Klaus Schmidinger wrote: > Gerald Raaf wrote: > >> Am Sonntag, 4. Dezember 2005 10:37 schrieb Klaus Schmidinger: >> >>> Johannes Stezenbach wrote: >>> >>>> On Sat, Dec 03, 2005, Klaus Schmidinger wrote: >>>> >>>>> (AFAIK with NPTL all threads >>>>> of a given program have the same pid, so you won't be able to >>>>> distinguish them in 'top'). >>>> >>>> >>>> This is not entirely true, you can still see and distinguish >>>> the threads in htop or "ps -T u -C vdr" etc. (top does not work). >>>> >>>> The patch below might help, gettid() returns the PID of the thread. >>>> (And >>>> since it's a syscall it is independent of NPTL vs. linuxthreads. Tested >>>> on 2.6 only, but the gettid man page says it's available in 2.4.20. >>>> gettid() is Linux specific.) >>> >>> >>> Does this "gettid" call return a different tid than "pthread_self()"? >>> >> >> >> pthread_self() sample output log >> [2005/12/04 11:14:02] vdr vdr[27644]: tuner on device 3 thread started >> (pid=27644, tid=-1265644624) >> sample output ps -T u -C vdr >> root@vdr:~# ps -T u -C vdr >> USER PID SPID %CPU %MEM VSZ RSS TTY STAT START TIME >> COMMAND >> root 27644 27644 3.2 2.5 129332 26624 ? Sl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 27644 27742 0.0 2.5 129332 26624 ? Sl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 27644 27743 0.0 2.5 129332 26624 ? RNl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 27644 27745 0.0 2.5 129332 26624 ? Sl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 27644 27746 0.0 2.5 129332 26624 ? SNl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 27644 27748 0.0 2.5 129332 26624 ? Sl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 27644 27749 0.0 2.5 129332 26624 ? SNl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 27644 27750 0.0 2.5 129332 26624 ? Sl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 27644 27751 0.0 2.5 129332 26624 ? Sl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 27644 27752 0.0 2.5 129332 26624 ? Sl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 27644 27753 0.0 2.5 129332 26624 ? Sl 11:14 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> >> >> gettid() sample output log with Patch from Johannes Stetzenbach >> [2005/12/04 11:16:15] vdr vdr[29989]: tuner on device 3 thread started >> (pid=29989, tid=30086) >> sample output ps -T u -C vdr >> root@vdr:~# ps -T u -C vdr >> USER PID SPID %CPU %MEM VSZ RSS TTY STAT START TIME >> COMMAND >> root 29989 29989 0.1 2.5 129380 26640 ? Sl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 29989 30080 0.0 2.5 129380 26640 ? Sl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 29989 30081 0.0 2.5 129380 26640 ? SNl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 29989 30083 0.0 2.5 129380 26640 ? Sl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 29989 30084 0.0 2.5 129380 26640 ? SNl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 29989 30086 0.0 2.5 129380 26640 ? Sl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 29989 30087 0.0 2.5 129380 26640 ? SNl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 29989 30088 0.0 2.5 129380 26640 ? Sl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 29989 30089 0.0 2.5 129380 26640 ? Sl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 29989 30090 0.0 2.5 129380 26640 ? Sl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> root 29989 30091 0.0 2.5 129380 26640 ? Rl 11:16 0:00 >> ./vdr -w 60 -s /usr/local/bin/stopvdr -r /usr/local/bin/record.sh - >> >> my System is a NPTL only System (Linuxfromscatch System) with vdr-1.3.37. > > > Well, this shows me that on such a system all VDR threads have the same > PID, > but different SPIDs. I don't think that this has in any way changed through > Johannes' patch. > > What would be interesting would be the log excerpts corresponding to these > test runs, where the VDR threads log their 'pid' and 'tid' values. > Maybe you could post these, too? Aaaahhhrrrgghhhh - right after sending this message I saw that you had actually posted these. They must have slipped by my eyes, sorry. Klaus
