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| Title: | AdvFS Support/Info/Questions Notefile |
| Notice: | note 187 is Freq Asked Questions;note 7 is support policy |
| Moderator: | DECWET::DADDAMIO |
|
| Created: | Wed Jun 02 1993 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1077 |
| Total number of notes: | 4417 |
1036.0. "Advfs for news service question" by HGOVC::EDMONDLEUNG () Mon Apr 07 1997 11:57
Hi,
One of our customers is using Advfs for the news service. When the news
user is getting more and more (around 400), they have encountered the
performance problem. The response time for posting the news is getting
slower and slower. This customer usually runs the defragmentation
during non-peak hour and the degragmentation process can be completed
around 3 to 4 hours. However, up to the current moment, the
defragmentation process cannot be completed within 4 hours and most
likely the customer needs to kill it manually since this process causes
the performance further degraded.
Attached pls find the defragmenetation log file for the news domain.
Can someone provide any suggestions on how to troubleshoot this problem
and what is the information we need to collect in order to sole this
problem? What'll be the appropriate commands we can use to collect the
useful data?
Thanks and rgds,
Edmond
=======================================================================
Subject: Defragmentation log
Tue Apr 1 11:30:47 HKT 1997
defragment: Defragmenting domain 'news_domain'
Pass 1; Clearing
Volume 1: area at block 9280416 (20847712 blocks): 48% full
./defragment.sh: 22241 Killed
Tue Apr 1 18:10:56 HKT 1997
Wed Apr 2 09:47:08 HKT 1997
defragment: Defragmenting domain 'news_domain'
Pass 1; Clearing
Volume 1: area at block 1856752 (21278416 blocks): 26% full
Domain data as of the start of this pass:
Extents: 130883
Files w/extents: 94295
Avg exts per file w/exts: 1.39
Aggregate I/O perf: 91%
Free space fragments: 53027
<100K <1M <10M >10M
Free space: 8% 20% 28% 44%
Fragments: 42671 8823 1385 148
Filling
defragment.sh: 13734 Killed
Wed Apr 2 18:23:19 HKT 1997
Thu Apr 3 09:41:54 HKT 1997
defragment: Defragmenting domain 'news_domain'
Pass 1; Clearing
Volume 1: area at block 6145696 (21590480 blocks): 43% full
Domain data as of the start of this pass:
Extents: 98620
Files w/extents: 95093
Avg exts per file w/exts: 1.04
Aggregate I/O perf: 99%
Free space fragments: 45515
<100K <1M <10M >10M
Free space: 7% 28% 25% 40%
Fragments: 31516 12457 1412 130
Filling
./defragment.sh: 8671 Killed
Thu Apr 3 17:37:08 HKT 1997
Fri Apr 4 10:47:13 HKT 1997
defragment: Defragmenting domain 'news_domain'
Pass 1; Clearing
Volume 1: area at block 32985952 ( 8890400 blocks): 23% full
Domain data as of the start of this pass:
Extents: 99118
Files w/extents: 96035
Avg exts per file w/exts: 1.03
Aggregate I/O perf: 99%
Free space fragments: 48824
<100K <1M <10M >10M
Free space: 8% 32% 13% 47%
Fragments: 32824 15136 736 128
Filling
Current domain data:
Extents: 97863
Files w/extents: 97246
Avg exts per file w/exts: 1.01
Aggregate I/O perf: 100%
Free space fragments: 29685
<100K <1M <10M >10M
Free space: 4% 16% 13% 67%
Fragments: 21675 7206 658 146
defragment: Defragmented domain 'news_domain'
Fri Apr 4 14:47:09 HKT 1997
sh: defragment: cannot open
Fri Apr 4 14:49:38 HKT 1997
defragment: Defragmenting domain 'news_domain'
Pass 1; Clearing
Volume 1: area at block 1927776 (21296960 blocks): 22% full
Domain data as of the start of this pass:
Extents: 98122
Files w/extents: 97461
Avg exts per file w/exts: 1.01
Aggregate I/O perf: 100%
Free space fragments: 29925
<100K <1M <10M >10M
Free space: 4% 16% 13% 66%
Fragments: 21785 7336 658 146
Filling
./defragment.sh: 12972 Killed
Fri Apr 4 19:21:54 HKT 1997
Sat Apr 5 10:22:23 HKT 1997
defragment: Defragmenting domain 'news_domain'
Pass 1; Clearing
Volume 1: area at block 12047312 (20839904 blocks): 30% full
Domain data as of the start of this pass:
Extents: 102921
Files w/extents: 101372
Avg exts per file w/exts: 1.02
Aggregate I/O perf: 100%
Free space fragments: 35190
<100K <1M <10M >10M
Free space: 5% 24% 9% 63%
Fragments: 24838 9680 549 123
Filling
Current domain data:
Extents: 103241
Files w/extents: 102899
Avg exts per file w/exts: 1.00
Aggregate I/O perf: 100%
Free space fragments: 21038
<100K <1M <10M >10M
Free space: 2% 2% 15% 80%
Fragments: 19483 823 530 202
defragment: Defragmented domain 'news_domain'
Sat Apr 5 21:12:11 HKT 1997
Sun Apr 6 10:38:38 HKT 1997
defragment: Defragmenting domain 'news_domain'
Pass 1; Clearing
Volume 1: area at block 12309184 (20611232 blocks): 58% full
Domain data as of the start of this pass:
Extents: 104709
Files w/extents: 102405
Avg exts per file w/exts: 1.02
Aggregate I/O perf: 99%
Free space fragments: 33822
<100K <1M <10M >10M
Free space: 6% 10% 14% 70%
Fragments: 27891 5260 496 175
Filling
./defragment.sh: 22038 Killed
Sun Apr 6 19:58:29 HKT 1997
Mon Apr 7 10:12:59 HKT 1997
defragment: Defragmenting domain 'news_domain'
Pass 1; Clearing
Volume 1: area at block 3807696 (20217488 blocks): 51% full
./defragment.sh: 21588 Killed
Mon Apr 7 12:25:26 HKT 1997
| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1036.1 | | XIRTLU::schott | Eric R. Schott USG Product Management | Mon Apr 07 1997 13:01 | 17 |
| Hi
You might want to look at the disk performance data...
You may want a multi-volume domain (if it is not already) and you
may want to lsm stripe it across more drives to speed the performance.
You might run sys_check to see if there are other things on the
system to be watched?
You did not mention what version, how much memory...etc...sys_check
will gather that
see
http://www-unix.zk3.dec.com/tuning/tools/sys_check/sys_check.html
|