The buffer tag has no wiki summary.
0
votes
1answer
118 views
Socket buffer and purpose of SO_RCVBUF [closed]
I'm trying to figure out what the SO_RCVBUF actually does.
Referring to the Linux kernel, it seems that the value specified with this option is just assigned to a variable (sk_buff.rcvbuf), which ...
1
vote
1answer
55 views
Daemontools multilog loses log line time information. How to fix it?
I am using daemontools to monitor a process and its output log. I am using multilog to write the logs to disk.
The run script for the log is:
#!/bin/bash
PATH=/usr/local/bin:/usr/bin:/bin
cd ...
4
votes
2answers
150 views
Does sysctl kern.bufcachepercent not work in OpenBSD 5.2 above 1.7GB?
I run OpenBSD/amd64 5.2 on a system with 12GB of RAM, and I want to use about 6GB to 8GB for filesystem caching.
By default, 5.2 amd64 comes with sysctl kern.bufcachepercent set to 20 (20%); I've ...
4
votes
1answer
287 views
Ksh loses data after piping 16K bytes
I recently found that ksh may lose some data after printing more than 16K bytes to the stdout if it is blocked for a couple of seconds.
This test.sh script prints out 257*64 (16448) bytes:
...
1
vote
0answers
41 views
xdelta3 fails to decode on block device
I'm trying to use xdelta3 to bring a remote block device into sync with a local one. I'm able to easily generate a xdelta3 patch file using the command:
xdelta3 -e -B 33554432 -v -9 -I 0 -s ...
4
votes
1answer
136 views
Switching between split buffers in vim
recently starting trying to use VIM as my full-time text editor since I spent a lot of time SSH'ed anyways. Recently installed NERDTree so I can quickly swap between files in a project.
Easy question ...
3
votes
2answers
352 views
linux stdbuf - line-buffered stdin option does not exist
The man page for the stdbuf command states that line-buffered mode is invalid as a standard input buffering option.
What is the reason for this?
tail -f access.log | stdbuf -iL cut -d' ' -f1 | uniq
...
3
votes
2answers
2k views
Alternate FIFO device for Linux with a (way) bigger buffer while still having filesystem semantics?
I am developing something that consists of a program I made generating output, and a program I did not make (and would very much like not to have to alter it) consuming it. I am using a named FIFO ...
9
votes
4answers
416 views
Is there a way to sync only one partition?
Is there a way to sync only one partition instead of all partitions?
Something like "sync /dev/sdc1".
1
vote
5answers
599 views
Display output to console while grep is used
In vim I use the following command to compile a tex file:
pdflatex\ \-file\-line\-error\ \-shell\-escape\ \-interaction=nonstopmode\ $*\\\|\ grep\ \-P\ ':\\d{1,5}:\ '
this works in terms of getting ...
5
votes
3answers
220 views
Utility to buffer an unbounded amount of data in a pipeline?
Is there a utility that I can stick in a pipeline to decouple read and write speeds?
$ producer | buf | consumer
Basically, I want a utility buf that reads its input as fast as possible, storing it ...
3
votes
1answer
380 views
Prevent unwanted buffers from opening
I'm using emacs for my daily javascript editing, to switch between buffers I use C-x LEFT and C-x RIGHT and I'm fine with this (even if I find it difficult to know the path of the file I'm modifying).
...
7
votes
1answer
2k views
Buffer size for capturing packets in kernel space?
Going through the man page of tcpdump, it seems kernel can drop the packets if the buffer is full. I was wondering if:
that size is configurable and/or
where can I see the size for my distro?
From ...
20
votes
3answers
13k views
How big is the pipe buffer?
As a comment in I'm confused as to why "| true" in a makefile has the same effect as "|| true" user cjm wrote:
Another reason to avoid | true is that if the command ...
12
votes
1answer
597 views
Is there truth to the philosophy that you should sync; sync; sync; sync?
When I was first introduced to Linux, working at Cisco Systems in 2000, I was taught the merits of the sync command, used to flush buffers to disk to prevent filesystem corruption / data loss. I was ...
3
votes
1answer
262 views
Ex and Vi: buffers and regexes
I want to put regex matches to buffer but cannot get even simpler example y :.put myNewBuffer return msg [line] [put] [buffer] working ie how to put something to buffer?
So to regular expressions ...
7
votes
1answer
497 views
How to change the name of a vim buffer
Is it possible to change the name of a buffer in vim?
Specifically, I'm using Conque Shell to open shells in vim (each shell is in a buffer) and with multiple shells, I see:
10: bash - 1
11: bash - ...
