similar to: Ext4 improvements

I've been playing with ocfs2 in local mode, and was really suprised how fast it was. I was playing with extracting a linux distribution on my hardrive that was tar gzipped (GZIP=-1) and extracting it onto a different hard drive. This was with kernel 2.6.28. ocfs2-5m6s reiser4-4m19s reiser3-6m38 jfs-8m18s ext2-4m7s ext3-7m18s xfs-6m29s ext4m55s I noticed the delete times were very slow with

Hello. Please see http://unix.stackexchange.com/a/66702. I would like to have confirmation whether or not rsync verifies the transferred files' integrity at the target location by checksumming as advertised in the manpage: """Note that rsync always verifies that each transferred file was correctly reconstructed on the receiving side by checking a whole-file checksum that is

On Sep 20, 11:50 am, wbrana@gmail.com wrote: > On Sun, Sep 20, 2009 at 3:47 AM, Daniel J Blueman > > <daniel.blueman@gmail.com> wrote: > > On Sep 19, 7:20 pm, wbr...@gmail.com wrote: > > >> RAID details: > >> > >> md8 : active raid10 sda7[0] sdd7[3] sdc7[2] sdb7[1] > >> 62925824 blocks 256K chunks 2 far-copies [4/4] [UUUU] >

> You are missing the point of the checksum. It is a verification that > the file was assembled on the target system correctly. The only > post-transfer checksum that would make any sense locally would be to > make sure that the disk stored the file correctly which would require > a flushing of the cache and a re-reading of the file. Rsync has no > capability to do this

Hello, I''m quite interested in ZFS, like everybody else I suppose, and am about to install FBSD with ZFS. On that note, i have a different first question to start with. I personally am a Linux fanboy, and would love to see/use ZFS on linux. I assume that I can use those ZFS disks later with any os that can work/recognizes ZFS correct? e.g. I can install/setup ZFS in FBSD, and later use

Looks like maildir can't be used very realiably without quite a lot of locking. Writing and scanning the directory would have to be locked, but reading wouldn't (as long as the file hasn't been renamed which would require scanning to find it). So much for "no locks needed".. The problem is that opendir()/readdir() may temporarily not return some files if there has been

Dear R People: I have the following in a file: resp factA factB 39.5 low B- 38.6 high B- 27.2 low B+ 24.6 high B+ 43.1 low B- 39.5 high B- 23.2 low B+ 24.2 high B+ 45.2 low B- 33.0 high B- 24.8 low B+ 22.2 high B+ and I construct the data frame: > collard.df <- read.table("collard.txt",header=TRUE) > collard.aov <- aov(resp~factA*factB,data=collard.df) >

All, I have just returned to R after a decade of absence, and it is good to see that R has become such a great success! I'm trying to bring Design of Experiments into some aspects of software performance evaluation, and to teach myself that, I picked up "Experiments: Planning, Analysis and Optimization" by Wu and Hamada. I try to reproduce an analysis in the book using lm, but

Hi. I recently mentioned in several posts, that I'd tended to use mbox rather than maildir, because you don't loose so much space (due to always allocating full blocks per maildir file and thus per mail). I made some tests of my archive, which consists of some 3,4 million mails at a total of 42GB). Most of these mails are probably normal sized, but there are also some with bigger

On Sun, 4 Aug 2019, Jonathan Billings wrote: > Are you sure you don?t have other processes or users running on the system? It only happens when you have a network connection? It might also be swapping heavily, check to see how much RAM you have. Check the output of ?free?. Pretty sure. I rebooted this morning. top - 17:32:20 up 15:47, 6 users, load average: 1.12, 2.55, 1.56 Tasks: 238

Gday, This is a repost since I only had one direct reply and I remain mystified- This may be stupidity on my part but it may not be so simple. In brief, my problem is I'm not sure how to extract parameter values/effect sizes from a nonlinear regression model with a significant interaction term. My data sets are dose response curves (force and dose) for muscle that also have two

According to the documentation for as.vector, it removes all attributes from its argument ("the attributes of x are removed"). This does not seem to be the case for a list with a dim attribute. Consider the following code: numarray <- vector("numeric",4) dim(numarray) <- c(2,2) dimnames(numarray) <- list(c("A","B"),c("C","D"))

Dear list! > gregexpr("a+(b+)", "abcdaabbc") [[1]] [1] 1 5 attr(,"match.length") [1] 2 4 What I want is the offsets of the matches for the group (b+), i.e. 2 and 7, not the offsets of the complete matches. Is there a way in R to get that? I know about gsubgn and strapply, but they only give me the strings matched by groups not their offsets. I could write

R-experts, I have a bunch of files (by date) that I can read into dataframes as below. df$today: identifier rtgmdy rtgmdy_dt rtgmdy_watch rtgmdy_nowatch rtgmdy_watch_dt rtgsp rtgsp_dt 310000031 Aa3 20050701 Aa3 NA AA- 20050510 310000086 B1 20070920 B1 NA B+ 20070828 310000106 Baa2 20040326 Baa2 NA BBB 20051003 310000170 Baa3 20070601 Baa3 NA BBB+ 20051024 310000225 Ba2 20070601 Ba2 NA

Hi, can anyone tell me how to nest two fixed factors using glmer in lme4? I have a split-plot design with two fixed factors - A (whole plot factor) and B (subplot factor), both with two levels. I want to do GLMM as I also want to include different plots as a random factor. But I am interested on the effect of A a B and their interaction on the response variable. I tried

I have grades data. I read them from a csv in letter-grade format. I then converted them to levels levels(grades$grade)=c('A+','A','A-','B+','B','B-','C+','C','C-','D+','D','D-') And then to numbers grades$gp=grades$grade levels(grades$gp)=c(4.3,4.0,3.7, 3.3,3.0,2.7, 2.3,2.0,1.7, 1.3,1.0,0.7)

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 You are missing the point of the checksum. It is a verification that the file was assembled on the target system correctly. The only post-transfer checksum that would make any sense locally would be to make sure that the disk stored the file correctly which would require a flushing of the cache and a re-reading of the file. Rsync has no capability

On Fri, Dec 5, 2014 at 4:30 AM, <devzero at web.de> wrote: > After being written to disk, for both local and remote transfers, the > destination file as a whole is not being re-read for checksumming. > Checksumming is only being done for the reconstruction process: > The checksum is calculated across the bits being received and the > bits being read from the target file, so

Hi, Anybody knows when the new kernel package will be ready? regards,

Hi, I noticed that `df -i` on btrfs returns zero values, much like it does for vfat and - I think I remember - reiser3. It would be nice if btrfs could count the number of inodes on a volume, to get an overview of just how much dust I am collecting. Is it doable? Filesystem Inodes IUsed IFree IUse% Mounted on /dev/loop0 0 0 0 - /lo/kernel2 Jan