The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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performance – How can I produce high CPU load on Windows? – Super User

Posted by jpluimers on 2020/10/28

Reminder to self: [WayBack] performance – How can I produce high CPU load on Windows? – Super User

Poor-mans-solution is a batch file filling one core:

@echo off
:loop
goto loop

To stop, press Ctrl+C in the console.

Far easier is [WayBack] Tools To Simulate CPU / Memory / Disk Load – The Way I See It:

There is an old SysInternals tool from 1996 called “CPU Stress” that still works. (I just tried it on my Windows 10 laptop.)

Custom CPU load

It’s GUI based and allows you to run up to four threads at custom intensities. This allows you to tune the desired CPU load. As a rule of thumb: One thread with Activity set to Maximum will consume about 25% CPU. So as an example: If you run three threads at Maximum, your CPU load goes to about 75%.

Portable

CPUSTRES.EXE is a portable download and does not require installation.

–jeroen

Posted in Development, Software Development, Windows Development | Leave a Comment »

Optional sort by name in `LogMemoryManagerStateToFile` · Issue #64 · pleriche/FastMM4 · GitHub

Posted by jpluimers on 2020/10/27

If not done yet, try to improve this: [WayBack] Optional sort by name in LogMemoryManagerStateToFile · Issue #64 · pleriche/FastMM4 · GitHub

–jeroen

Posted in Delphi, Development, Software Development | Leave a Comment »

shell – How do I grep for multiple patterns with pattern having a pipe character? – Unix & Linux Stack Exchange

Posted by jpluimers on 2020/10/27

Since I keep forgetting this – especially because I cannot remember the “why”: [WayBack] shell – How do I grep for multiple patterns with pattern having a pipe character? – Unix & Linux Stack Exchange by “user unknown“.

The -E means using Regular expression: POSIX extended – Wikipedia.

egrep "foo|bar" *.txt

or

grep "foo\|bar" *.txt
grep -E "foo|bar" *.txt

selectively citing the man page of gnu-grep:

   -E, --extended-regexp
          Interpret PATTERN as an extended regular expression (ERE, see below).  (-E is specified by POSIX.)

Matching Control
   -e PATTERN, --regexp=PATTERN
          Use PATTERN as the pattern.  This can be used to specify multiple search patterns, or to protect  a  pattern
          beginning with a hyphen (-).  (-e is specified by POSIX.)

(…)

   grep understands two different versions of regular expression syntax: “basic” and “extended.”  In  GNU grep,  there
   is  no  difference  in  available  functionality  using  either  syntax.   In  other implementations, basic regular
   expressions are less powerful.  The following description applies to extended regular expressions; differences  for
   basic regular expressions are summarized afterwards.

In the beginning I didn’t read further, so I didn’t recognize the subtle differences:

Basic vs Extended Regular Expressions
   In basic regular expressions the meta-characters ?, +, {, |, (, and ) lose their special meaning; instead  use  the
   backslashed versions \?, \+, \{, \|, \(, and \).

I always used egrep and needlessly parens, because I learned from examples. Now I learned something new. :)

–jeroen

Posted in Development, RegEx, Software Development | Leave a Comment »

delphi – Can I use an Edit Mask to format output? (not just validate input) – Stack Overflow

Posted by jpluimers on 2020/10/27

From a while ago, and – being on the back-end side mostly – I sometimes forget: [WayBack] delphi – Can I use an Edit Mask to format output? (not just validate input) – Stack Overflow

You can use the TField.OnGetText event or TNumericField.DisplayFormat property to modify how the text is being displayed.

Since you have a TStringField holding numbers, you have two choices:

  • use a TNumericField and the DisplayFormat property
  • use the OnGetText event and do your own string formatting

Edit:

Sam used this approach:

I implemented OnSetText and OnGetText event handlers. I already had the Edit Mask 9999 9999 9999 9999;1;_ so the OnSetText was just

TStringField(Sender).Value := Trim(Text);

and OnGetText was just

sValue := TStringField(Sender).Value;  
Text := Format('%s %s %s %s', [Copy(sValue, 1, 4), Copy(sValue, 5, 4), Copy(sValue, 9, 4), Copy(sValue, 13, 4)]);

It works fine. Thanks.

–jeroen

Posted in Delphi, Development, Software Development | Leave a Comment »

Linux Find Out What Process Are Using Swap Space – nixCraft

Posted by jpluimers on 2020/10/26

Some interesting tips at [WayBack] Linux Find Out What Process Are Using Swap Space – nixCraft

  • pidof
  • pgrep
  • grep –color VmSwap /proc/####/status
  • awk the same information
  • doing the same in loops
  • smem
  • top

Via: [WayBack] Want to find out what process are using swap space? Useful to debug and optimize your app. … – nixCraft – Google+

–jeroen

Read the rest of this entry »

Posted in *nix, Linux, Power User | Leave a Comment »

[Random] How to quickly view a binary’s embedded manifest? – MITHUN SHANBHAG’s blog

Posted by jpluimers on 2020/10/26

[WayBack] [Random] How to quickly view a binary’s embedded manifest? – MITHUN SHANBHAG’s blog

Cool! sigcheck -m dumps a manifest if there is one:

C:\>\\live.sysinternals.com\tools\sigcheck.exe -m C:\Windows\notepad.exe

Background information: [WayBack] Sigcheck – Windows Sysinternals | Microsoft Docs: Dump file version information and verify that images on your system are digitally signed.

[WayBack] License to Kill: Malware Hunting with the Sysinternals Tools | TechEd North America 2013 | Channel 9 This session provides an overview of several Sysinternals tools, including Process Monitor, Process Explorer, and Autoruns, focusing on the features useful for malware analysis and removal. These util

–jeroen

Posted in LifeHacker, Power User, Windows, Windows 10 | Leave a Comment »

Prijsdalingen – Tweakers

Posted by jpluimers on 2020/10/26

For my link archive: [WayBack] Prijsdalingen – Tweakers

Via:

–jeroen

Posted in LifeHacker, Power User | Leave a Comment »

WordPress blog URLs using post-ID: Using Permalinks « WordPress Codex

Posted by jpluimers on 2020/10/23

[WayBack] Using Permalinks « WordPress Codex:

http://example.com/?p=N

So for instance https://wiert.me/?p=35558 points to Delphi version info table: C# Builder, Delphi 8 through 10.3 Rio and Appbuilder despite the actual URL not fully matching the title (because I do not like link rot): https://wiert.me/2016/09/06/delphi-version-info-table-need-help-with-these-projectversion-for-c-builder-delphi-2005-and-2006-dllsuffix-for-c-builder-appbuilder-1-13-codename/

–jeroen

Posted in link rot, Power User, SocialMedia, WordPress, WWW - the World Wide Web of information | Leave a Comment »

From the past: figuring out the damage last nights lightning strike at 1060NP caused yesterday evening

Posted by jpluimers on 2020/10/23

[WayBack] Jeroen Pluimers on Twitter: “Trying to figure out the damage last nights lightning strike at 1060NP caused yesterday evening….”

and [WayBack] Thread by @jpluimers: “Trying to figure out the damage last nights lightning strike at 1060NP caused yesterday evening. @LianderNL was very quick to respond and fi […]”

Thread by @jpluimers: “Trying to figure out the damage last nights lightning strike at 1060NP caused yesterday evening. @LianderNL was very qnd and fix L3 from our 3-phase connection: the main fuse before the meter tripped. Damage so far: 1 @amazonDE […]”

This was the first preventive measure fiber cable for galvanic isolation between the parts that can be powered by UPS and the parts that cannot be:

[WayBack] Jeroen Pluimers on Twitter: “New fiber provides galvanic isolation between the parts that are behind the master UPS and the ones I cannot get behind it. Should help contain damage during a future lightning strike.…”

–jeroen

Read the rest of this entry »

Posted in Liander, LifeHacker, Power User | Leave a Comment »

Thomann tas voor bekken

Posted by jpluimers on 2020/10/23

Great source for cymbal bags, back-packs and hard-cases: [WayBack Thomann tas voor bekken

More choice and better prices than [Archive.is] Suchergebnis auf Amazon.de für: becken rucksack: Musikinstrumente & DJ-Equipment.

–jeroen

Posted in LifeHacker, Power User | Leave a Comment »

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