Please reply to my personal email as well as I am not subscribed to the list. I have a PP120GS25SSDR it does support trim cat /sys/block/sdc/queue/discard_max_bytes 2147450880 The entire drive is one partition that is totally used by LVM. I made a test vg and formatted it with mkfs.xfs. Then mounted it with discard and got the following result when deleting a kernel source: /dev/mapper/ssdvg0-testLV on /media/temp type xfs (rw,noatime,nodiratime,discard) time rm -rf linux-3.2.6-gentoo/ real 5m7.139s user 0m0.080s sys 0m1.580s There where lockups where the system would pause for about a minute during the process. ext4 handles this scenerio fine: /dev/mapper/ssdvg0-testLV on /media/temp type ext4 (rw,noatime,nodiratime,discard) time rm -rf linux-3.2.6-gentoo/ real 0m0.943s user 0m0.050s sys 0m0.830s xfs mounted without discard seems to handle this fine: /dev/mapper/ssdvg0-testLV on /media/temp type xfs (rw,noatime,nodiratime) time rm -rf linux-3.2.6-gentoo/ real 0m1.634s user 0m0.040s sys 0m1.420s uname -a Linux core24 3.2.5-gentoo #11 SMP PREEMPT Sat Feb 11 15:46:22 EST 2012 x86_64 Intel(R) Core(TM)2 Quad CPU Q6700 @ 2.66GHz GenuineIntel GNU/Linux Any suggestions?
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