Messages in this thread | | | From | Kimmo Sundqvist <> | Subject | Re: [2.4.20-ck7] good compressed caching experience | Date | Tue, 27 May 2003 17:13:48 +0300 |
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On Tuesday 27 May 2003 00:11, Con Kolivas wrote: > On Tue, 27 May 2003 04:50, Kimmo Sundqvist wrote:
> > Just a warning... both systems have only ReiserFS partitions. Other FSes > > might still get hurt.
> This is definitely the case! If you try out compressed caching with ck7 > please do not enable preempt if you are using ext2/3 or vfat.
Is this a problem in ext2/3, pre-empt implementation, compressed caching or kernel in general?
I think I can still choose between compression methods, or can I? Which one of them, on average, is the least CPU-intensive, and which one gives the best compression ratio? I am also at loss how to interpret the percentages in "cat /proc/comp_cache_stat".
For M$ Windows there was once a program called MagnaRAM97 that had a similar idea, but I don't understand how it could report 2 to 3-fold compression ratios. It always spontaneously rebooted the Pentium 133MHz after some hours, so I uninstalled it.
Just take your time, but will we see a pre-empt safe (or better yet SMP safe) version coming out anytime soon?
Compiling another 2.4.20-ck7 with 8kB pages and swap compression in the background. I have now "mem=896M" to avoid the highmem boundary, even if it wasn't necessary. Someone said somewhere that a 1GB system is faster without highmem support, so I haven't compiled it in for a while.
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