450 reputation
420
bio website blog.piechotka.com.pl
location Bay Area, California
age 26
visits member for 5 years
seen Mar 25 at 19:31

Mar
11
comment How to debug when a router refuses to route for one specific device?
@user3767013 IIRC I could but I will check next time.
Mar
11
asked How to debug when a router refuses to route for one specific device?
Feb
6
awarded  Popular Question
Dec
28
comment run a computer without RAM?
In addition to what @reirab said it's possible to run a 'PC' without DRAM in a sense of executing instructions - this is mode in which system operates before the DRAM controller is initialized (it's done by BIOS/EFI/Coreboot etc.). However it's unlikely that you'll be able to do anything useful as most components probably use DMA anyway.
Dec
15
awarded  Popular Question
Nov
14
awarded  Popular Question
Oct
15
awarded  Popular Question
Jul
8
comment Swap partition size on a 64 GB RAM computer for memory-intensive work
@JasonC - other option is just put it in LVM and don't bother with such details as 'where to put partition to resize it later'.
Jul
6
comment Winbind group lookup painfully slow
@Marty What distro are you using? Also they are in /usr/lib/sudo not /usr/libexec/sudo, at least on Gentoo.
Jul
2
awarded  Curious
Jun
4
answered Winbind group lookup painfully slow
May
24
awarded  Popular Question
Feb
20
comment Paranoid Parent: “WiFi safe for baby?”
@Virtlink - microwave have emitter of range 800-1000 W. Typical leakage from microwave is 1W. WiFi have 100 mW output. It's more like standing next to a candlelight then being in oven.
Feb
12
comment Why do Jumbo Frames hurt latency?
AD PMTUD: I thought that it's combination of DF + Fragmentation Needed (or Packet Too Big in IPv6) - TCP/IP stack being concerned with throughput tries to discover the MTU (if there is more then one hop as you wrote) but UDP/IP would either use right size of have longer time with 'classical' frames if the FN/PTB would be passed to application. Is it correct description of PMTUD (sorry - I haven't touch it for a while and some details might got blurry).
Feb
12
accepted Why do Jumbo Frames hurt latency?
Feb
11
comment Why do Jumbo Frames hurt latency?
It does not quite answer (or at least I don't see it). For TCP it will hurt the latency of connection initiation (Path MTU discovery) but it should not hurt the UDP as there is no Path MTU dicovery there - packet might be either dropped or not. Also it should not hurt the latency after the Path MTU was discovered as at this point no datagram which would exceed MTU would be sent.
Feb
11
asked Why do Jumbo Frames hurt latency?
Feb
7
accepted How to unmount (safely remove) USB disk/pendrive from Windows 8 after opening file in Metro Application
Nov
26
comment What stops an internet router from sniffing my traffic?
@FrankThomas - this is true only if SMTP does not use TLS (by STARTTLS etc.). I thought most servers does not accept unencrypted SMTP from clients (however - I would not my first disappointment in people's approach to security).
Nov
9
awarded  Popular Question