vmtouch
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hoytech
Portable file system cache diagnostics and control
I wonder if using madvise() sycall (where supported) might be beneficial, especially with the `MADV_WILLNEED` flag to trigger read-ahead/prefetch.
It is hard to distinguish o and O in loading progress: if (j == pages_per_char) { if (curr == pages_per_char) fprintf(out, "O"); else if (curr == 0) fprintf(out, " ");...
Hello! Thank you for this lovely tool. Just spotted this behaviour that does not seem to be desired. Here's my situation, a Linux server with two mounts: `/` and `/var/www/virtualmin`:...
I noticed that this warning occurs when building vmtouch 1.3.1 with llvm.org clang 12, 13, 14, 15, 16, 17: ``` vmtouch.c:318:13: warning: implicit conversion from 'long long' to 'double' changes...
Add the ability to specify a range of bytes which should be mapped to cache first e.g. `vmtouch -s 512-1MB -l file`. And also add the ability to limit the...
Hi, I use vmtouch to detect /usr/bin, It showed very large cache, but the free command did not have much. > ./vmtouch /usr/bin/ > vmtouch: WARNING: not following symbolic link...
How to debug the error of 'vmtouch: FATAL: daemon shut down unexpectedly'? The command is `vmtouch -f -w -t -l -d -m 500G /path/to/a/448G/file`.
Running `numactl --cpubind=0 --membind=0 -- vmtouch -ldw targetfile` shows locked memory over all available NUMA nodes. Expected behavior would be for all the memory to be membound to NUMA node0....
I'm using vmtouch together with an apache2.4 server in a container. The server reads only static files from an NFS share. It happens quite too often that vmtouch simply stops....
Hi, after rebooting a server vmtouch (v1.3.1) now suddenly (probably forgot to reboot after updating) fails to lock more than 1G. Even with ulimits increased an arbitrary high `-m` parameters...
