Great thanks for Lucas!
In our using scenarios, we need to get the string response from staf in most
cases. I want to reduce the time for the requests with response returned.
In my opinion, the execution time for “ls /” doesn’t take so much time, may be
most of the time is spent on the communication between staf client and staf
server. I guess the communication is based on TCP, right?
My confusion is that what makes the communication so slow? Any idea to refine
it?
发件人: Sharon Lucas [mailto:luc...@us.ibm.com]
发送时间: 2011年7月19日 23:27
收件人: 邓悟
抄送: staf-users@lists.sourceforge.net
主题: Re: [staf-users] speed issue of staf
That's because you are submitting a PROCESS START request using the WAIT
option so it has to wait for the process to complete. If you didn't specify
the WAIT option, you'd see that each PROCESS START request takes only 0.007
seconds. Or, if you specified a simpler request like a STAF PING request, it
only takes 0.0009 seconds.
Note: STAFLoop is an executable we provide that allows you to get some
performance information on submitting STAF service requests.
[root@staf1e ~]# STAFLoop 10 local PROCESS START SHELL COMMAND "ls /"
RETURNSTDOUT STDERRTOSTDOUT WAIT
Total loops: 10
Total time : 9.723
Avg. time : 0.972 <== With the WAIT option, each PROCESS START
request takes almost 1 second on my Linux machine.
Loops/sec : 1.02849
[root@staf1e ~]# STAFLoop 10 local PROCESS START SHELL COMMAND "ls /" RETURNSTD
OUT STDERRTOSTDOUT
Total loops: 10
Total time : 0.075
Avg. time : 0.007 <== Without the WAIT option, each PROCESS START
request only takes 0.007 seconds per PROCESS START request
Loops/sec : 133.333
[root@staf1e ~]# STAFLoop 10 local PING PING
Total loops: 10
Total time : 0.009
Avg. time : 0.000 <== A simple STAF PING request only takes 0.0009
seconds (so that 1,111 STAF PING requests can be submitted in 10 seconds)
Loops/sec : 1111.11
[root@staf1e ~]# STAFLoop 10 local PING PING
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
From: 邓悟 <den...@taobao.com>
To: "staf-users@lists.sourceforge.net" <staf-users@lists.sourceforge.net>
Date: 07/18/2011 09:45 PM
Subject: [staf-users] speed issue of staf
________________________________
Sorry to interrupt you.
I’m using staf in linux x86_64 platform. A simple request takes about 1 second
each time. That’s too long to serve a local request. Any one has idea?
Command is:
staf local PROCESS START SHELL COMMAND ls / WAIT RETURNSTDOUT STDERRTOSTDOUT
Response
--------
{
Return Code: 0
Key : <None>
Files : [
{
Return Code: 0
Data : bin
boot
cache
dev
etc
home
lib
lib64
lost+found
media
misc
mnt
opt
proc
root
sbin
selinux
srv
sys
tmp
usr
var
}
]
}
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