On Thu, 2002-11-28 at 13:56, dballester@kernpharma.com wrote: > Hi to all: <cut> > Well, after upgrade from RedHat 7.3, booting to init 5, 90% of memory > seems occupied. If I start any 'big' application as Mozilla, swap to disk > begins :(. It could be Gnome2+mozilla is a bit too much for 128mb. I assume doubling the memory of those machines would help a lot. Maybe try another browser (galeon, opera, konq) with a lower memory footprint... Is the swapping really hurting performance? On my 512mb system there's still a bit of swapping when the kernel decides memory can better be used for disk cache than just for holding unused program data... > System monitor claims that X server is near to 80 MB, is normal? My > resolution is 1280x1024x24bpp. The memory allocated by the X server includes memory for the framebuffer and backing store, most of which is virtual address space mapped in by the X server. It's not really using 80mb ram, but I don't know how much it's really using... > I had added the next hdparm values : -c1 -d1 -W1 -p4 -X69 -u1-m0 ( > m16 slows transfer rates in -tT tests ) Does setting the pio mode _and_ the dma mode make sense? The hdparm man page says you shouldn't have to fiddle with the -X setting. Is your transfer rate better after running this hdparm command than before? > Not recompiled kernel yet. I did; doesn't make that much of a performance difference... even the pre-emptable/low latency kernel patches don't give me really noticable improvement. > I'had looking in www for tips about performance, but a lot of them > seems to be outdated. > I will recompile all src.rpms, any tip obout optimizations flags? ( > I'm evaluating different combinations and pretend to use -02 -march=i686 > -fomit-frame-pointer -malign-functions=4 -mpreferred-stack-boundary=2 with > gcc 3) Have you measured performance increase with those settings? Redhat 8 is already compiled with i686 optimizations (although code should still run on older pentium-class machines). This will not give your system the "boost" some people think it will... > Any type or advice? Don't waste your time recompiling stuff. The packages Redhat delivers are _almost_ optimized, so there's not much to gain that way. Instead, try leaner software and/or increasing memory. greets, Klaasjan -- Psyche-list mailing list Psyche-list@redhat.com https://listman.redhat.com/mailman/listinfo/psyche-list
