From: RaghuNath L(Raghu) (LRaghuNath@Lucent.Com)
Date: Wed Mar 26 2003 - 08:25:03 EST
Dear Managers,
Thanks to
Pablo jejcic,
Christophe Dupre,
Greg Ulyatt,
Tim Chipman,
Kevin Buterbaugh,
Darren Dunham ,
Morgon jones,
Cris Lovett,
Paulo Afonso Graner Fessel,
Hichael Morton,
John Stoffel.
Lot of people in the list suggested memory and I/O intensive application
bottle necks but Christophe Dupre hit nail on it's head.
It was plain defragmentation of vxfs file system which solved the problem.
I can still see lot of I/O but not feeling any slowness in running
Builds with this server.
Once agnin thanks All, Defrag method will availble in
/opt/VRTSvxfsdoc/sys_admin direcotry
as pdf file.
Myself and Sun Asia pecific team had spent complete 7 day's and nights
in one strech to find out any H/W problem.
Vxfs is extant based file systems requires defrag on file systems with
high writes with some time line.
RaghuNath L
Systems Administrator
Lucent Technologies -IIDC
>
>
> -----Original Message-----
> From: sunmanagers-admin@sunmanagers.org
> [mailto:sunmanagers-admin@sunmanagers.org] On Behalf Of RaghuNath L(Raghu)
> Sent: 19 March 2003 10:09
> To: sunmanagers@sunmanagers.org
> Subject: Cpu bottleneck ?
>
>
> Dear Managers,
>
> We facing performance problem with a 420 connected to T3+ (1 gb cache)this
> server used as Clearcase vob server.
>
> Here are the statistics,
>
> Top out put shows not much of user or kernel process running but still cpu
> availability is only 8 % but there is no cpu intensive applications running
> on it. It's a fully loaded 420R with 4 cpu 4 Gb Ram.
>
> last pid: 14377; load averages: 0.84, 0.72, 0.58
> 14:56:24
> 248 processes: 246 sleeping, 1 stopped, 1 on cpu
> CPU states: 8.0% idle, 5.2% user, 5.2% kernel, 81.6% iowait, 0.0% swap
> Memory: 4096M real, 62M free, 469M swap in use, 10G swap free
>
> Mpstat output.
>
> Out put shows processors are getting loaded ( data below idle column)
>
> but there is no load by either user or kernel it's just around 11 % where
> all the cpu cycles are utilised ?
>
> I/o wait is alarmingly high.
>
>
> 0 0 3 1201 194 193 225 1 9 5 0 1058 3 2
> 65 30
> 1 0 6 628 400 200 165 0 12 4 0 668 2 2
> 88 8
> 2 0 4 477 386 385 229 1 13 8 0 765 2 3
> 81 14
> 3 0 6 641 107 105 232 2 9 3 0 904 2 2
> 74 22
> CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
> 0 2 10 1682 200 198 180 3 17 10 0 914 3 3
> 94 0
> 1 2 14 569 404 200 298 3 14 3 0 591 1 1
> 89 9
> 2 1 4 328 439 439 234 1 12 17 0 708 1 1
> 54 44
> 3 1 10 745 112 109 246 1 24 15 0 611 2 2
> 90 6
> CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
> 0 5 4 1377 191 189 238 3 12 8 0 522 2 1
> 45 52
> 1 0 8 584 402 200 309 2 11 8 0 545 2 3
> 93 3
> 2 0 4 211 558 556 312 3 10 4 0 1055 3 2
> 63 32
> 3 0 12 1085 105 102 329 2 15 10 0 940 3 4
> 87 6
> CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
> 0 2 8 2082 187 186 193 2 20 10 0 948 1 2
> 73 24
> 1 0 14 1240 402 200 314 2 9 5 0 723 1 3
> 57 39
> 2 0 11 781 335 333 186 2 12 12 0 735 3 2
> 79 16
> 3 32 9 1868 103 101 178 2 17 7 0 498 0 2
> 97 1
> CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
> 0 1 17 1738 224 222 286 3 18 9 0 1767 3 3
> 52 42
> 1 0 15 1083 403 200 233 4 18 15 0 1171 3 3
> 79 15
> 2 0 20 1326 534 529 371 4 14 18 0 2291 8 5
> 77 11
> 3 0 9 1262 106 101 344 5 18 10 0 1861 5 4
> 91 0
> CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
> 0 1 30 3172 246 242 358 6 17 11 0 2010 3 6
> 66 25
> 1 1 17 1230 407 200 386 9 27 14 0 2271 8 5
> 72 15
> 2 2 26 823 570 562 280 9 21 13 0 1684 5 6
> 61 28
> 3 1 23 1570 109 102 363 7 21 10 0 1872 2 6
> 85 7
> CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
> 0 0 14 1764 226 223 348 5 27 14 0 838 2 4
> 80 13
> 1 1 19 940 403 200 321 3 37 20 0 1577 2 4
> 87 8
> 2 3 13 1498 570 557 350 13 36 19 0 1290 4 5
> 64 26
> 3 1 14 623 106 101 389 7 22 18 0 1581 3 7
> 74 16
>
> But on sunfire 6800 cpu utilization is proportional to kernal and users
> processes .
>
> load averages: 2.43, 2.30, 1.82
> 15:03:12
> 2871 processes:2857 sleeping, 2 zombie, 8 stopped, 4 on cpu
> CPU states: 67.9% idle, 20.3% user, 6.8% kernel, 5.0% iowait, 0.0% swap
> Memory: 16G real, 8315M free, 6718M swap in use, 14G swap free
>
> Kidly help us i will summarize.
>
> regards
> Raghu
> Ra
> _______________________________________________
> sunmanagers mailing list
> sunmanagers@sunmanagers.org
> http://www.sunmanagers.org/mailman/listinfo/sunmanagers
_______________________________________________
sunmanagers mailing list
sunmanagers@sunmanagers.org
http://www.sunmanagers.org/mailman/listinfo/sunmanagers
This archive was generated by hypermail 2.1.7 : Wed Apr 09 2008 - 23:26:03 EDT