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hirose31 id:hirose31

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hirose31 2014/08/18
trim

ssd
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FITRIM/discard - xfs.org
hirose31 2014/02/05
xfs

ssd
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SSDOptimization - Debian Wiki
Translation(s): none This page is about optimal set up of an SSD (Solid State Drive). This page should be kept clean enough for beginners to get the most basic idea. Note that some of the configuration improvements listed below happen automatically today for new installations. WARNING Some firmware versions on some SSD models have bugs that result in data corruption when used in certain ways. For
hirose31 2014/01/06
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ssd
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SSDã®å¯¿å‘½ã‚’ext4ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã®çµ±è¨ˆæƒ…å ±ã‹ã‚‰æŽ¨å®šã™ã‚‹
SSDã‚’é¸å®šã™ã‚‹å ´åˆã«ã¯æ›¸ãè¾¼ã¿é‡ã®æŽ¨å®šãŒé‡è¦ã§ã™ã€‚ NAND Flashã®å„ãƒ–ãƒãƒƒã‚¯ã«æ›¸ãæ›ãˆå›žæ•°ã®ä¸Šé™ãŒã‚ã‚‹SSDã§ã¯æ›¸ãè¾¼ã¿ç·é‡ã«åˆ¶é™ãŒå˜åœ¨ã—ã¾ã™ã€‚ NAND Flashè‡ªä½“ã®æ›¸ãæ›ãˆå›žæ•°ä¸Šé™ã¯å®Ÿè£…ã«ã©ã®ã‚ˆã†ãªæŠ€è¡“ãŒä½¿ã‚ã‚Œã¦ã„ã‚‹ã‹ã«ã‚‚ã‚ˆã‚Šã¾ã™ãŒæ•°åƒå›žã‹ã‚‰10ä¸‡å›žç¨‹åº¦ã€‚HDDã‚„RAMDISKã§ã¯ã“ã®å›žæ•°ä¸Šé™ã¯äº‹å®Ÿä¸Šå˜åœ¨ã—ã¾ã›ã‚“ã€‚ ãã®ãŸã‚SSDã§ã¯ãƒ•ã‚¡ãƒ¼ãƒ ã‚¦ã‚§ã‚¢ã§å„ãƒ–ãƒãƒƒã‚¯ãŒå‡ç‰ã«æ›¸ãæ›ãˆã‚‰ã‚Œã‚‹ã‚ˆã†ã«å·¥å¤«ã—ãŸã‚Šã€å¤–éƒ¨ã«è¦‹ã›ã‚‹ã‚ˆã‚Šå¤šã„å®¹é‡ã®NAND Flashã‚’ç”¨æ„ã—ã¦ãƒ–ãƒãƒƒã‚¯ã‚ãŸã‚Šã®æ›¸ãæ›ãˆå›žæ•°ã‚’æ¸›ã‚‰ã—ãŸã‚Šã€ä¸è‰¯ãƒ–ãƒãƒƒã‚¯ç™ºç”Ÿæ™‚ã«ã‚‚ãŸã ã¡ã«å½±éŸ¿ãŒãªã„ã‚ˆã†ã«ã—ã¦ã„ã¾ã™ã€‚ ã“ã®ãŸã‚ã€ã‚³ãƒ³ã‚·ãƒ¥ãƒ¼ãƒžå‘ã‘ã§ã¯è¨˜è¼‰ãŒãªã„ã‚‚ã®ã‚‚ã‚ã‚Šã¾ã™ãŒã€ã‚¨ãƒ³ã‚¿ãƒ¼ãƒ—ãƒ©ã‚¤ã‚ºå‘ã‘SSDã§ã¯å¿…ãšç·æ›¸ãè¾¼ã¿ä¸Šé™ã«ã¤ã„ã¦è¨˜è¼‰ãŒã‚ã‚Šã¾ã™ã€‚ é©å½“ã«ããã£ãŸIntelã®SSDä»•æ§˜ã®ä¾‹: http://ark.intel.com/ja
hirose31 2013/12/09
ssd

ext4
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D21 dbts tokyo_2013_ssd
10. SSDã¯â€¦ â€œå¤¢ã®ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸â€ã§ã¯ã‚ã‚Šã¾ã›ã‚“!! ç‰¹ã«ä¿å˜ï¼ˆã‚¢ãƒ¼ã‚«ã‚¤ãƒ–ï¼‰ç”¨ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã«ã¯å‘ã„ã¦ã„ã¾ã›ã‚“ã€‚ ã‚ã‚‹ã‚¨ãƒ³ã‚¿ãƒ¼ãƒ—ãƒ©ã‚¤ã‚ºå‘ã‘SSDãƒ¡ãƒ¼ã‚«ãƒ¼ã®ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ Your data will be there in the morning. ã—ã‹ã—å¼±ç‚¹ã‚’ç†è§£ã—ãŸä¸Šã§åˆ©ç”¨ã™ã‚Œã°ã€çš†ã•ã‚“ã®æ‚©ã¿ã‚’è§£æ±ºã™ã‚‹å¤§ã ãªæ¦å™¨ã«!! ãã“ã§æœ¬æ—¥ã¯æ™‚é–“ã®è¨±ã™é™ã‚Šã€ãŠè´ãã«ãªã£ã¦ã„ã‚‹ã®ãŒãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹æŠ€è¡“è€…ã§ã‚ã‚‹ ã“ã¨ã‚’å‰æã«ã€SSDã‚’é¸æŠžã™ã‚‹ã«ã‚ãŸã£ã¦æœ€ä½Žé™çŸ¥ã£ã¦ã„ãŸã ããŸã„ã“ã¨ã«çµžã£ã¦ãŠ è©±ã‚’é€²ã‚ã¾ã™ã€‚ ãªãŠæœ¬ã‚»ãƒŸãƒŠãƒ¼ã§ã¯ç¾åœ¨å¸‚å ´ã§å…¥æ‰‹å¯èƒ½ãªã€ã€ŒNANDåž‹ãƒ¡ãƒ¢ãƒªãƒ•ãƒ©ãƒƒã‚·ãƒ¥ï¼ˆâ€»ï¼‰ã€ ã‚’è¨˜æ†¶ç´ åã¨ã—ã¦æè¼‰ã—ãŸã€SSDã‚’å‰æã«ã”èª¬æ˜Žã—ã¦ã„ã¾ã™ã€‚ â€» NANDï¼ˆãƒŠãƒ³ãƒ‰ï¼‰ã¨ã¯ã€ŒNot ANDã€ã®ç•¥ã§è«–ç†å›žè·¯ã®ä¸€ç¨®ã§ã€ã“ã®ä»•çµ„ã¿ã‚’æŽ¡ç”¨ã— ã¦ã„ã‚‹ãƒ•ãƒ©ãƒƒã‚·ãƒ¥ãƒ¡ãƒ¢ãƒªãŒNANDåž‹ãƒ•ãƒ©ãƒƒã‚·ãƒ¥ãƒ¡ãƒ¢ãƒªã¨ãªã‚Šã¾ã™ã€‚ã“ã®è³‡æ–™ã«ãŠã„ã¦
hirose31 2013/11/21
ssd
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ã‚µãƒ¼ãƒç”¨é€”ã§ã‚³ãƒ³ã‚·ãƒ¥ãƒ¼ãƒž SSD ã¸èª¿åã«ä¹—ã£ã¦æ›¸ãè¾¼ã¿ã™ãŽã‚‹ã¨å£Šã‚Œã‚‹ã¨ã„ã†è©± - muraæ—¥è¨˜ (halfrack)
Crucial M500 ã® write endurance ãŒ 75TB ã—ã‹ç„¡ã„ã¨ã„ã†ã®ãŒè©±é¡Œã«ãªã£ã¦ã„ã¦ã€åŒã˜ã 75TB ã§ã‚ã‚‹ m4 ã‚’ã‚ã–ã¨è™å¾…ã—ã¦ã„ãŸãƒ›ã‚¹ãƒˆã¯ã©ã†ãªã£ãŸã®ã‹æ°—ã«ãªã£ã¦èª¿ã¹ã¦è¦‹ãŸã¨ã“ã‚ã€é¢ç™½ã„çµæžœãŒè¦³æ¸¬ã•ã‚ŒãŸã¨ã„ã†è©±ã€‚ çŸ³æ©‹ã‚’å©ã„ã¦å£Šã—éšœå®³æ™‚ã®æŒ™å‹•ã‚’è¦‹ã‚‹ã¹ãã€Œè‡ªç¤¾å…¨ã‚µãƒ¼ãƒ“ã‚¹ã®ã‚¢ã‚¯ã‚»ã‚¹ãƒã‚°ã‚’å—ã‘æ¢ã‚ã‚‹ syslog ã‚µãƒ¼ãƒã€ã¨ã„ã†ã€ã©ã†è¦‹ã¦ã‚‚æ›¸ãè¾¼ã¿ä¸å¿ƒã§ SSD ã«ã‚„ã•ã—ããªã„ãƒ›ã‚¹ãƒˆã‚’ã‚ãˆã¦å‹•ã‹ã—ã¦ã„ãŸã€‚å…·ä½“çš„ã«ã¯ä¸‹è¨˜ã®ã‚ˆã†ãªãƒŽãƒªã®ãƒ›ã‚¹ãƒˆã§ã‚ã‚‹ã€‚ iostat ã®ä¸€è¡Œç›®ãªã®ã§ uptime æ•°ç™¾æ—¥ã«ãŠã‘ã‚‹å¹³å‡å€¤ã§ã‚ã‚‹ã“ã¨ã«æ³¨æ„ã€‚ [root@touge ~]# iostat -k -x -d sda | sed -n '3,4p' Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await
$ã‚µãƒ¼ãƒç”¨é€”ã§ã‚³ãƒ³ã‚·ãƒ¥ãƒ¼ãƒž SSD ã¸èª¿åã«ä¹—ã£ã¦æ›¸ãè¾¼ã¿ã™ãŽã‚‹ã¨å£Šã‚Œã‚‹ã¨ã„ã†è©± - muraæ—¥è¨˜ (halfrack)$
hirose31 2013/04/17
ssd
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SSDã«å¯¾ã™ã‚‹Block Discard/TRIMã‚’SystemTapã§å¯è¦–åŒ–ã™ã‚‹ - SH2ã®æ—¥è¨˜
ãƒ‘ã‚½ã‚³ãƒ³ã‚’è²·ã„ã¾ã—ãŸã€‚ CPUï¼šIntel Core i5-2400S Motherboardï¼šASUS P8H67-M EVO Memoryï¼šPatriot PSD38G1333KH 4GBÃ—2 2å€‹ SSDï¼šIntel X25-M G2 120GB HDDï¼šHGST Deskstar 5K3000 2TB Power Supplyï¼šOwltech Xseries SS-650KM ä»Šå›žã¯OLIOSPECã•ã‚“ã®Micro Monster H67 Super Silentã‚’ã‚«ã‚¹ã‚¿ãƒžã‚¤ã‚ºã—ã¦æ³¨æ–‡ã—ã¾ã—ãŸã€‚ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—æ©Ÿã‚’ãƒªãƒ—ãƒ¬ã‚¤ã‚¹ã™ã‚‹ã®ã¯å®Ÿã«9å¹´ã¶ã‚Šãªã®ã§ã™ãŒã€æœ€è¿‘ã®ãƒ‘ã‚½ã‚³ãƒ³ã¯ã™ã”ãè‰¯ã„ã§ã™ãã€‚é€Ÿãã¦é™ã‹ã§ä½Žæ¶ˆè²»é›»åŠ›ã§ã™ã€‚æœ¬æ—¥ã¯ã“ã®ãƒ‘ã‚½ã‚³ãƒ³ã‚’ä½¿ã£ã¦ã€è¿‘å¹´ã®Linuxã«ãŠã‘ã‚‹SSDäº‹æƒ…ã‚’ç¢ºèªã—ã¦ã„ããŸã„ã¨æ€ã„ã¾ã™ã€‚ TRIMã¨ã¯ è¿‘é ƒã§ã¯å®šç•ªSSDã®åº§ã‚’ã™ã£ã‹ã‚ŠCrucial RealSSD
hirose31 2013/04/09
TRIM discard

linux

ssd

ext4
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Linuxã‚µãƒ¼ãƒãƒ¼ã«SSDã‚’ä½¿ã†ãŸã‚ã®æƒ…å ±ãƒ¡ãƒ¢ - æ°—ã¾ã¾ã«ã‚¤ãƒ³ãƒ•ãƒ©ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢
Trimå‘¨ã‚ŠãŒæœ€è¿‘ã©ã†ãªã£ã¦ã„ã‚‹ã®ã‹èª¿ã¹ã¦ã„ã¾ã—ãŸãŒã€ãã‚Œä»¥å¤–ã®æƒ…å ±ã‚‚ã¾ã¨ã¾ã£ã¦ã„ã‚‹ã‚‚ã®ã®ãŒæ¡ˆå¤–å°‘ãªã‹ã£ãŸã®ã§ã€‚ Trimã‚’ã‚µãƒ¼ãƒãƒ¼ã§ä½¿ãˆã‚‹ï¼Ÿ # Trimã‚³ãƒžãƒ³ãƒ‰ã®ã‚µãƒãƒ¼ãƒˆã®ç¢ºèªï¼ˆSSDå´ï¼‰ hdparm -I /dev/sda | grep -i TRIM * Data Set Management TRIM supportedTrimã‚³ãƒžãƒ³ãƒ‰ã®ç™ºè¡Œã«ã¯SSDã‚’SATAã®AHCIãƒ¢ãƒ¼ãƒ‰ã§æŽ¥ç¶šã™ã‚‹ã“ã¨ãŒå¿…è¦ã€‚ RAIDã‚«ãƒ¼ãƒ‰çµŒç”±ã§SSDã‚’æŽ¥ç¶šã—ãŸå ´åˆã€SSDã‚’ç›´æŽ¥æ‰±ãˆãªã„ã®ã§Trimã¯ä½¿ãˆãªã„ã€‚ 2012/05ç¾åœ¨ã€Trimã«å¯¾å¿œã—ãŸRAIDã‚«ãƒ¼ãƒ‰ã¯ãªã„ã‚ˆã†ã ã€‚ ï¼ˆãŸã ã—ã€ext4ã®discardã‚³ãƒžãƒ³ãƒ‰ã¯å†…éƒ¨çš„ã«ã¯SCSIãƒ‡ãƒã‚¤ã‚¹ã«å¯¾ã—ã¦UNMAPã‚³ãƒžãƒ³ãƒ‰ãŒç™ºè¡Œã•ã‚Œã‚‹ã®ã§ã€ä»Šå¾ŒRAIDã‚«ãƒ¼ãƒ‰å´ãŒATAã‚³ãƒžãƒ³ãƒ‰ã®Trimã«å†åº¦å¤‰æ›ã—ã¦ãã‚Œã‚Œã°â€¦ï¼Ÿç„¡ç†ã‹ãªï¼‰ ä¸€èˆ¬çš„ãª1Uã‚µãƒ¼ãƒãƒ¼ã§ã¯ã»ã¨ã‚“
hirose31 2012/10/16
ssd
ãƒªãƒ³ã‚¯
ã‚¤ãƒ³ãƒ†ãƒ«ã€PCIe x8æŽ¥ç¶šã§æœ€å¤§ãƒªãƒ¼ãƒ‰2GB/secã®SSDã€Œ910ã€
hirose31 2012/04/15
ssd
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Engadget | Technology News & Reviews
My iPhone 11 is perfectly fine, but the new buttons on the iPhone 16 are compelling
hirose31 2012/01/30
ssd
ãƒªãƒ³ã‚¯
SSD: Free space and write performance
All of Perconaâ€™s open-source software products, in one place, to download as much or as little as you need.
hirose31 2010/07/30
ssd
ãƒªãƒ³ã‚¯
SAS SSD Festplatten fÃ¼r Server gÃ¼nstig kaufen | ServerShop24
HPE 1.6TB 12G SAS MU SSD 2.5" SFF Solid State Disk (MV) mit Smart Carrier - 873570-001 / 873365-B21
hirose31 2010/07/16
ssd
ãƒªãƒ³ã‚¯
SSDã¨TokyoTyrantã‚„MySQLã®æ€§èƒ½æ¤œè¨¼
2. 2 çµŒç·¯ â€¢ ä»Šå¾Œã€ã‚½ãƒ¼ã‚·ãƒ£ãƒ«ã‚¢ãƒ—ãƒªé–‹ç™ºã§SSDã‚„ TokyoTyrantãªã©ã‚’ä½¿ã„ãŸã„ â€¢ ãƒ¡ãƒ¼ã‚«ãƒ¼ã•ã‚“ã®ãŠã‹ã’ã§ã€SSDæè¼‰ã‚µãƒ¼ãƒã® è©•ä¾¡æ©Ÿã‚’2é€±é–“å€Ÿã‚Šã‚‰ã‚Œã‚‹ã“ã¨ã«ãªã£ãŸ â€¢ æ˜¯éžæ¤œè¨¼ã—ãŸã„ï¼ 3. 3 ç›®çš„ â€¢ SSDæè¼‰ã‚µãƒ¼ãƒã¯30ä¸‡å††ãã‚‰ã„ãƒ—ãƒ©ã‚¹ã«ãªã‚‹ ã®ã§ã€è²»ç”¨å¯¾åŠ¹æžœã‚’çŸ¥ã‚ŠãŸã„ â€¢ SSDã¨HDDã®æ€§èƒ½ã‚„ç‰¹å¾´ã«ã¤ã„ã¦èª¿æŸ»ã™ã‚‹ â€¢ ç‰¹ã«ã€TokyoTyrantãªã©ã®ãƒŸãƒ‰ãƒ«ã‚¦ã‚§ã‚¢ã¨ã®ç›¸ æ€§ã«ã¤ã„ã¦èª¿æŸ»ã™ã‚‹ 4. 4 ã‚µãƒ¼ãƒã‚¹ãƒšãƒƒã‚¯ãƒ»æ¤œè¨¼ç’°å¢ƒ â€¢ ã‚µãƒ¼ãƒã‚¹ãƒšãƒƒã‚¯ â€“ CPU: ã€ŒXeon E5502 @ 1.87GHzã€ Ã—ï¼’(Dual)Ã—ï¼’ â€“ DISK â€¢ SSD RAID1 46GB ï¼ˆOSã€ãƒã‚°ç‰ç”¨ï¼‰ â€¢ SSD RAID1 46GB ï¼ˆãƒ‡ãƒ¼ã‚¿ç”¨ï¼‰ â€¢ HDD(10000RPM) RAID1 67GBï¼ˆãƒ‡ãƒ¼ã‚¿ç”¨ï¼‰ â€“ OS: CentOS 5 (è¨å®šã¯ã»ã¨ã‚“ã©ã„ã˜ã£ã¦ã„
hirose31 2010/06/16
Tokyo Tyrant

mysql

ssd
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Intel iQ Japan -
Intel.com ã‚µãƒ¼ãƒã‚’ä½¿ç”¨ ã„ãã¤ã‹ã®æ–¹æ³•ã§ Intel.com ã®ã‚µã‚¤ãƒˆå…¨ä½“ã‚’ç°¡å˜ã«æ¤œç´¢ã§ãã¾ã™ã€‚ è£½å“å: Core i9 æ–‡æ›¸ç•ªå·: 123456 é–‹ç™ºã‚³ãƒ¼ãƒ‰å: Alder Lake ç‰¹åˆ¥ãªæ¼”ç®—å: â€œIce Lakeâ€, Ice AND Lake, Ice OR Lake, Ice*
hirose31 2010/05/15
ssd

smart
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Should I buy a Fast SSD or more memory?
While a scale-out solution has traditionally been popular for MySQL, itâ€™s interesting to see what room we now have to scale up â€“ cheap memory, fast storage, better power efficiency.Ã‚Â There certainly are a lot of options now â€“ Iâ€™ve been meeting about a customer/week using Fusion-IO cards.Ã‚Â One interesting choice Iâ€™ve seen people make however, is buying an SSD when they still have a lot of pages r
hirose31 2010/04/20
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mysql

ssd
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United States
GenAI compliance is an oxymoron. Ways to make the best of itHow can CIOs tell customers what data is being collected about them and how it is being used if the CIOs themselves donâ€™t know exactly what their genAI tools are doing?
hirose31 2010/04/09
ssd
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InnoDB Pluginã“ã¨ã¯ã˜ã‚ã€‚å¿«é©ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã‚¨ãƒ³ã‚¸ãƒ³ç”Ÿæ´»ã¯ã˜ã¾ã‚‹ï¼
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hirose31 2010/03/11
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innodb plugin

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Kazuho@Cybozu Labs: æ—¢è£½å“ã®ç®¡ç†ãƒ„ãƒ¼ãƒ«ã‚’ä½¿ã‚ãªã„ã“ã¨ã§ã‚¦ã‚§ãƒ–ã‚µãƒ¼ãƒ“ã‚¹ã® TCO ã‚’ä¸‹ã’ã‚‹è©±ã«ã¤ã„ã¦ hbstudy#8 ã§è©±ã—ã¦ããŸä»¶
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hirose31 2010/02/24
kazuho

hbstudy

ssd

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IBM Systems Energy Estimator
Experience it right now See it in action with Storage Insights With Flash Grid architecture you can manage storage in a highly available and scala ble environment from a single control pane with AI-powered workload placement recommendations and non-disruptive migration between systems. Flash Grid reduces data silos and allows you to spend less time on storage management, with guaranteed availabilit
hirose31 2010/02/03
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