Regarding IO to disk

Hi Folks,Can anyone please let me know the average/typical time taken for completing one IO operation (read and write) to disk? More specifically, time taken for writing a string to a file. Thanks a load, Jawahar ___ freebsd-hackers@freebsd.org mailing

Re: Regarding IO to disk

Jawahar Tadipatri wrote: Hi Folks,Can anyone please let me know the average/typical time taken for completing one IO operation (read and write) to disk? More specifically, time taken for writing a string to a file. Your question is incomplete and cannot be answered correctly. Declared average

Re: Regarding IO to disk

Thanks for the info Ivan. On Wed, Jul 8, 2009 at 5:05 PM, Ivan Voras ivo...@freebsd.org wrote: Jawahar Tadipatri wrote: Hi Folks,Can anyone please let me know the average/typical time taken for completing one IO operation (read and write) to disk? More specifically, time taken for writing a

Re: Regarding IO to disk

Declared average latency for desktop hard drives (see http://www.seagate.com/docs/pdf/datasheet/disc/ds_barracuda_7200_12.pdf) is latency is average time to wait until data will be below head. it's by average half on single rotation. for 7200 rpm drive it's 120rps so half rotation takes

What's changed between 7.1 and 7.2

i'm getting that crap every time i remount filesystem and on startup. GEOM_LABEL: Label ufsid/48dd2cbe8423dd9e removed. GEOM_LABEL: Label for provider mirror/sysa is ufsid/48dd2cbe8423dd9e. GEOM_LABEL: Label ufsid/48dd2cbe8423dd9e removed. GEOM_LABEL: Label for provider mirror/sysa is

Re: Regression in atkbd?

On Thu, Jul 9, 2009 at 12:11 AM, Kevin Foochfl...@gmail.com wrote: Hi list, Did anyone experience issue with atkbd on 8.0? I encountered issue with keyboard and touchpad on HP presario V3400 when trying to upgrade from 7.2-RELEASE to 8.0 prior to and on BETA1.The keyboard and touchpad are

Re: What's changed between 7.1 and 7.2

2009/7/8 Wojciech Puchar woj...@wojtek.tensor.gdynia.pl: i'm getting that crap every time i remount filesystem and on startup. GEOM_LABEL: Label ufsid/48dd2cbe8423dd9e removed. GEOM_LABEL: Label for provider mirror/sysa is ufsid/48dd2cbe8423dd9e. GEOM_LABEL: Label ufsid/48dd2cbe8423dd9e

Regression in atkbd?

Hi list, Did anyone experience issue with atkbd on 8.0? I encountered issue with keyboard and touchpad on HP presario V3400 when trying to upgrade from 7.2-RELEASE to 8.0 prior to and on BETA1.The keyboard and touchpad are working fine on 7.2. On 8.0 prior to BETA1, I managed to obtain dmesg via

Re: What's changed between 7.1 and 7.2

On Wed, 8 Jul 2009, Wojciech Puchar wrote: i'm getting that crap every time i remount filesystem and on startup. GEOM_LABEL: Label ufsid/48dd2cbe8423dd9e removed. GEOM_LABEL: Label for provider mirror/sysa is ufsid/48dd2cbe8423dd9e. GEOM_LABEL: Label ufsid/48dd2cbe8423dd9e removed. GEOM_LABEL:

Re: What's changed between 7.1 and 7.2

On 2009-07-08 19:28, Robert Watson wrote: This is effectively debugging output that slipped into the release and shouldn't have. I believe it's now removed in 8.x, I'm not sure it's been MFC'd to 7.x yet. It was indeed removed, with r193131. The diff here:

Re: mmap/munmap with zero length

so. doesn't that mean that actually freebsd's mmap implementation needs to be changed in order to return an error if one tries to allocate space with len=0? alex Bob Bishop schrieb am 2009-07-06: Hi, On 6 Jul 2009, at 13:14, Dag-Erling Smørgrav wrote: Allocating or mapping a zero-length

Re: c question: *printf'ing arrays

thx for all the great help guys. cheers, alex Carlos A. M. dos Santos schrieb am 2009-07-02: 2009/7/2 Dag-Erling Smørgrav d...@des.no: Alexander Best alexbes...@math.uni-muenster.de writes:     for (i=0; i sizeof(hdr-nintendo_logo); i++)         fprintf(stderr, %x, hdr-nintendo_logo[i]);