Displaying 20 results from an estimated 3000 matches similar to: "DTrace probes for R"
2004 Jan 06
1
Grouping data.frames
Hello all,
I'm new to R (and the S language in general) so go easy on me if this is really simple.
Given a data.frame df which looks like this:
f1 f2 f3 f4 c1 c2
1 y y a b 10 20
2 n y b a 20 20
3 n n b b 8 10
4 y n a a 30 5
I'd like to aggregate it by the factors f1 and f2 (or f2 and f3, or any other combination of the three) and compute the sum of c1 and c2 (as separate values). I
2010 Feb 19
1
Fix for incorrect use of restrict in xz third party code
Hello,
the included XZ Utils source code contains an incorrect use of the
restrict keyword. This leads to data corruption under certain
circumstances. For a short discussion of the problem see
http://sourceforge.net/projects/lzmautils/forums/forum/708858/topic/3306733
This was fixed in the XZ Utils git repository in commit
commit 49cfc8d392cf535f8dd10233225b1fc726fec9ef
Author: Lasse
2007 Apr 11
1
package incompatibility under 2.5.0 (please respond directly, I am not on r-devel)
Dear all,
For my package "ref" I have implemented extensive regression testing. It now fails to compile since primitives "dim" and "dimnames" (and their assignment methods) no longer allow for additional arguments. I was using an additional argument "ref" with several methods. For "].refdata" it still works, with "dim.refdata" no longer.
2008 Sep 10
1
Proposal for DTrace probes for NFS v3 client
Hi,
This is a proposal for probes for NFS v3 client(see attachment). These
probes are under a new DTrace provider: nfsv3client. These new probes
support tracing NFS v3 client activities such as sending RPC requests to
NFS v3 server and receiving RPC replies from NFS v3 server. Formats and
arguments of these new probes are quite similar to existing NFS v3
probes on server side (provider: nfsv3).
2008 Sep 08
0
Memcached dtrace probes
I am currently working on adding DTrace probes we have for Memcached
1.2.5 to the new binary protocol in 1.3 branch. The problem I am
facing is that I should have had a new variable into the probe. When
we added the probes, all memcached keys would be zeroterminated ascii
strings, but in the binary protocol it may not be zero-terminated.
So what do I do?
According to
2009 Apr 29
0
COMSTAR iscsi DTrace Probes -
The earlier post with the Dtrace probes definition (sent on April 23) was only to solicit feedback from all prospective users of iSCSI DTrace probes. I will follow up shortly with an updated document requesting approval from the community.
thanks
Priya
-------- Original Message --------
Subject: Dtrace provider for the COMSTAR iscsi Target Port Provider -
Review Request
Date: Thu, 23 Apr
2007 Oct 29
2
autoconf test for building dtrace USDT probes?
X.Org has adopted GNU autoconf as its build configuration mechanism,
so when I integrated the dtrace probes, I checked to see if they
should be built using this test, checking for the existence of a
program named "dtrace" in the path:
dnl Check for dtrace program (needed to build Xserver dtrace probes)
AC_ARG_WITH(dtrace, AS_HELP_STRING([--with-dtrace=PATH],
[Enable dtrace
2009 Apr 29
2
DTrace provider proposal: fibre channel (fc) COMSTAR port provider probes
I have added a specification of probes for the fibre channel COMSTAR
port provider to the DTrace section of wikis.sun.com. The proposal may
be found here: http://wikis.sun.com/display/DTrace/fibre+channel+Provider
I welcome feedback regarding this proposal.
Thanks,
Sam
2006 Oct 31
0
6370454 dtrace should support USDT probes in static functions
Author: ahl
Repository: /hg/zfs-crypto/gate
Revision: b1ab97f77b0ad2a4fe2a43d9c5aac7259840bb90
Log message:
6370454 dtrace should support USDT probes in static functions
Files:
update: usr/src/lib/libdtrace/common/dt_dof.c
update: usr/src/lib/libdtrace/common/dt_link.c
update: usr/src/lib/libdtrace/common/dt_provider.c
update: usr/src/lib/libdtrace/common/dt_provider.h
2005 Sep 28
4
A document about implementing dtrace probes in SAX
Hi,
I have mentioned before that we have added some sdt dtrace probes in SAX,
our APL interpreter. Encouraged by Angelo and Jignesh, I have created a
small document (5 pages) describing our experience with it, together with
some problems we have encountered and some scripts we use for
pretty-printing dtrace outputs.
The said document can be found at
2009 Apr 30
0
DTrace provider proposal: COMSTAR iSCSI target port provider probes
I would like to request approval of the the DTrace proposal for the COMSTAR
iSCSI target port provider. I have updated the specification of the
iscsi provider at http://wikis.sun.com/display/DTrace/iscsi+Provider. Your
feedback is appreciated.
thanks
Priya
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2011 Jan 24
1
Possible bug in R parser
Dear R developers,
A recent typo led me to discover, that R is happy to accept
> 20x2
[1] 20
as input. This appears to be related to the parsing of hexadecimal
constants, since there must be a zero before the 'x' (i.e. 2x2 or
02x02 gives the expected error). All this is under R 2.12.1 on both OS
X and Linux. Is this expected behavior?
Cheers,
Olaf Mersmann
2008 Nov 07
6
Dtrace command
Hi All,
Can I get Dtrace command, which is useful for regular system administration like performance issue.
Advance Thanks
Muthu
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This message posted from opensolaris.org
2010 Aug 30
1
Surprising behavior of Negate()
Dear R-developers,
I find the current behavior of Negate() somewhat confusing. It does not
match the passed function 'f' until the returned function is called for
the first time. To see an example of what this can do see the following
(contrived) example:
f <- function(x) is.integer(x)
not_f <- Negate(f)
f <- function(x) is.character(x)
## Both should, in my mind,
2007 Nov 27
5
Dtrace probes for voluntary and involuntary context switches
Hi,
I am profiling some workloads for the voluntary and involuntary context switches. I am interested in finding out the reasons causing these two types of context switches. As far as I understand, involuntary context switch happens on expiration of time slice or when a higher priority process comes in. While the voluntary switch generally happens when a process is waiting for I/O etc.
So to
2005 Jul 08
3
pairs() uses col argument for axes coloring
Hi list,
not sure if this is the wanted behavior, but running the following code:
> version
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
major 2
minor 1.1
year 2005
month 06
day 20
language R
> n <- 500
> d <- 4
> m <- matrix(runif(n*d, -1, 1), ncol=d)
> c <- hsv(apply(m, 1, function(x) {sum(x*x)/d}),
2005 Jul 08
3
pairs() uses col argument for axes coloring
Hi list,
not sure if this is the wanted behavior, but running the following code:
> version
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
major 2
minor 1.1
year 2005
month 06
day 20
language R
> n <- 500
> d <- 4
> m <- matrix(runif(n*d, -1, 1), ncol=d)
> c <- hsv(apply(m, 1, function(x) {sum(x*x)/d}),
2002 May 29
2
Tcl/tk , question about the environment of the call
This is my simple code, my intention is to let the inner function browse the
objects in the outer function.
#######################
tk1 <- function() {
tk2 <- function() {
inner <- 3
list2 <- ls()
#list objects in fuction tk2
print("**** inner objects ****")
print(list2)
#list objects in fuction tk1
list_parent <- ls(parent.frame())
2008 Jul 20
2
How to inform all the daemons I have modified the smb.conf file
Hello, everyone
I edit the lp_load() of the samba source that this fuction may modify the smb.conf sometimes. How can I let all the samba daemons know that?
Restarting samba service may cause all link break up.
Thanks!
From miguelmedalha at sapo.pt Sun Jul 20 06:29:09 2008
From: miguelmedalha at sapo.pt (Miguel Medalha)
Date: Sun Jul 20 06:29:42 2008
Subject: [Samba] How to
2011 Jul 14
4
puppet custom fuction run as user pupprt?
I wrote a custom fuction to read a root read-only file, it raised an
Permission Denied error.
During debug, i found this fuction seems to run as user puppet, it is this
a feature or a bug?
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System Administrator, Focus on System Management and Basic Development
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