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From: "steve.tsai at nexusguard dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug server/20557] New: It seems like that switching output file doesn't work.
Date: Tue, 06 Sep 2016 03:05:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D20557

            Bug ID: 20557
           Summary: It seems like that switching output file doesn't work.
           Product: systemtap
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: server
          Assignee: systemtap at sourceware dot org
          Reporter: steve.tsai at nexusguard dot com
  Target Milestone: ---

I tried the following command.

stap -F -o tcpdump.log -S 1,2 tcp_dumplike.stp

I got a several GB log file "tcpdump.log.0". It didn't output 2 1MB size fi=
le.
My tcp_dumplike.stp script:
-----------------------------------
#! /usr/bin/env stap
// A TCP dump like example
probe begin, timer.s(1)
{
 ansi_clear_screen ()

 printf("-----------------------------------------------------------------\=
n")
 printf(" Source IP Dest IP SPort DPort U A P R S F \n")
 printf("-----------------------------------------------------------------\=
n")
}

probe udp.recvmsg /* ,udp.sendmsg */
{
  printf(" %15s %15s %5d %5d UDP\n", saddr, daddr, sport, dport)
}

probe tcp.receive
{
  printf(" %15s %15s %5d %5d %d %d %d %d %d %d\n", saddr, daddr, sport, dpo=
rt,
urg, ack, psh, rst, syn, fin)
}
-----------------------------------------------

I don't want to run out of my disk.

thank you in advance.
Steve

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