uClinux 2.6.14 snapshots

hippo, here is what I am seeing - I am doing a simple test where I copy a large file (35M Linux BZ2 kernel) from one MMC partition to another.

In 2.6.12, I can telnet in about 3 different sessions before it crashes.

In 2.6.14, I can maybe get only 2 sessions.

In 2.6.15, it will bomb as soon as I do anything else. If I have a UART session open, and a telnet session open executing the 'cp' command, and do something like cat /proc/meminfo while the copy is taking place, it gets page allocation failures.

So I'm not sure if this is a bug, not enough RAM, or the kernels are getting worse at handling small amounts of RAM. I am going to try and define a more conclusive test, but that's teh current status.

I tried this on 2.6.11 as well, and it fails with about 2 telnet sessions as well.

When I check /proc/meminfo, most of it is in 'cached' - I guess because it's doing a large IO transfer. Does this seem normal?

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originally posted by jdhar@Apr 15 2006, 12:30 AM

i tried this on 2.6.11 as well, and it fails with about 2 telnet sessions as well.

when i check /proc/meminfo, most of it is in 'cached' - i guess because it's doing a large io transfer. does this seem normal?

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It is strange.

Maybe you can try add a "sync" command to flush write cache before next session.

Or use CF drive as a cross check.

I can verify J&#39;s 2.6.14 snapshot.

The NIOS serial driver is OK.

Unfortunately I couldn&#39;t test the LAN91C111 ethernet, since the relevant menuconfig option seems to have disappeared. Any idea what I&#39;m doing wrong?