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| author | William Cohen <wcohen@redhat.com> | 2008-12-10 14:49:46 -0500 |
|---|---|---|
| committer | William Cohen <wcohen@redhat.com> | 2008-12-10 14:49:46 -0500 |
| commit | 1c0f18a9730f1fa5990c79debfc1960b08c8b7cf (patch) | |
| tree | 8edd722db8a39e4964f3ad2101355732c8e62896 /doc/SystemTap_Beginners_Guide/en-US | |
| parent | e557e9564abe26495b516332fec90016bc4760ac (diff) | |
| download | systemtap-steved-1c0f18a9730f1fa5990c79debfc1960b08c8b7cf.tar.gz systemtap-steved-1c0f18a9730f1fa5990c79debfc1960b08c8b7cf.tar.xz systemtap-steved-1c0f18a9730f1fa5990c79debfc1960b08c8b7cf.zip | |
Edit useful script examples. Clean up formating para-call-graph-simple.stp
Diffstat (limited to 'doc/SystemTap_Beginners_Guide/en-US')
3 files changed, 33 insertions, 31 deletions
diff --git a/doc/SystemTap_Beginners_Guide/en-US/Useful_Scripts-iotime.xml b/doc/SystemTap_Beginners_Guide/en-US/Useful_Scripts-iotime.xml index 21b6db9d..7a1633aa 100644 --- a/doc/SystemTap_Beginners_Guide/en-US/Useful_Scripts-iotime.xml +++ b/doc/SystemTap_Beginners_Guide/en-US/Useful_Scripts-iotime.xml @@ -68,13 +68,12 @@ <title><xref linkend="iotime"/> Sample Output</title> <screen> [...] -3123380 2460 (pcscd) access /dev/bus/usb/005/001 read: 0 write: 0
-825946 3364 (NetworkManager) access /sys/class/net/eth0/carrier read: 8190 write: 0
-825955 3364 (NetworkManager) iotime /sys/class/net/eth0/carrier time: 9
-117061 2460 (pcscd) access /dev/bus/usb/003/001 read: 43 write: 0
-117065 2460 (pcscd) iotime /dev/bus/usb/003/001 time: 7
-3973737 2886 (sendmail) access /proc/loadavg read: 4096 write: 0
-3973744 2886 (sendmail) iotime /proc/loadavg time: 11
+825946 3364 (NetworkManager) access /sys/class/net/eth0/carrier read: 8190 write: 0 +825955 3364 (NetworkManager) iotime /sys/class/net/eth0/carrier time: 9 +117061 2460 (pcscd) access /dev/bus/usb/003/001 read: 43 write: 0 +117065 2460 (pcscd) iotime /dev/bus/usb/003/001 time: 7 +3973737 2886 (sendmail) access /proc/loadavg read: 4096 write: 0 +3973744 2886 (sendmail) iotime /proc/loadavg time: 11 [...] </screen> </example> @@ -137,4 +136,4 @@ print("\n") } --> -</section>
\ No newline at end of file +</section> diff --git a/doc/SystemTap_Beginners_Guide/en-US/Useful_Scripts-nettop.xml b/doc/SystemTap_Beginners_Guide/en-US/Useful_Scripts-nettop.xml index c51d4b66..2d7e3595 100644 --- a/doc/SystemTap_Beginners_Guide/en-US/Useful_Scripts-nettop.xml +++ b/doc/SystemTap_Beginners_Guide/en-US/Useful_Scripts-nettop.xml @@ -63,20 +63,23 @@ <primary>if/else conditionals, alternative syntax</primary> <secondary>examples of SystemTap scripts</secondary> </indexterm> -<para>Note that <command>function print_activity()</command> uses the following constructs:</para> +<para>Note that <command>function print_activity()</command> uses the following +expressions:</para> <screen> -n_xmit ? @sum(ifxmit[pid, dev, exec, uid])/1024 : 0, +n_xmit ? @sum(ifxmit[pid, dev, exec, uid])/1024 : 0 n_recv ? @sum(ifrecv[pid, dev, exec, uid])/1024 : 0 </screen> -<para>These constructs are if/else conditionals. The first statement is simply a more concise way of writing:</para> +<para>These expressions are if/else conditionals. +The first statement is simply a more concise way of writing the following +psuedo code:</para> <screen> if n_recv != 0 then - @sum(ifrecv[pid, dev, exec, uid])/1024 + @sum(ifrecv[pid, dev, exec, uid])/1024 else - 0 + 0 </screen> <para><xref linkend="nettop"/> tracks which processes are generating network traffic on the system, and provides the following information about each process:</para> diff --git a/doc/SystemTap_Beginners_Guide/en-US/extras/para-callgraph-simple.stp b/doc/SystemTap_Beginners_Guide/en-US/extras/para-callgraph-simple.stp index 17cf50a5..1a3e2e03 100755 --- a/doc/SystemTap_Beginners_Guide/en-US/extras/para-callgraph-simple.stp +++ b/doc/SystemTap_Beginners_Guide/en-US/extras/para-callgraph-simple.stp @@ -1,39 +1,39 @@ function trace(entry_p) {
- if(tid() in trace)
- printf("%s%s%s\n",thread_indent(entry_p),
- (entry_p>0?"->":"<-"),
- probefunc())
+ if(tid() in trace)
+ printf("%s%s%s\n",thread_indent(entry_p),
+ (entry_p>0?"->":"<-"),
+ probefunc())
}
global trace
probe kernel.function(@1).call {
- if (execname() == "stapio") next # skip our own helper process
- trace[tid()] = 1
- trace(1)
+ if (execname() == "stapio") next # skip our own helper process
+ trace[tid()] = 1
+ trace(1)
}
probe kernel.function(@1).return {
- trace(-1)
- delete trace[tid()]
+ trace(-1)
+ delete trace[tid()]
}
probe kernel.function(@2).call { trace(1) }
probe kernel.function(@2).return { trace(-1) }
function trace(entry_p) {
- if(tid() in trace)
- printf("%s%s%s\n",thread_indent(entry_p),
- (entry_p>0?"->":"<-"),
- probefunc())
+ if(tid() in trace)
+ printf("%s%s%s\n",thread_indent(entry_p),
+ (entry_p>0?"->":"<-"),
+ probefunc())
}
global trace
probe kernel.function(@1).call {
- if (execname() == "stapio") next # skip our own helper process
- trace[tid()] = 1
- trace(1)
+ if (execname() == "stapio") next # skip our own helper process
+ trace[tid()] = 1
+ trace(1)
}
probe kernel.function(@1).return {
- trace(-1)
- delete trace[tid()]
+ trace(-1)
+ delete trace[tid()]
}
probe kernel.function(@2).call { trace(1) }
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