Re: 8kblocks

It is now 4k. As far as I can see it is 8k in 7.x and 4k in 9.x. Please correct me if that's not true. Csom Gyula wrote: > Hi, > as documented shared memory is divided into a series of 8k blocks. Recently > I > met two IDS systems that seemed to contradict with this fact. Here's an > onstat -g seg output from a production system: > > Segment Summary: > id key addr size ovhd class blkused blkfree > 1801 1381386241 a000000 62078976 216664 R 15126 30 > 1802 1381386242 db34000 65536000 2600 V 12597 3403 > 1803 1381386243 119b4000 1716224 656 M 419 0 > 1804 1381386244 11b57000 1716224 656 M 419 0 > 1705 1381386245 11cfa000 16777216 1112 V 4054 42 > 1706 1381386246 12cfa000 16777216 1112 V 1734 2362 > 1507 1381386247 13cfa000 16777216 1112 V 1623 2473 > 408 1381386248 14cfa000 16777216 1112 V 747 3349 > 109 1381386249 15cfa000 16777216 1112 V 1 4095 > Total: - - 214933504 - - 36720 15754 > > (* segment locked in memory) > > The first virtual segment's size is 64,000 KB and has 16000 blocks... hmm. > > Here's an onstat -g nbm output for the second virtual portion: > > Block bitmap for virtual segment address 0x12cfa000: > address = 0x12cfa258, size(bits) = 4096 > used = 1734, largest_free = -1 > firstfree = 304, lastalloc=2559 > > 0:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff > ffffffff > 256:ffffffff ffff0075 bffe001f 8602dcfe 30a498ae ffce039a 3ffe0588 > 6e63e80e > 512:bd552063 e42e4df6 669a411e 1e8e7ffe 36650404 39089421 e3006142 > 8807fee0 > 768:0aca0480 07fe4216 4e014c1c 8fdc3000 823ae759 cb410103 448048c3 > 8c00f7ff > 1024:f3a1c852 43808fff c07f692c 29f91802 06574028 64041862 01012002 > da6b9906 > 1280:45c107f3 e1802829 75012740 420a4d04 460290f3 02098802 00409850 > 0731ff9b > 1536:11100c96 50a840a9 07407906 181a0202 482c4503 4211cb89 affb5597 > 89178b42 > 1792:5a65282d 0c50c128 46506654 40c48087 ffe3bf81 b89a82d6 f4877872 > 5c2f4810 > 2048:5ffc4c21 1ffc4002 82903a72 021f0c80 7fe3c086 8660c107 fc1083c2 > 9b084205 > 2304:c00cc1c0 05007384 8f00bc03 ca0a0138 2c102fff c2001570 5e2f600e > 62059f72 > 2560:00002011 82041e5a 301d6000 00800000 0dc607c0 000a4000 01500000 > 4c004006 > 2816:58000871 18100ffe bffffe41 fffc0f80 4f49e1e8 10c0c1ff 20088054 > 2002b806 > 3072:6cf079b0 d1080502 2180b7ff ffffe3c5 802c59c1 f7cae326 18012048 > 050c085c > 3328:f877bca0 9ce3a7c1 37bb83c0 0800a102 3d0d4a0b 00414903 50001202 > 5270c400 > 3584:00400363 e3a8c151 e0000010 1b000701 670c484e 091402fe 0c660001 > c28a0200 > 3840:01829b40 0e300020 04015d20 0830841e 508fff9c 34044e18 094cdefc > cb075057 > > The second virtual segment's size is 16,384 KB. Meanwhile the block bitmap > contains > 4096 bits... > > Regards, > Gyula > -- === Michael Mueller ================== Tel. + 49 8171 63600 Fax. + 49 8171 63615 Web: http://www.mm.kay-mueller.de http://www.planets.kay-mueller.de ======================================