1.使ç¨Ext4 without journalingæ件系ç»
ä¼ ç»çSSD+Linuxç»åä¸è¬æ¨èExt2æ件系ç»ï¼ä¸»è¦æ¯èèå°Ext3ãExt4éè¦é¢å¤çè®°å½æ¥å¿ï¼ä¼ç¼©çSSD使ç¨å¯¿å½ï¼èä¸æ°åºç°çTRIMææ¯å¨Ext2ä¸æ两个缺ç¹ï¼
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EXT4 & Btrfs On A Serial ATA 3.0
SSDï¼åBtrfsè¿æ ·ä¸ºSSDåå¤çæ件系ç»ä¸å¦Ext4é度快ï¼ç¨SSDä¸å°±ä¸ºäºå¿«ä¹ï¼ã
æ以ï¼ä¸é¢å®è£
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tune2fs -O ^has_journal /dev/sda1
å³å
³é/dev/sda1ä¸çæ¥å¿åè½ã
ç¶åï¼è¿è¡æä½ç³»ç»æ£æµï¼
e2fsck -f /dev/sda1
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æåï¼éå¯ï¼è¿å
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dmesg | grep EXT4
å¦æåºç°ï¼
EXT4-fs (sda1): mounted filesystem without journal
说æ设置æåã
åæ¥æ¯ï¼mounted filesystem with ordered data mode
å¦æéè¦å次å¼å¯æ¥å¿åè½ï¼åªè¦è¿è¡tune2fs -O has_journal /dev/sda1å³å¯ã
2.å¼å¯TRIMåè½
TRIMæ¯ä¸ç§æä½ç³»ç»è°åº¦SSDååå
¥çæ¹å¼ã主è¦æ¯å 为åä¸ä¸ªSSDçéªååå
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uname -a
ç¶åï¼æ£æ¥SSD硬çæ¯å¦æ¯æTRIMï¼
hdparm -I /dev/sda
å¦ææ¾ç¤ºæ¯å¦ï¼ä¸å硬件å¯è½ä¸åæ示ï¼ï¼
* Data Set Management TRIM supported
说ææ¯æã
è¿ä¸¤ä¸ªæ¡ä»¶é½æ»¡è¶³ï¼å¨/etc/fstabä¸å°ï¼
/dev/sda1 / ext4 defaults æ¹ä¸ºï¼
/dev/sda1 / ext4 discard,defaults ååºãæè½½ç¹ãå·²ç»åå¨çé项ä¸ä¸å®ä¸æ ·ã
æµè¯æ°çfstabæ件ï¼
mount -oremount /dev/sda1
ç¶åæè½½ï¼
mount
å¦ææ¾ç¤ºdiscardåæ ·ï¼è¯´ææåï¼å¦ï¼
/dev/sda1 on / type ext4 (rw,discard)
3.swap空é´å¤ç
对äºå¤§å
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容转å°swapä¸ãæäºSSDï¼å¼å
³æºé½å¨å ç§ä¸ï¼å¯¹ææ¥è¯´swap没ç¨ï¼æ以ä¸é¢ç´æ¥ä¸åé
swap空é´ã
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äºä¹è¡ï¼ç©ºé´è¦å°ï¼èä¸éè¿è®¾ç½®/proc/sys/vm/swappinesséé¢çå¼ï¼æ¥åå°swapæ¢åºéï¼
echo 1 > /proc/sys/vm/swappiness
0å°100ä¹é´ï¼å¼è¶å¤§æ¢åºéè¶å¤§ã
4.设置noatime
å½è®¿é®æ件æ¶ï¼ç³»ç»ä¼æ´æ°last-accessè¿ä¸ªæ件/ç®å½å
æ°æ®ï¼è®¾ç½®noatimeåå¯ä»¥åå°è¿ç§æä½ã
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/dev/sda1 / ext4 discard,defaults æ¹ä¸ºï¼
/dev/sda1 / ext4 noatime,discard,defaults æµè¯è®¾ç½®æåæ¹æ³ä¸ä¸é¢ä¸æ ·ã
5.使ç¨noopç£çè°åº¦
é常æä½ç³»ç»è°åº¦æºæ¢°ç¡¬çæ¶ä¼æä¾ä¸äºæ°æ®çç©çä½ç½®ï¼è¿æ ·æå©äºæºæ¢°ç¡¬çä¼å寻éï¼ä½æ¯å¯¹SSD没æä¹ï¼æ以éç¨noopç£çè°åº¦ï¼å³ç®ååé请æ±ï¼å¯ä»¥æé«æçã
å¯ä»¥éè¿ä»¥ä¸å½ä»¤æ¥çè°åº¦æ¹æ³ï¼
cat /sys/block/sda/queue/scheduler
æ¯å¦æ¾ç¤ºï¼
[noop] deadline cfq
å¨/etc/rc.localä¸æ·»å å¦ä¸è¯å¥ï¼
echo noop > /sys/block/sda/queue/scheduler
6.å
åååºå é
å¦æå
åå¤å¤§ï¼å¯ä»¥ç¨ramdiskçæ¹å¼ï¼å°ä¸äºç»å¸¸ååçä½ç½®å¦/tmpæ¾å
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åï¼å å¿«é度ï¼åå°å¯¹SSDç访é®ã
ä¾ç¶æ¯å å¨/etc/fstabä¸ï¼
tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0
tmpfs /var/tmp tmpfs defaults,noatime,mode=1777 0 0
tmpfs /var/log tmpfs defaults,noatime,mode=1777 0 0
æ´æ°æ¹æ³ä¸2ç¸åï¼è®°å¾å°æµè§å¨çç¨åºçç¼åç®å½è®¾ç½®å°/tmpä¸ã
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