search for: pmis

Displaying 10 results from an estimated 10 matches for "pmis".

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2009 Oct 15
8
sub-optimal ZFS performance
...58 1% Free (cachelist) 6849 26 1% Free (freelist) 399498 1560 39% Total 1027660 4014 Physical 1027659 4014 arcstat first run: Time read miss miss% dmis dm% pmis pm% mmis mm% arcsz c 21:02:31 279 19 7 11 4 7 30 11 10 439M 3G 21:12:31 190 60 31 52 28 8 97 60 32 734M 3G 21:22:31 225 58 25 57 25 0 94 58 25 873M 3G 21:32:31 206 51 24 51 24...
2010 Mar 02
9
Filebench Performance is weird
...same workload is disappointing , notice that the throughput dropped from 1307.7 mb/s to 2.7 mb/s !!!!!!!!!!!!!!!!!!!!!!1 My ARC_max is 3G Here is a snapshot of my arcstat output in case of high throughput --- notice the 100% hits ratio arcsz,read,hits,Hit%,miss,miss%,dhit,dh%,dmis,dm%,phit,ph%,pmis,pm%,mhit,mh%,mmis,mm%,mfug,mrug, 1G, 31M, 31M, 99,111K, 0, 28M, 99, 99K, 0, 2M, 99, 12K, 0, 1M, 98, 13K, 1, 43, 43, 1G,147K,145K, 99, 1K, 0, 14K, 99, 2, 0,131K, 99, 1K, 0, 0, 0, 0, 0, 0, 0, 1G,166K,166K, 100, 0, 0, 37K,100, 0, 0,128K,100, 0, 0, 0,...
2009 Jan 24
3
zfs read performance degrades over a short time
I appear to be seeing the performance of a local ZFS file system degrading over a short period of time. My system configuration: 32 bit Athlon 1800+ CPU 1 Gbyte of RAM Solaris 10 U6 SunOS filer 5.10 Generic_137138-09 i86pc i386 i86pc 2x250 GByte Western Digital WD2500JB IDE hard drives 1 zfs pool (striped with the two drives, 449 GBytes total) 1 hard drive has
2011 Jan 24
0
ZFS/ARC consuming all memory on heavy reads (w/ dedup enabled)
...ache property: NAME PROPERTY VALUE SOURCE somepool primarycache all local rpool/swap primarycache metadata local ./arcstat.pl (last few lines before the system locks up): Time read miss miss% dmis dm% pmis pm% mmis mm% arcsz c 15:56:34 121K 247 0 243 0 4 0 178 1 151M 402M 15:56:35 0 0 0 0 0 0 0 0 0 137M 402M 15:56:36 14K 25 0 25 0 0 0 24 0 265M 402M 15:56:37 381K 575 0 575 0 0 0...
2007 Dec 11
13
[PATCH] Enable Core 2 Duo Performance Counters in HVM guest
Hi, Keir, Currently, HVM guests do not have access to performance counters. So it is not possible to use performance analyzer software such as vtune in HVM guest to analyze programme performance. Other usage of performance counters , for example, the NMI watchdog, won''t function either. This patch will enable performance counters in HVM guest. Currently, only Core 2 Duo is implemented.
2011 Apr 25
3
arcstat updates
...: ARC misses per second dm% : Demand data miss percentage hsz : ARC header size dhit : Demand data hits per second pread : Prefetch accesses per second dread : Demand data accesses per second l2miss : L2ARC misses per second pmis : Prefetch misses per second time : Time l2bytes : Bytes read per second from the L2ARC pm% : Prefetch miss percentage mm% : Metadata miss percentage hits : ARC reads per second throt : Memory throttles per second mfu : MFU...
2011 Jan 12
6
ZFS slows down over a couple of days
Hi all, I have exchanged my Dell R610 in favor of a Sun Fire 4170 M2 which has 32 GB RAM installed. I am running Sol11Expr on this host and I use it to primarily serve Netatalk AFP shares. From day one, I have noticed that the amount of free RAM decereased and along with that decrease the overall performance of ZFS decreased as well. Now, since I am still quite a Solaris newbie, I seem to
2005 Apr 06
3
Re:
...pvXJHnFyFSmdluUwODDgQZIiDJVok xZuLDTbijTh7+xKTfJ3VfU+cmOi2JjTJEByilsh0kn94KPsNAySxmLPkvFtZ5Zl+W+O9av1y IdXRT0I3WTGeJlPrlxz1kSVXeXvxVUAd/zFIY/ON3CwE92QfBVwGmad5NrWRgKNgpTtE4ovf yu/0xHaQxl4sAbrPn61h1YSlKtlZU3Fm0uVbHDu0fMNY6mqPLKT1zvD9MDUwu0zTVRkLDRCx 5larnbyRPaMiLhrn87IhwWDAUoCNWWlttDJjPc/mOVs9xjJkY7+PMIS+tDqJqd79U78lBATd 8zoUbj6JgexTcv2frCPtRm1ZkWpWFsTjSLVNeAvT4oAPF9i9AIpuOGUKRPJH2z8Lt/RrfTal t0jblL6KLoLPw4+Mf5aYuEISeNk81+f17hDqrppPSCV0pFOXVCn0nhrzrJySJJjsbTzhJWrj QUD0nuqV2UUY3iYkqJBjBEdZ0LiYLl6LKjgUlknhn2zUM2wnOvYlg/cQT+TQTBKG1mCPB4ua DDTzUi8wjnzVlvXE/jSyE3m90SgD7swmwCEyse/f+NVFcmjj77CvVLwhVua22vP...
2012 Jun 06
24
Occasional storm of xcalls on segkmem_zio_free
So I have this dual 16-core Opteron Dell R715 with 128G of RAM attached to a SuperMicro disk enclosure with 45 2TB Toshiba SAS drives (via two LSI 9200 controllers and MPxIO) running OpenIndiana 151a4 and I''m occasionally seeing a storm of xcalls on one of the 32 VCPUs (>100000 xcalls a second). The machine is pretty much idle, only receiving a bunch of multicast video streams and
2010 Jan 12
11
How do separate ZFS filesystems affect performance?
...09 2682880 227 93 45 89 603304 120660 204344 9179136 1835827 2084864 179 89 23 67 948896 189779 346520 15880192 3176038 4173824 262 108 32 123 # /usr/local/sbin/arcstat 5 5 Time read miss miss% dmis dm% pmis pm% mmis mm% arcsz c 10:50:16 191M 31M 16 14M 8 17M 48 18M 12 30G 32G 10:50:21 1K 148 10 76 5 72 58 78 15 30G 32G 10:50:26 1K 154 12 88 7 65 72 96 18 30G 32G 10:50:31 796 61 7 54 7 6 3...