----- Original Message ----- From: "Ivan Voras" <ivoras@freebsd.org>>> The machine is running with ULE on 7.0 as mention using an Areca 1220 >> controller over 8 disks in RAID 6 + Hotspare. > > I'd suggest you first try to reproduce the stall without ULE, while > keeping all other parameters exactly the same.Ok tried with an updated 7 world / kernel as of this afternoon and with 4BSD instead of ULE and no difference the machine still locks up with no activity for anywhere from 20 to 30 seconds. Here's a snapshot from top under cpu and io modes when the stall has occured [top] last pid: 1102; load averages: 0.02, 0.08, 0.07 up 0+00:09:37 21:39:13 162 processes: 4 running, 145 sleeping, 13 waiting CPU states: 0.0% user, 0.0% nice, 0.4% system, 0.0% interrupt, 99.6% idle Mem: 60M Active, 19M Inact, 54M Wired, 56K Cache, 27M Buf, 3809M Free Swap: 4096M Total, 4096M Free PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 12 root 1 171 ki31 0K 16K RUN 0 8:59 97.90% idle: cpu0 11 root 1 171 ki31 0K 16K RUN 1 8:57 95.80% idle: cpu1 1102 root 1 -8 0 4752K 1256K physrd 1 0:01 19.64% newfs 4 root 1 -8 - 0K 16K - 0 0:00 0.10% g_down 1048 root 1 96 0 7656K 2544K CPU0 0 0:01 0.00% top 1054 root 1 96 0 7656K 2348K CPU1 1 0:01 0.00% top 863 root 1 96 0 131M 15768K select 0 0:00 0.00% httpd 1055 root 1 96 0 32928K 4656K select 0 0:00 0.00% sshd last pid: 1102; load averages: 0.02, 0.08, 0.07 up 0+00:09:37 21:39:13 162 processes: 4 running, 145 sleeping, 13 waiting CPU states: 0.0% user, 0.0% nice, 0.4% system, 0.0% interrupt, 99.6% idle Mem: 60M Active, 19M Inact, 54M Wired, 56K Cache, 27M Buf, 3809M Free Swap: 4096M Total, 4096M Free PID USERNAME VCSW IVCSW READ WRITE FAULT TOTAL PERCENT COMMAND 12 root 9 154 0 0 0 0 0.00% idle: cpu0 11 root 28 5 0 0 0 0 0.00% idle: cpu1 1102 root 5 0 0 0 0 0 0.00% newfs 4 root 14 0 0 0 0 0 0.00% g_down 1048 root 1 0 0 0 0 0 0.00% top 1054 root 1 0 0 0 0 0 0.00% top 863 root 1 0 0 0 0 0 0.00% httpd [/top] ===============================================This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.
In message <008201c86388$fd159010$b6db87d4@multiplay.co.uk>, "Steven Hartland" writes:> From: "Ivan Voras" <ivoras@freebsd.org> > >> The machine is running with ULE on 7.0 as mention using an Areca 1220 > >> controller over 8 disks in RAID 6 + Hotspare. > > > > I'd suggest you first try to reproduce the stall without ULE, while > > keeping all other parameters exactly the same. > > Ok tried with an updated 7 world / kernel as of this afternoon and with 4BSD > instead of ULE and no difference the machine still locks up with no activity > for anywhere from 20 to 30 seconds. > > Here's a snapshot from top under cpu and io modes when the stall has occured > [top] > last pid: 1102; load averages: 0.02, 0.08, 0.07 up 0+00:09:37 21:39:13 > 162 processes: 4 running, 145 sleeping, 13 waiting > CPU states: 0.0% user, 0.0% nice, 0.4% system, 0.0% interrupt, 99.6% idle > Mem: 60M Active, 19M Inact, 54M Wired, 56K Cache, 27M Buf, 3809M Free > Swap: 4096M Total, 4096M Free > > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND > 12 root 1 171 ki31 0K 16K RUN 0 8:59 97.90% idle: cpu0 > 11 root 1 171 ki31 0K 16K RUN 1 8:57 95.80% idle: cpu1 > 1102 root 1 -8 0 4752K 1256K physrd 1 0:01 19.64% newfs > 4 root 1 -8 - 0K 16K - 0 0:00 0.10% g_down > 1048 root 1 96 0 7656K 2544K CPU0 0 0:01 0.00% top > 1054 root 1 96 0 7656K 2348K CPU1 1 0:01 0.00% top > 863 root 1 96 0 131M 15768K select 0 0:00 0.00% httpd > 1055 root 1 96 0 32928K 4656K select 0 0:00 0.00% sshd > > > last pid: 1102; load averages: 0.02, 0.08, 0.07 up 0+00:09:37 21:39:13 > 162 processes: 4 running, 145 sleeping, 13 waiting > CPU states: 0.0% user, 0.0% nice, 0.4% system, 0.0% interrupt, 99.6% idle > Mem: 60M Active, 19M Inact, 54M Wired, 56K Cache, 27M Buf, 3809M Free > Swap: 4096M Total, 4096M Free > > PID USERNAME VCSW IVCSW READ WRITE FAULT TOTAL PERCENT COMMAND > 12 root 9 154 0 0 0 0 0.00% idle: cpu0 > 11 root 28 5 0 0 0 0 0.00% idle: cpu1 > 1102 root 5 0 0 0 0 0 0.00% newfs > 4 root 14 0 0 0 0 0 0.00% g_down > 1048 root 1 0 0 0 0 0 0.00% top > 1054 root 1 0 0 0 0 0 0.00% top > 863 root 1 0 0 0 0 0 0.00% httpd > [/top]What *exactly* do you mean by> machine still locks up with no activity for anywhere from 20 to 30 seconds.Is there disk activity? (e.g. activity light(s) flashing if you have them) Does top continue to update the screen during the 20-30 seconds? I'm thinking that newfs has queued up a bunch of disk i/o, and other disk i/o gets locked out, but activities that don't require any disk i/o (like top, once it is up and running) could continue. Is that what is happening?
The plot thickens.... This stall is not just related to newfs you have to
have gstat running as well. If I do the newfs without gstat running then
no stall occurs. As soon as Im running gstat while doing the newfs then
everything locks as described.
Running truss on gstat shows the issue / cause I believe but I dont
know what it means:-
[truss -o t.txt -p 61629 -d]
9.008933817 nanosleep({1.000000000}) = 0 (0x0)
9.008969017 gettimeofday({1201742426.147393},0x0) = 0 (0x0)
9.009009804 poll({0/POLLIN},1,0) = 0 (0x0)
9.009040534 gettimeofday({1201742426.147465},0x0) = 0 (0x0)
9.009076852 clock_gettime(0,{1201742426.147501706}) = 0 (0x0)
9.009294477 sigaction(SIGTSTP,{ SIG_IGN SA_RESTART ss_t },{ 0x800cb2470
SA_RESTART ss_t }) = 0 (0x0)
9.009335823 poll({0/POLLIN},1,0) = 0 (0x0)
9.009387785 poll({0/POLLIN},1,0) = 0 (0x0)
9.009457626 write(1,"\^[[4;11H 5\^[[6C2 32 467.8"...,213) = 213
(0xd5)
9.009488636 sigaction(SIGTSTP,{ 0x800cb2470 SA_RESTART ss_t },0x0) = 0 (0x0)
10.009930312 nanosleep({1.000000000}) = 0 (0x0)
10.009963836 gettimeofday({1201742427.148388},0x0) = 0 (0x0)
10.010005182 poll({0/POLLIN},1,0) = 0 (0x0)
10.010036192 gettimeofday({1201742427.148461},0x0) = 0 (0x0)
10.010073068 clock_gettime(0,{1201742427.148497922}) = 0 (0x0)
10.010292369
mmap(0x801000000,1048576,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) =
34376515584 (0x801000000)
10.010327569
__sysctl(0x7fffffffe6c0,0x2,0x7fffffffe650,0x7fffffffe6b8,0x800844970,0x11) = 0
(0x0)
25.052947791 __sysctl(0x7fffffffe650,0x3,0x801000000,0x7fffffffe720,0x0,0x0) = 0
(0x0)
25.054030610 munmap(0x801000000,1048576) = 0 (0x0)
25.055022356 sigaction(SIGTSTP,{ SIG_IGN SA_RESTART ss_t },{ 0x800cb2470
SA_RESTART ss_t }) = 0 (0x0)
25.055067892 poll({0/POLLIN},1,0) = 0 (0x0)
25.055130470 poll({0/POLLIN},1,0) = 0 (0x0)
25.055230203 write(1,"\^[[4;11H1\^[[7C4 64 203.4"...,203) = 203
(0xcb)
25.055263448 sigaction(SIGTSTP,{ 0x800cb2470 SA_RESTART ss_t },0x0) = 0 (0x0)
26.055866597 nanosleep({1.000000000}) = 0 (0x0)
26.055900400 gettimeofday({1201742443.194324},0x0) = 0 (0x0)
26.055940070 poll({0/POLLIN},1,0) = 0 (0x0)
26.055969962 gettimeofday({1201742443.194394},0x0) = 0 (0x0)
26.056009073 clock_gettime(0,{1201742443.194433649}) = 0 (0x0)
26.056240388 sigaction(SIGTSTP,{ SIG_IGN SA_RESTART ss_t },{ 0x800cb2470
SA_RESTART ss_t }) = 0 (0x0)
26.056280896 poll({0/POLLIN},1,0) = 0 (0x0)
26.056334534 poll({0/POLLIN},1,0) = 0 (0x0)
26.056420299 poll({0/POLLIN},1,0) = 0 (0x0)
26.056485112 write(1,"\^[[1;6H6.046s w: 1.000s\^[[4;5"...,305) = 305
(0x131)
26.056516121 sigaction(SIGTSTP,{ 0x800cb2470 SA_RESTART ss_t },0x0) = 0 (0x0)
27.056863372 nanosleep({1.000000000}) = 0 (0x0)
[/truss -o t.txt -p 61629 -d]
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At 08:24 PM 1/30/2008, Steven Hartland wrote:>The plot thickens.... This stall is not just related to newfs you have to >have gstat running as well. If I do the newfs without gstat running then >no stall occurs. As soon as Im running gstat while doing the newfs then >everything locks as described.Strange, I see the same thing sometimes. While running while true do date sleep .5 done Thu Jan 31 14:55:42 EST 2008 Thu Jan 31 14:55:42 EST 2008 Thu Jan 31 14:55:43 EST 2008 Thu Jan 31 14:55:43 EST 2008 Thu Jan 31 14:55:44 EST 2008 Thu Jan 31 14:55:44 EST 2008 Thu Jan 31 14:55:50 EST 2008 Thu Jan 31 14:55:50 EST 2008 Thu Jan 31 14:55:51 EST 2008 Thu Jan 31 14:55:51 EST 2008 Thu Jan 31 14:55:52 EST 2008 Thu Jan 31 14:55:52 EST 2008 Thu Jan 31 14:55:53 EST 2008 Thu Jan 31 14:55:53 EST 2008 Thu Jan 31 14:55:54 EST 2008 You can see it from 44 to 50 seconds, This is AMD64 da0 at arcmsr0 bus 0 target 0 lun 0 da0: <Areca ARC-1210-VOL#00 R001> Fixed Direct Access SCSI-5 device da0: 166.666MB/s transfers (83.333MHz DT, offset 32, 16bit) da0: 305175MB (624999424 512 byte sectors: 255H 63S/T 38904C) arcmsr0: <Areca SATA Host Adapter RAID Controller > mem 0xe8600000-0xe8600fff,0xe8000000-0xe83fffff irq 18 at device 14.0 on pci2 ARECA RAID ADAPTER0: Driver Version 1.20.00.15 2007-10-07 ARECA RAID ADAPTER0: FIRMWARE VERSION V1.43 2007-4-17 arcmsr0: [ITHREAD]>Running truss on gstat shows the issue / cause I believe but I dont >know what it means:- >[truss -o t.txt -p 61629 -d] >9.008933817 nanosleep({1.000000000}) = 0 (0x0) >9.008969017 gettimeofday({1201742426.147393},0x0) = 0 (0x0) >9.009009804 poll({0/POLLIN},1,0) = 0 (0x0) >9.009040534 gettimeofday({1201742426.147465},0x0) = 0 (0x0) >9.009076852 clock_gettime(0,{1201742426.147501706}) = 0 (0x0) >9.009294477 sigaction(SIGTSTP,{ SIG_IGN SA_RESTART ss_t },{ >0x800cb2470 SA_RESTART ss_t }) = 0 (0x0) >9.009335823 poll({0/POLLIN},1,0) = 0 (0x0) >9.009387785 poll({0/POLLIN},1,0) = 0 (0x0) >9.009457626 write(1,"\^[[4;11H 5\^[[6C2 32 467.8"...,213) = 213 (0xd5) >9.009488636 sigaction(SIGTSTP,{ 0x800cb2470 SA_RESTART ss_t },0x0) = 0 (0x0) >10.009930312 nanosleep({1.000000000}) = 0 (0x0) >10.009963836 gettimeofday({1201742427.148388},0x0) = 0 (0x0) >10.010005182 poll({0/POLLIN},1,0) = 0 (0x0) >10.010036192 gettimeofday({1201742427.148461},0x0) = 0 (0x0) >10.010073068 clock_gettime(0,{1201742427.148497922}) = 0 (0x0) >10.010292369 >mmap(0x801000000,1048576,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) >= 34376515584 (0x801000000) >10.010327569 >__sysctl(0x7fffffffe6c0,0x2,0x7fffffffe650,0x7fffffffe6b8,0x800844970,0x11) >= 0 (0x0) >25.052947791 >__sysctl(0x7fffffffe650,0x3,0x801000000,0x7fffffffe720,0x0,0x0) = 0 (0x0) >25.054030610 munmap(0x801000000,1048576) = 0 (0x0) >25.055022356 sigaction(SIGTSTP,{ SIG_IGN SA_RESTART ss_t },{ >0x800cb2470 SA_RESTART ss_t }) = 0 (0x0) >25.055067892 poll({0/POLLIN},1,0) = 0 (0x0) >25.055130470 poll({0/POLLIN},1,0) = 0 (0x0) >25.055230203 write(1,"\^[[4;11H1\^[[7C4 64 203.4"...,203) = 203 (0xcb) >25.055263448 sigaction(SIGTSTP,{ 0x800cb2470 SA_RESTART ss_t },0x0) = 0 (0x0) >26.055866597 nanosleep({1.000000000}) = 0 (0x0) >26.055900400 gettimeofday({1201742443.194324},0x0) = 0 (0x0) >26.055940070 poll({0/POLLIN},1,0) = 0 (0x0) >26.055969962 gettimeofday({1201742443.194394},0x0) = 0 (0x0) >26.056009073 clock_gettime(0,{1201742443.194433649}) = 0 (0x0) >26.056240388 sigaction(SIGTSTP,{ SIG_IGN SA_RESTART ss_t },{ >0x800cb2470 SA_RESTART ss_t }) = 0 (0x0) >26.056280896 poll({0/POLLIN},1,0) = 0 (0x0) >26.056334534 poll({0/POLLIN},1,0) = 0 (0x0) >26.056420299 poll({0/POLLIN},1,0) = 0 (0x0) >26.056485112 write(1,"\^[[1;6H6.046s w: 1.000s\^[[4;5"...,305) = 305 (0x131) >26.056516121 sigaction(SIGTSTP,{ 0x800cb2470 SA_RESTART ss_t },0x0) = 0 (0x0) >27.056863372 nanosleep({1.000000000}) = 0 (0x0) >[/truss -o t.txt -p 61629 -d] > >===============================================>This e.mail is private and confidential between Multiplay (UK) Ltd. >and the person or entity to whom it is addressed. In the event of >misdirection, the recipient is prohibited from using, copying, >printing or otherwise disseminating it or any information contained in it. >In the event of misdirection, illegible or incomplete transmission >please telephone +44 845 868 1337 >or return the E.mail to postmaster@multiplay.co.uk. > >_______________________________________________ >freebsd-performance@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-performance >To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org"
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