Berkeley Forest project. Please come visit! BSD Library & Offices | on Spatial via GhostBSD - https://www.spatial.io/s/BSD-Library-and-Offices-66ff446bdf674998d396ffc3 - 269 views•7 loves - BSD Originators...

BSD Library & Offices | on Spatial via GhostBSD - https://www.spatial.io/s/BSD-Library-and-Offices-66ff446bdf674998d396ffc3 - 269 views•7 loves - BSD Originators Library & Offices. Spaces for meetings, classes, etc... - Visit BSD Library...

Article here. FreeBSD, The FreeBSD Foundation, and The FreeBSD Forums are not associated with the content of this article.

In a lab experiment, rats were offered two kinds of water. Pure water or water laced with Colombian marching powder. If you keep a rat in an empty cage with only food and these two kinds of water, they prefer the laced version. If you keep them...

Thanks for the quick reply. Apparently, tcsh doesn't use either readline or editline.

On an Apple TV?

Every time I try Kodi on a crippled computer (Amazon Fire, Apple TV, Chromestick) I get video and audio out of sync. Not inspiring confidence.

Sorry, no ZFS involved. The 48 GB configuration had hw.physmem=32 GB for `make world`.

Is /usr/obj on ZFS? If yes, even though it's using a single channel, it's not referencing the slower SSD accesses. More RAM is used for ARC. Compare your various configurations arcstats using systat -z.

Here are the timings and the bandwidth according to memtest. The bandwidth confirms that the 32 GB module does not do dual-channel RAM. Why the `make world` is faster on it is unexplained.

No. Readline is a GNU project. FreeBSD base should not contain any GPL-licensed code. If you want to know which libraries some native binary uses, try ldd. Here: $ ldd /bin/sh /bin/sh: libedit.so.8 => /lib/libedit.so.8 (0x3ec7916c1000)...

No. Readline is a GNU project. FreeBSD base should not contain any GPL-licensed code. If you want to know which libraries some native binary uses, try ldd. Here: $ ldd /bin/sh /bin/sh: libedit.so.8 => /lib/libedit.so.8 (0x3ec7916c1000)...

New run with different things in the DIMM slot. hw.physmem=32G step1a-dimm-none.log: 1:38:11 5891.61 real 87696.15 user 3794.37 sys 1552% CPU 164077/375876811 faults step2a-dimm-16gb2666.log: 1:41:54 6114.02 real 92023.45 user 3189.69 sys...

I am new to FreeBSD. I have it installed and working and am trying to adjust a few preferences. I have found that a few Control-key and Escape-key key sequences don't work as expected at the command prompt. I have read that some shells, such...

That one development VM you planned, run stable/14 on it. That will get you all the new bells and whistles that will be included in the next minor release. It also will provide the opportunity to play around and build from source. Leave the rest...

When a package tries to install, and there's already an executable in place, the original executable is saved with the *.pkgsave extension. Why would you want to remove pkg? In any case; pkg bootstrap -f would be the correct command. This...

Everything you don't statically put in the kernel config will be build as a module. As a matter of fact, even the things you did put in your custom config will be build as a module. So, unless you also exclude modules they're all going to be...

Completely untested by me, but I do suspect that if there are Asian characters in a pdf, that, if (as happened to a friend of mine with an Epson) sending the pdf to the printer with netcat doesn't result in a good document (my friend got pages...

I compile CUPS with all the knobs turned on... even for dependencies that offer any kind of support for PDFs. If a knob suggests PDF support, I turn it on, even if I don't know that I really need it. That way, I have options - if one method of...

ZFS has its own cache in addition to the filesystem buffer cache and de-duping that doesn't work for some operations such as writes through mmap(2). So if you have host and guest on ZFS you can end up with each cached filesystem location in RAM 4...

Only electronics people get a special kick out of these. Years ago, one of my co-worker EEs designed a board, put all the components on, but one of the tantalum capacitors in backwards. Powered it up and the capacitor popped its top with a...

New run with different things in the DIMM slot. hw.physmem=32G step1a-dimm-none.log: 1:38:11 5891.61 real 87696.15 user 3794.37 sys 1552% CPU 164077/375876811 faults step2a-dimm-16gb2666.log: 1:41:54 6114.02 real 92023.45 user 3189.69 sys...

and you definitely *need* to observe that stupidity in real life to actually believe how deep that rabbit hole goes. there's no amount of 'war stories' that could prepare a novice to what levels of idiocy you will see out in the field... The...

Hello. I'm just a regular computer user. I get on a computer to do stuff that I enjoy, I am not into technical things. But I had come to the conclusion that I would never be able to force myself to use Windows 11, try as I would to coax myself...

That might work, and not. The granularity of the SSD benchmark is likely a block (512 bytes), we are looking at L1/L2/L3 cache line sizes. The speed up of dual channel comes from reading at neighboring locations, so you read L3 block #n and get...

Yes. For me, the kit is tools; what I want to spend my time on is NOT maintaining those tools but, rather, using them to design other things. Like the guy who wants to DRIVE his antique car instead of spending his time polishing it! I run...

It looks like I don't need rules $cmd add 470 allow tcp from any to $wan_ip 9797 in via $wan $cmd add 480 allow tcp from $wan_ip 9797 to any out via $wan established $cmd add 481 allow tcp from any to $lan_ip 9797 in via $lan $cmd add 482 allow...

One thing comes to mind. The stream bench reads in sequence. Compiling is random access. Maybe you need to write your own memory test code that does a "random" memory walk, same seed for comparison. I trust you can type out such a little thing in...

I could use my SSD seek benchmark, just on an mmap()ed area instead of a file or raw device.

Here's a git repo (not mine) for a script that will generate an LS_COLORS variable with..... nearly everything in it. I used to maintain a sizable script of my own to do this, but that got tiresome and this one does it all. Some of your will...

One thing comes to mind. The stream bench reads in sequence. Compiling is random access. Maybe you need to write your own memory test code that does a "random" memory walk, same seed for comparison. I trust you can type out such a little thing in...

Seeing this discussion yesterday prompted me to finally get this little toy of mine posted: https://github.com/eborisch/colcolor

Other things that can be colourised: grep --color=auto sysutils/screen or sysutils/tmux (preferably) lots of colourful customisation available.

And just a reminder for people who find color distracting (or tacky), http://no-color.org/ Very helpful hints on how to fix misbehaving programs that are color by default and don't support NO_COLOR.

Here's a script that I used yesterday. zfs list -r -t snap -H -o name cwsys/VMs | grep baseline | xargs -n 1 zfs rollback

If you want to assign an interface, then in CBSD it looks like this: ifconfig igb0.160 create ifconfig igb0.160 up cbsd jcreate jname=test vnet=1 interface=igb0.160 allow_raw_sockets=1 ip4_addr=REALDHCP devfs_ruleset=5 or via CBSDfile...

Here's a script that I used yesterday. zfs list -r -t snap -H -o name cwsys/VMs | grep baseline | xargs -n 1 zfs rollback

Time to elaborate. High glycemic foods cause a serotonin spike. Many people who are depressed lack proper serotonin levels. So they self medicate by eating junk food. And, a lot of it. The downside is the insulin spike which drives that excess...

Hello. Before as I'm starting works I make snapshot zfs snapshot -r zroot@<date>. Then I change /etc/rc.conf and do rollbackl zfs rollback zroot@<date>. But file /etc/rc.conf it remains the same. What I did wrong?

Self medicating by macrodosing on high glycemic food will do it too. It'll take a while but will certainly do the job too. It's amazing how many people actually choose this option.

It's Stream, not Steam. https://www.cs.virginia.edu/stream/ I kind of trust it because it reacted to dual channel in the expected way. It doesn't seem to care too much about timings.