similar to: Looking for common dtrace scripts for NFS top talkers

Displaying 20 results from an estimated 2000 matches similar to: "Looking for common dtrace scripts for NFS top talkers"

2007 Aug 03
1
Nested Resources vs. Normal Resources
Hi, I''m a bit unsure as to when one uses a nested resource and when one uses a normal resource. If you have a belongs_to, has_one/many relationship between models is that automatically an indication of a nested resource or can these resources still be represented in the normal resource way? I have a resource (talker) that belongs_to a number of other models (network, data_date,
2004 Apr 24
3
Re: Hardware for handling large call volume
[moved to asterisk-users, as this is not a development question] At 1:40 PM -0400 on 4/24/04, Sudhir Kumar wrote: >I would like to hear from any of you who has done any kind of >benchmarking on a robust hardware that can handle large call volume, >preferably with G.729 codec involved. > >We are in the process of putting together a system that should have a >quad E1 card, G.729
2008 Mar 14
8
xcalls - mpstat vs dtrace
HI, T5220, S10U4 + patches mdb -k > ::memstat While above is working (takes some time, ideally ::memstat -n 4 to use 4 threads could be useful) mpstat 1 shows: CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 48 0 0 1922112 9 0 0 8 0 0 0 15254 6 94 0 0 So about 2mln xcalls per second. Let''s check with dtrace:
2006 Nov 29
7
how to debug context switching and mutex contentions?
I''m looking for a suggestion on a good way to hunt down the source of high context switching and mutex contentions... Is dtrace the way to go now, or should I stick with something like lockstat? Russ This is a 5 second interval for mpstat: CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 16 0 0 1115 1241 206 9095 912 2420 7393 0 12105 68 25
2008 Jan 17
1
Under DTrace USDT and PID, kernel''s microstat accounting doesn''t work in this situation, doesn''t it?
Does anyone has any ideas about this problem? 2008/1/15, ?? TaoJie <eulertao at gmail.com>: > > Hi all: > > I''m working on revealing system performance now. > My testing program is an infinite loop. Inside the loop, it will do some > mathematical opertaions and call function callee(), then go to the next > loop. > I install a alarm(30) in the program. It
2011 Apr 25
3
arcstat updates
Hi ZFSers, I''ve been working on merging the Joyent arcstat enhancements with some of my own and am now to the point where it is time to broaden the requirements gathering. The result is to be merged into the illumos tree. arcstat is a perl script to show the value of ARC kstats as they change over time. This is similar to the ideas behind mpstat, iostat, vmstat, and friends. The current
2007 Oct 17
3
Dtrace scripts for performance data gathering
I am looking for Dtrace scripts that can be used to collect data during performance tests. I am especially interested in IO but CPU, memory, threads, etc are needed as well. Thanks, Dave
2009 Jun 21
1
Meetme Talker Optimization
Hello, all. I've been playing with MeetMe and talker optimization seemed like a great idea. I activated it as follows: exten => 201,1,MeetMe(100201,cTo) However, although I can see who is the talker on the CLI pbx01*CLI> meetme list 100201 User #: 01 1001 Denise Dion-Sullivan Channel: SIP/1001-1e1db7c8 (not talking) 00:00:33 User #: 02 1000 John A. Sullivan III
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
2010 May 24
1
Accessing functions from a package
Hi All, I created a .R file with source code that accesses functions from a R package (example, fTrading). I then run the created application in two different configurations: 1. I started a R session, and then ran the application using the source ("my_application.R") command, and I measured the time the application ran. 2. I started 2 R sessions in the same processor, and executed
2010 May 24
1
Accessing functions from a package
Hi Folks, I created a .R file with source code that accesses functions from a R package (example, fTrading). I then run the created application in two different configurations: 1. I started a R session, and then ran the application using the source ("my_application.R") command, and I measured the time the application ran. 2. I started 2 R sessions in the same processor, and executed
2003 Apr 30
1
textConnection taking a long time to open a big string
I was using 'textConnection' to read in a file with about 11,000 lines so I could detect lines with incomplete data and delete them and then read them in with 'scan'. I am using 1.7.0 on Windows. Here is the output from the script and it was using 51 seconds just to do the textConnection. Is there a limit on how large a text object can be to be used with
2009 Mar 28
4
mac_srs_rx_poll_ring thread never stop polling hardware in kernel
Recently I found that the mac_srs_rx_poll_ring thread may never stop in kernel, please see the following mpstat, cpu 2 is in 100% kernel usage, but no syscalls and no interrupts. CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 0 300 100 0 0 1 0 0 0 0 0 0 100 1 14 0 0 134 68 134 1
2009 Mar 31
9
Hwo to disable the polling function of mac_srs
In crossbow, each mac_srs has a kernel thread called "mac_rx_srs_poll_ring" to poll the hardware and crossbow will wakeup this thread to poll packets from the hardware automatically. Does crossbow provide any method to disable the polling mechanism, for example disabling the this kernel thread? Thanks Zhihui -------------- next part -------------- An HTML attachment was scrubbed... URL:
2009 Jul 09
3
performance troubleshooting
We have a serious performance problem on our server. Here is some data: <pre> > ::memstat Page Summary Pages MB %Tot ------------ ---------------- ---------------- ---- Kernel 1133252 4426 31% Anon 1956988 7644 53% Exec and libs 31104 121 1% Page cache
2006 Mar 30
4
samba 3 performance issues
I believe I have some hardware or configuration related performance issues running samba 3.0.14a-3sarge. Our server is an Intel Celeron 2 Ghz with 512 MB of RAM and a 3ware card using SATA disks in a RAID 5 configuration (3ware controller card). We have a gigabit network and are using Intel Gigabit ethernet cards e1000). When copying large files to the samba shares on the system, the
2005 Nov 18
6
expected system load from DTrace scripts/probes
Does anyone out there have any thoughts on the type of load common DTrace scripts would cause on a system if run 24x7? I know "common DTrace scripts" and their underlining probe calls a vague statement. So for the lack of a common and establish set of scripts in the OS, I''ll use the most popular right for my question...the DTraceToolkit from Brendan Gregg. Which by the
2011 Aug 23
0
AGC on a phone conversation
2011.08.23. 15:38 keltez?ssel, Yanick Bourbeau ?rta: > Since I don't have access to different channels as I record a phone call > using a man in the middle approach, there is something else I can use > to equalize the sound ? What I would do then probably is try to manually separate the two channels/talkers; say channel 1 goes from 0 seconds to 13 seconds, channel 2 goes from 13
2016 Mar 12
1
Soft lockups with Xen4CentOS 3.18.25-18.el6.x86_64
On 03/10/2016 12:05 AM, Sarah Newman wrote: > On 03/09/2016 08:15 PM, Sarah Newman wrote: >> I've been running 3.18.25-18.el6.x86_64 + our build of xen 4.4.3-9 on one host for the last couple of weeks and have gotten several soft lockups >> within the last 24 hours. I am posting here first in case anyone else has experienced the same issue. >> > > Here is mpstat
2011 Aug 19
2
AGC on a phone conversation
I have a recorded conversation from an analog trunk. As usual one side is stronger that the other one. In my case, the gap between signal levels are even bigger. How does speex AGC preprocessor will perform on this type of audio recording? Maybe I am wrong and AGC is not really what I need to equalize the two persons in my phone conversation? As I Understand, AGC will perform better if each