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SGI Performance Co-Pilot 1.3
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SGI Performance Co-Pilot 1.3.iso
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relnotes
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pcp
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ch5.z
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1997-04-07
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- 1 -
5. _K_n_o_w_n__P_r_o_b_l_e_m_s__a_n_d__W_o_r_k_a_r_o_u_n_d_s
+o The eeeennnnvvvviiiioooonnnn PMDA for Challenge/Onyx systems has not yet
been ported to the ORIGIN product range.
+o The original intent was to support seamless VCR-replay
between a current ``live'' source and a recently
created archive source. See ppppmmmmSSSSeeeettttMMMMooooddddeeee(3) and
ppppmmmmvvvvccccrrrr(1)).
In practice, the semantic and operational difficulties
associated with transitions between ``live'' and
``archive'' modes are so significant that the feature
has never been fully implemented, and is likely to be
withdrawn from future PCP releases.
The services provided by ppppmmmmvvvvccccrrrr(1) are not used by any
PCP utility or tool.
+o Performance metrics are not reported for SCSI LUNs that
were inactive at the time the Performance Metrics
Collector Daemon ppppmmmmccccdddd(1) was started. The ppppmmmmccccdddd
initialization procedure cannot identify inactive SCSI
LUNs, as found on RAID devices, that may later become
active, in fail-over situations for example. When run
as rrrrooooooootttt, the following will restart ppppmmmmccccdddd and include
the newly active devices:
# /etc/init.d/pcp start
+o When using PCP tools with archives and the PCP Archive
Time Control panel (or ppppmmmmttttiiiimmmmeeee(1)), the Archive Time
Bounds dialog exposed from the _B_o_u_n_d_s... option of the
OOOOppppttttiiiioooonnnnssss menu contains Start and Finish times that are
not editable. The time limits are equal to the extrema
of the start and finish times for all archives
currently opened by tools using the shared PCP Archive
Time Control panel, and cannot be edited.
+o Many PCP tools support command line options (----SSSS, ----TTTT, ----OOOO
and ----AAAA) to define a ``time window'' of interest. This
concept is well defined and fully supported when the
source of the performance metrics is an archive. For
real-time sources, the time window specification may be
parsed, but silently ignored, by some tools.
+o There is no SGIHelp for ppppmmmmrrrruuuulllleeeessss(1). Refer to the
reference page, and the _P_C_P _U_s_e_r'_s _a_n_d _A_d_m_i_n_i_s_t_r_a_t_o_r'_s
_G_u_i_d_e.
- 2 -
+o The following incidents remain open.
456692 folios generated from pmview do not observe
default host semantics
459902 pmgadgets (and maybe others) go into a loop
when the clock goes backwards
464038 webmeter license prevents loading of ascii
namespace
465662 pmsocks pmkstat fails on platforms running 64-
bit or n32-bit IRIX
There is a workaround, use ----hhhh llllooooccccaaaallllhhhhoooosssstttt as
arguments to ppppmmmmkkkkssssttttaaaatttt(1).
475130 libpcp_socks.so for 6.4 does not work
More precisely, ppppmmmmssssoooocccckkkkssss(1) will only work for
o32 applications. This will be fixed in PCP
2.0.