The first execution of the crash built-in command "ps -r" heavily consumes memory and time.

Issue

• The first execution of the crash built-in command ps -r heavily consumes memory and time.

# echo "exit" | time -v crash -s
        Command being timed: "crash -s"
        User time (seconds): 24.55
        System time (seconds): 0.73
        Percent of CPU this job got: 100%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:25.16
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 410240
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 40395
        Voluntary context switches: 546
        Involuntary context switches: 31
        Swaps: 0
        File system inputs: 0
        File system outputs: 280
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0

# echo "ps -r" | time -v crash -s
----------8<----------8<----------8<---
Command exited with non-zero status 1
        Command being timed: "crash -s"
        User time (seconds): 48.66                             <<<---
        System time (seconds): 2.03
        Percent of CPU this job got: 99%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:50.92   <<<---
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 1839252            <<<---
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 416190
        Voluntary context switches: 548
        Involuntary context switches: 244
        Swaps: 0
        File system inputs: 0
        File system outputs: 288
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 1