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From: Igmar P. <mai...@jd...> - 2004-10-10 17:04:39
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> I am aware of this, as it makes RedHat 7.2 systems very slow. I've > never really been able to get to the bottom of it though. The time > is all taken during startup - once things are up and running it seems > to be fine. > > The best I was able to work out was that it was something to do with > the memory mapping as strace indicated that mmap was about the only > thing being done during the delay. I observed the same. It's not a kernel issue however : a newer glibc version and the problem goes away. I'll see if I can dig into this myseld. > > I can see VG looping the CPU. To give an indication : > > > > real 1m44.480s > > user 1m31.300s > > sys 0m0.950s > > Interesting that it's all user time. I was thinking it was the kernel > taking a long time to do the mmap calls. I suspect it loops somewhere when parsing symbols. -v indicates that libs.so is the only problem, other libs seem fine. > > Ik locks up a long time at > > > > ==13832== Reading syms from /lib/libc-2.2.4.so (0xB1027000) > > <messages about redirection> > > ==13832== Reading syms from /lib/libc-2.2.4.so (0x1B915000) > > > > bit eventually does finish. I'll see if I can bump the libc version to > > 2.2.5 and see if that makes a difference. It this bug-file worthy material > > ? > > It's probably worth filing a bug to get it on the record. I'll file on. Igmar |